AnatomyOrganismsDiseasesChemicals and DrugsAnalytical, Diagnostic and Therapeutic Techniques and EquipmentHealth Care
Chromatography, Micellar Electrokinetic CapillaryCnidiumBiogenic AminesBoratesPhenylethylmalonamideElectrophoresis, CapillaryCapillariesPoison Control CentersPoisoningEthylene GlycolEthylene GlycolsEthylenesAntidotesDermatologic Agents
Chromatography, Micellar Electrokinetic Capillary
A hybrid separation technique combining both chromatographic and electrophoretic separation principles. While the method was invented to separate neutral species, it can also be applied to charged molecules such as small peptides.
Cnidium
A plant genus of the family APIACEAE. Members contain osthol.
Biogenic Amines
A group of naturally occurring amines derived by enzymatic decarboxylation of the natural amino acids. Many have powerful physiological effects (e.g., histamine, serotonin, epinephrine, tyramine). Those derived from aromatic amino acids, and also their synthetic analogs (e.g., amphetamine), are of use in pharmacology.
Borates
Inorganic or organic salts and esters of boric acid.
Phenylethylmalonamide
A metabolite of primidone.
Electrophoresis, Capillary
A highly-sensitive (in the picomolar range, which is 10,000-fold more sensitive than conventional electrophoresis) and efficient technique that allows separation of PROTEINS; NUCLEIC ACIDS; and CARBOHYDRATES. (Segen, Dictionary of Modern Medicine, 1992)
Capillaries
The minute vessels that connect the arterioles and venules.
Poison Control Centers
Facilities which provide information concerning poisons and treatment of poisoning in emergencies.
Poisoning
A condition or physical state produced by the ingestion, injection, inhalation of or exposure to a deleterious agent.
Ethylene Glycol
A colorless, odorless, viscous dihydroxy alcohol. It has a sweet taste, but is poisonous if ingested. Ethylene glycol is the most important glycol commercially available and is manufactured on a large scale in the United States. It is used as an antifreeze and coolant, in hydraulic fluids, and in the manufacture of low-freezing dynamites and resins.
Ethylene Glycols
An ethylene compound with two hydroxy groups (-OH) located on adjacent carbons. They are viscous and colorless liquids. Some are used as anesthetics or hypnotics. However, the class is best known for their use as a coolant or antifreeze.
Ethylenes
Derivatives of ethylene, a simple organic gas of biological origin with many industrial and biological use.
Antidotes
Agents counteracting or neutralizing the action of POISONS.
Dermatologic Agents
Drugs used to treat or prevent skin disorders or for the routine care of skin.

Separation of urea, uric acid, creatine, and creatinine by micellar electrokinetic capillary chromatography with sodium cholate. (1/66)

The capillary electrophoretic separation of the four nonprotein nitrogenous compounds (NPNs; urea, uric acid, creatine, and creatinine) typically employed in clinical and medical settings for the monitoring of renal function is described. Successful resolution of these compounds is achieved with the use of a bile salt micelle system composed of sodium cholate at phosphate buffer pH 7.4. The elution patterns of four NPNs are obtained within 30 min with a voltage of 30 kV. The effect of varying the applied voltage, temperature, and the mole ratio of phosphate buffer with bile salt surfactant on the migration behavior is also examined.  (+info)

Quantification of riboflavin, flavin mononucleotide, and flavin adenine dinucleotide in human plasma by capillary electrophoresis and laser-induced fluorescence detection. (2/66)

BACKGROUND: Riboflavin is the precursor of flavin mononucleotide (FMN) and FAD, which serve as cofactors for several redox enzymes. We have developed a capillary electrophoresis method for the determination of riboflavin and its two coenzyme forms in human plasma. METHODS: Trichloroacetic acid-treated plasma was subjected to solid-phase extraction on reversed-phase columns. The analytes were separated by micellar electrokinetic capillary chromatography in uncoated fused- silica capillaries filled with borate buffer containing 50 mmol/L sodium dodecyl sulfate, methanol, and N-methylformamide. Native fluorescence was monitored at 530 nm, using an argon laser operating at 488 nm as excitation source. RESULTS: The assay was linear over a concentration range of two orders of magnitude, and the limit of detection was far below physiological concentrations for all vitamers. The within-day and between-day coefficients of variation were 4-9% and 6-12%, respectively. The reference values (median, 5-95 percentiles) obtained by analyzing plasma from 63 healthy subjects were 8.6 nmol/L (2.7-42.5 nmol/L) for riboflavin, 7.0 nmol/L (3.5-13.3 nmol/L) for FMN, and 57.9 nmol/L (44.5-78.1 nmol/L) for FAD. CONCLUSIONS: Capillary electrophoresis with laser-induced fluorescence detection allows determination of all riboflavin vitamers far below physiological concentrations. The method may become a useful tool for the assessment of riboflavin status in humans.  (+info)

Simultaneous determination of sweeteners and preservatives in preserved fruits by micellar electrokinetic capillary chromatography. (3/66)

A micellar electrokinetic capillary method for the simultaneous determination of the sweeteners dulcin, aspartame, saccharin, and acesulfame-K and the preservatives sorbic acid; benzoic acid; sodium dehydroacetate; and methyl-, ethyl-, propyl-, isopropyl-, butyl-, and isobutyl-p-hydroxybenzoate in preserved fruits is developed. These additives are ion-paired and extracted using sonication followed by solid-phase extraction from the sample. Separation is achieved using a 57-cm fused-silica capillary with a buffer comprised of 0.05 M sodium deoxycholate, 0.02 M borate-phosphate buffer (pH 8.6), and 5% acetonitrile, and the wavelength for detection is 214 nm. The average recovery rate for all sweeteners and preservatives is approximately 90% with good reproducibility, and the detection limits range from 10 to 25 microg/g. Fifty preserved fruit samples are analyzed for the content of sweeteners and preservatives. The sweeteners found in 28 samples was aspartame (0.17-11.59 g/kg) or saccharin (0.09-5.64 g/kg). Benzoic acid (0.02-1.72 g/kg) and sorbic acid (0.27-1.15 g/kg) were found as preservatives in 29 samples.  (+info)

Analysis of human ouabainlike compound by micellar electrokinetic chromatography. (4/66)

In this preliminary study we have optimised micellar electrokinetic chromatography (MEKC, a form of capillary electrophoresis) to enable the chromatographic and spectral characteristics of human ouabainlike compound (OLC) to be investigated. Sera from fifty patients were combined to form a pool (100 ml) whilst urine (92.5 ml) was obtained from a normal healthy volunteer. Both samples were initially concentrated and partially purified by solid phase extraction before further purification by sequential HPLC separations. Final volumes for both extracts were 100 microl. MEKC was performed on a HP(3D) CE instrument with voltage set at 20 KV, capillary temperature at 20 degrees C, injection time 4 s, sample volume 10 nl, with detection by photodiode array. A compound was found in both serum and urine that had similar elution and spectral characteristics to authentic ouabain. We conclude that MEKC is potentially a useful tool for the analysis of human OLC.  (+info)

Correlation of the capacity factor in vesicular electrokinetic chromatography with the octanol:water partition coefficient for charged and neutral analytes. (5/66)

PURPOSE: The aim of this study was to develop a method based upon electrokinetic chromatography (EKC) using oppositely charged surfactant vesicles as a buffer modifier to estimate hydrophobicity (log P) for a range of neutral and charged compounds. METHODS: Vesicles were formed from cetyltrimethylammonium bromide (CTAB) and sodium n-octyl sulfate (SOS). The size and polydispersity of the vesicles were characterized by electron microscopy, dynamic light scattering, and pulsed-field gradient NMR (PFG-NMR). PFG-NMR was also used to determine if ion-pairing between cationic analytes and free SOS monomer occurred. The CTAB/SOS vesicles were used as a buffer modifier in capillary electrophoresis (CE). The capacity factor (log k') was calculated by determining the mobility of the analytes both in the presence and absence of vesicles. Log k' was determined for 29 neutral and charged analytes. RESULTS; There was a linear relationship between the log of capacity factor (log k') and octanol/water partition coefficient (log P) for both neutral and basic species at pH 6.0, 7.3, and 10.2. This indicated that interaction between the cation and vesicle was dominated by hydrophobic forces. At pH 4.3, the log k' values for the least hydrophobic basic analytes were higher than expected, indicating that electrostatic attraction as well as hydrophobic forces contributed to the overall interaction between the cation and vesicle. Anionic compounds could not be evaluated using this system. CONCLUSION: Vesicular electrokinetic chromatography (VEKC) using surfactant vesicles as buffer modifiers is a promising method for the estimation of hydrophobicity.  (+info)

Separation of sympathomimetic amines of abuse and related compounds by micellar electrokinetic chromatography. (6/66)

Separation of twelve sympathomimetic amines and related compounds by micellar electrokinetic chromatography (MEKC) with UV absorbance detection is described. These amines were well separated within 25 min using 50 mM sodium tetraborate solution containing 15 mM sodium dodecylsulfate (SDS) of pH 9.3 as a running solution and detected at 210 nm. MEKC was performed with an applied voltage of 13 kV at 25 degrees C using a fused-silica capillary (50 cm x 75 mm i.d.) with effective length of 37.5 cm. The detection limits of these compounds were in the range from 4 to 97 fmol/injection at a signal-to-noise ratio (S/N) of 3. The reproducibility of the method expressed as relative standard deviation (RSD) for within-day (n=6) and between-day (n=5) assays was less than 4.8 and 8.8%, respectively. The proposed method could be applied to the determination of an anorectic drug, phentermine, in Chinese tea with a detection limit of 99 microg/g (105 fmol/injection, S/N=3).  (+info)

Evaluation of variation of acteoside and three major flavonoids in wild and cultivated Scutellaria baicalensis roots by micellar electrokinetic chromatography. (7/66)

Micellar electrokinetic chromatography (MEKC) conditions were developed to analyze the constituents of Scutellariae Radix (SR) and Scutellaria baicalensis roots. Using the MEKC method, the major flavonoid constituents of baicalin, baicalein and wogonin of wild and cultivated S. baicalensis roots were compared. In a preliminary comparison of electropherogram, one special peak was found in a wild sample but not in a 2-year-cultivated one. The compound corresponding to the peak was isolated and identified as a phenylethanoid glycoside, acteoside, by comparing the 1H- and 13C-NMR spectral data with that of the authentic compound. This is the first time acteoside has been isolated from the Scutellaria genus. It could only be found in SR derived from wild S. baicalensis roots and 4-year-cultivated plants, but not in plant materials cultivated for 3 years. Applying the MEKC method established in this study, rapid and simultaneous determinations of acteoside together with 3 flavonoids in samples were achieved. The method can thus be used for the quality control of SR in a shorter analysis period than HPLC.  (+info)

Analysis method of the angiotensin-I converting enzyme inhibitory activity based on micellar electrokinetic chromatography. (8/66)

A micellar electrokinetic chromatography (MEKC) method was developed for estimating the angiotensin-I converting enzyme (ACE) inhibitory activity by separating the hippuric acid liberated in the ACE reaction mixture in the presence of an inhibitor, captopril. The hippuric acid was successfully separated and detected by MEKC with a 25 mM sodium dodecyl sulfate solution in a 25 mM phosphate-50 mM borate buffer at pH 7.0; the total analysis took about 5 min. A good linear relationship was observed between the inhibitor and the peak area of hippuric acid release. No significant difference in the ACE inhibitory activity (IC50) of captopril (an antihypertensive medicine) or autolyzed-mushrooms (functional foods) was observed between the conventional method and the MEKC method. The MEKC method was found to be a useful technique for a rapid assay of the ACE inhibitory activity.  (+info)

Determination of triazine herbicides in water by micellar electrokinetic capillary chromatographyDetermination of triazine herbicides in water by micellar electrokinetic capillary chromatography
Abstract Capillary electrophoresis was applied to the analysis of a mixture of triazine herbicides of environmental interest. Micellar electrokinetic capillary chromatography (MECC) proved to be satisfactory for the separation of triazines, providing high efficiency in short analysis times. Several...
http://www.ndsl.kr/ndsl/search/detail/article/articleSearchResultDetail.do?cn=NART00104849
Micellar electrokinetic capillary chromatography of vitamin B6 with electrochemical detection | ScholarBank@NUSMicellar electrokinetic capillary chromatography of vitamin B6 with electrochemical detection | [email protected]
A system for interfacing electrochemical detection with micellar electrokinetic capillary chromatography is demonstrated. This system couples the separation column to a short length of the same column material together with a section of porous graphite tubing which forms an electrically conductive joint. The joint is immersed in a buffer reservoir together with the ground electrode of the high-power source (15 kV). The reservoir is electrically insulated from the electrochemical cell containing the carbon fibre detector. This configuration effectively separates the detector from the high separation potential applied. Amperometric detection with micellar solutions is demonstrated for a mixture of B6 vitamers on a 50 μm I.D. column. A detection limit of ca. 4 fmol is obtained. The linear dynamic range of the calibration plot is slightly over two orders of magnitude (from ca. 1 to 200 ppm). © 1991 ...
http://scholarbank.nus.edu.sg/handle/10635/94223
Micellar electrokinetic chromatography - WikipediaMicellar electrokinetic chromatography - Wikipedia
Micellar electrokinetic chromatography (MEKC), is a chromatography technique, used in analytical chemistry. It is a modification of capillary electrophoresis (CE), where the samples are separated by differential partitioning between micelles (pseudo-stationary phase) and a surrounding aqueous buffer solution (mobile phase). The basic set-up and detection methods used for MEKC are the same as those used in CE. The difference is that the solution contains a surfactant at a concentration that is greater than the critical micelle concentration (CMC). Above this concentration, surfactant monomers are in equilibrium with micelles. In most applications, MEKC is performed in open capillaries under alkaline conditions to generate a strong electroosmotic flow. Sodium dodecyl sulfate (SDS) is the most commonly used surfactant in MEKC applications. The anionic character of the sulfate groups of SDS cause the surfactant and micelles to have electrophoretic mobility that is counter to the direction of the ...
https://en.wikipedia.org/wiki/Micellar_electrokinetic_chromatography
Tuning Polymeric Chiral Surfactants for Enhanced Enantiomeric Recognition in Micellar Electrokinetic Chromatography - OpenThesis
The research presented in this dissertation involves the synthesis, modification, characterization, and the application of polymeric surfactants in micellar electrokinetic chromatography (MEKC). Sodium undecenoyl-L-Leucinate (L-SUL) was synthesized and modified by use of alkali metal counterions, alcohols, and Triton X-102. Characterization of the modified poly-L-SUL was performed in order to elucidate the structural changes on the surfactants by use of four techniques. While surface tensiometry was used for the determination of the critical micelle concentration (cmc), fluorescence measurements were used for the determination of the polarity of the modified polymeric surfactants. The information about the size of the polymeric surfactants was obtained by use of pulsed field gradient-NMR (PFG-NMR). A superior chromatographic performance in MEKC was demonstrated by the modified polymeric surfactants as compared to the non-modified polymeric surfactants. A correlation between the polarity and the ...
http://www.openthesis.org/documents/Tuning-Polymeric-Chiral-Surfactants-Enhanced-525918.html
Chiral separation of vinpocetine using cyclodextrin-modified micellar electrokinetic chromatography - Universiti Teknologi...Chiral separation of vinpocetine using cyclodextrin-modified micellar electrokinetic chromatography - Universiti Teknologi...
A cyclodextrin-modified micellar electrokinetic chromatography (CD-MEKC) technique has been developed for enantioseparation of vinpocetine using an inexpensive 2-hydroxypropyl-β-CD (HP-β-CD) as the chiral selector (CS). The best chiral separation was achieved using 40 mM HP-β-CD as the CS in 50 mM phosphate buffer (pH 7.0) consisting of 40 mM sodium dodecyl sulfate (SDS) at a separation temperature and separation voltage of 25°C and 25 kV, respectively. To the authors best knowledge, this is the first CD-MEKC study able to successfully separate the four stereoisomer of vinpocetine in separation time of 9.5 min and resolution of 1.04-3.87. Chirality, 2012. © 2012 Wiley Periodicals, Inc. ...
http://eprints.utm.my/23019/
Capillary zone electrophoresis and micellar electrokinetic chromatography, with taurodeoxycholate as micellar agent, of protein...Capillary zone electrophoresis and micellar electrokinetic chromatography, with taurodeoxycholate as micellar agent, of protein...
Capillary zone electrophoresis and micellar electrokinetic chromatography, with taurodeoxycholate as micellar agent, of protein kinase A peptide substrates ...
http://uu.diva-portal.org/smash/record.jsf?pid=diva2:79134
Separation of cytokinin isomers with a partial filling-micellar electrokinetic chromatography-mass spectrometry approach |...Separation of cytokinin isomers with a partial filling-micellar electrokinetic chromatography-mass spectrometry approach |...
Ge, L., Tan, S.N., Yong, J.W.H., Hua, L., Ong, E.S. (2008). Separation of cytokinin isomers with a partial filling-micellar electrokinetic chromatography-mass spectrometry approach. Electrophoresis 29 (10) : 2024-2032. [email protected] Repository. https://doi.org/10.1002/elps. ...
http://scholarbank.nus.edu.sg/handle/10635/24431
Determination of catechins in matcha green tea by micellar electrokinetic chromatographyDetermination of catechins in matcha green tea by micellar electrokinetic chromatography
Catechins in green tea are known to have many beneficial health properties. Recently, it has been suggested that matcha has greater potential health benefits than other green teas. Matcha is a special powdered green tea used in the Japanese tea ceremony. However, there has been no investigation to q …
https://pubmed.ncbi.nlm.nih.gov/14518774/
Determination of Total Apigenin in Herbs by Micellar Electrokinetic Chromatography with UV DetectionDetermination of Total Apigenin in Herbs by Micellar Electrokinetic Chromatography with UV Detection
Journal of Analytical Methods in Chemistry is a peer-reviewed, Open Access journal that publishes original research articles as well as review articles reporting methods and instrumentation in chemical analysis, and their application to real-world problems.
https://www.hindawi.com/journals/jamc/2016/3827832/abs/
Application of dispersive liquid-liquid microextraction combined with sweeping micellar electrokinetic chromatography for trace...Application of dispersive liquid-liquid microextraction combined with sweeping micellar electrokinetic chromatography for trace...
A free platform for explaining your research in plain language, and managing how you communicate around it - so you can understand how best to increase its impact.
https://www.growkudos.com/publications/10.1039%25252Fb9ay00115h/reader
Advances in the use of cyclodextrins as chiral selectors in capillary electrokinetic chromatography: fundamentals and...Advances in the use of cyclodextrins as chiral selectors in capillary electrokinetic chromatography: fundamentals and...
Capillary electrokinetic chromatography is generally recognized as a versatile and robust capillary electromigration technique for the separation of enantiomers. In this mode, one or more chiral selectors are added to the background electrolyte acting as pseudostationary phases. Within the various chiral selectors that have been applied to enantioseparations in capillary electrokinetic chromatography, cyclodextrins are by far the most often used selectors because of their versatility, structural variety and commercial availability. This is reflected in the large number of applications of cyclodextrins to analytical enantioseparations that have been reported between January 2012 and July 2016, the period of time covered by this review. Many of these applications cover aspects of life sciences such as drug analysis, bioanalysis or food analysis. Despite the large number of commercially available cyclodextrins, new derivatives have been developed in order to achieve altered enantioselectivities or ...
https://soar.wichita.edu/handle/10057/12788
Tailoring the separation selectivity of metal complexes and organometallic compounds resolved by capillary electrophoresis...Tailoring the separation selectivity of metal complexes and organometallic compounds resolved by capillary electrophoresis...
The use of auxiliary separation mechanisms to manipulate the separation selectivity of metal complexes and organometallic species is reviewed. Auxiliary separation mechanisms included in the review are micellar electrokinetic capillary chromatography, ion-pairing and ion-exchange electrokinetic chromatography. This paper discusses how these secondary mechanisms can be effectively employed to tailor separation selectivity.. ...
https://eprints.utas.edu.au/7756/
A critical evaluation of the application of capillary electrophoresis to the detection and determination of 1,4-benzodiazepine...
Studies of the capillary zone electrophoresis (CZE) and micellar electrokinetic capillary chromatography (MEKC) behaviour of 1,4-benzodiazepines have seen application in subject areas such as the development of pharmaceuticals, therapeutic drug monitoring and forensic toxicology. In the development of pharmaceuticals, pK(a) determinations by CZE can be used in preclinical studies whereas analytical data on the detection and determination of 1,4-benzodiazepines is of value primarily in raw material/formulation assay and in the analysis of body fluids in clinical studies. The capillary electrophoresis (CE) techniques, which generally have inferior limits of detection (LOD) to rival techniques such as gas chromatography (GC) and high-performance liquid chromatography (HPLC), are particularly applicable in forensic toxicology where reasonably high concentrations of these drugs can be encountered. It is anticipated that, with the interfacing of CZE: and capillary electrochromatography (CEC) with mass ...
http://uir.ulster.ac.uk/1107/
COMPARISON OF DIFFERENT TECHNIQUES FOR THE ANALYSIS OF METALLOTHIONEIN ISOFORMS BY CAPILLARY ELECTROPHORESIS<...COMPARISON OF DIFFERENT TECHNIQUES FOR THE ANALYSIS OF METALLOTHIONEIN ISOFORMS BY CAPILLARY ELECTROPHORESIS<...
TY - JOUR. T1 - COMPARISON OF DIFFERENT TECHNIQUES FOR THE ANALYSIS OF METALLOTHIONEIN ISOFORMS BY CAPILLARY ELECTROPHORESIS. AU - RICHARDS, M P AU - BEATTIE, J H PY - 1995/7/7. Y1 - 1995/7/7. N2 - We have investigated free-solution capillary electrophoresis (FSCE) and micellar electrokinetic capillary chromatography (MECC) separations of metallothionein (MT) isoforms conducted in uncoated and surface-modified fused-silica capillaries. At alkaline pH, FSCE rapidly resolves isoforms belonging to the MT-1 and MT-2 charge classes. At acidic pH, additional resolution of MT isoforms is achieved. The use of high-ionic-strength (0.5 M) phosphate buffers can result in high peak efficiencies and increased resolution for some MT isoforms. Interior capillary surface coatings such as polyamine and linear polyacrylamide polymers permit separation of MT isoforms with enhanced resolution through their effects on electroosmotic flow (EOF) and protein-wall interactions. Improvements in MT isoform resolution can ...
https://abdn.pure.elsevier.com/en/publications/comparison-of-different-techniques-for-the-analysis-of-metallothi
Capillary Electrophoresis in the Early Twenty-First Century: New Trends and Relevant Applications - Nova Science PublishersCapillary Electrophoresis in the Early Twenty-First Century: New Trends and Relevant Applications - Nova Science Publishers
Capillary electrophoresis (CE) comprises a family of related separation techniques in which an electric field is used to achieve the separation of components in a mixture. One of the key features of CE is the simplicity of the instrumentation required, and today, these techniques have become powerful analytical tools for high efficiency separation, and the identification of a variety of ionic and neutral compounds.. Moreover, the versatility of CE operational modes (capillary zone electrophoresis, micellar electrokinetic capillary chromatography, capillary electrochromatography, capillary isoelectric focusing, isotachophoresis, non-aqueous capillary electrophoresis, etc.) and detection systems (ultraviolet, fluorescence, amperometric, mass spectrometry…) make CE useful for applications in many fields such as environmental, food, pharmaceutical, and forensic analysis. The typcial drawback of CE techniques, based on their low sensitivity when dealing with conventional UV-detection, due to their ...
https://novapublishers.com/shop/capillary-electrophoresis-in-the-early-twenty-first-century-new-trends-and-relevant-applications/
Fast investigations from biological matrices using CE - Test of a blood-brain barrier model - Kühne - 2012 - ELECTROPHORESIS -...Fast investigations from biological matrices using CE - Test of a blood-brain barrier model - Kühne - 2012 - ELECTROPHORESIS -...
In order to adopt a general workflow for complex biological matrices with respect to a new blood-brain barrier (BBB) model, a micellar electrokinetic chromatography method has been developed. The cells forming the BBB have been cultivated in a special cell growth medium in which six drugs (acetaminophen, caffeine, carbamazepine, cimetidine, indometacin and propranolol) have been dissolved and tested for their penetration properties. The results showed good to very good accordance to the reference values. Samples were directly injected onto the capillary without any pretreatment (fused silica capillary, id: 50 μm, L: 48 cm, l: 40 cm). After method development, separations were carried out using a 60 mM borate buffer containing 200 mM of SDS at 30 kV, leading to an analysis time of less than 10 min. Between two runs the capillary was rinsed with a mixture of equal parts of running buffer and isopropanol (70% v/v), which proved to be very effective to remove matrix compounds. An appropriate choice ...
http://onlinelibrary.wiley.com/doi/10.1002/elps.201100282/full
Application of capillary electrophoresis to the simultaneous determination and stability study of four extensively used...Application of capillary electrophoresis to the simultaneous determination and stability study of four extensively used...
SIMON, Brigitta; HANCU, Gabriel and GYERESI, Árpád. Application of capillary electrophoresis to the simultaneous determination and stability study of four extensively used penicillin derivatives. Braz. J. Pharm. Sci. [online]. 2014, vol.50, n.3, pp.521-527. ISSN 1984-8250. http://dx.doi.org/10.1590/S1984-82502014000300010.. The applicability of capillary electrophoresis for the analysis of four extensively used penicillin derivatives (benzylpenicillin, ampicillin, amoxicillin, oxacilllin) has been studied. Because of structural similarities, the electrophoretic behavior of these derivatives is very similar; consequently an efficient separation using the conventional capillary zone electrophoresis is hard to be achieved. Their simultaneous separation was solved by using micellar electrokinetic capillary chromatography, the separation being based on the differential partition of the analytes between the micellar and aqueous phase. Using a buffer solution containing 25 mM sodium tetraborate and ...
http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1984-82502014000300521&lng=en&nrm=iso&tlng=en
Chinese Journal of Chromatography
Abstract A method for the determination of histamine, 2-phenylethylamine, tryptamine, putrescine, cadaverine, spermidine and spermine in fish using micellar electrokinetic capillary chromatography (MECC) was developed. Seven biogenic amines (BAs) were extracted from a sample with 6% perchloric acid, then derivatized with benzoyl chloride. 0.02 mol/L borate buffer (pH 9.2) containing 0.06 mol/L sodium deoxycholate-methanol （95∶5, v/v）was used as a running buffer. The detection wavelength was set at 214 nm. The separation was achieved within 12 min. Good linearities were observed from the calibration plots in the concentration ranges. The detection limit of histamine was 15 μg/g and those of the other amines were 5 μg/g. The developed method was successfully employed for the simultaneous determination of 7 BAs in fish sample with satisfactory results. ...
http://www.chrom-china.com/EN/abstract/abstract10269.shtml
Simultaneous Determination of Catecholamines and Polyamines in PC-12 C by Guanshu Liu, Junnan Chen et al.Simultaneous Determination of Catecholamines and Polyamines in PC-12 C by Guanshu Liu, Junnan Chen et al.
A method for simultaneous determination of polyamines and catecholamines in cell extracts by micellar electrokinetic capillary chromatography with UV detection at 254 nm was established at the first time. The polyamines (putrescine, spermidine and spermine) and catecholamines (dopamine, serotonin, norepinephrine and epinephrine) were extracted from PC-12 cells and were derivatized with 6-aminoquinolyl-N-hydroxysuccinimidyl carbamate. Different derivatization conditions such as temperature, ratio of derivatization reagents and incubation time were investigated to find the best reaction condition which gave the highest detection sensitivity for polyamines and catecholamines. The influence of running buffer and additives on the separation such as pH, sodium dodecyl sulfate (SDS) concentrations and various additives was also investigated. Separation was achieved within 20 min with good repeatability in a 100 mM boric acid buffer containing 10 mM SDS and 10 mM 18-crown-6 at a pH of 9.5. The detection limit
https://scholarsmine.mst.edu/chem_facwork/20/
The chemical interpretation and practice of linear solvation energy relationships in chromatography<...The chemical interpretation and practice of linear solvation energy relationships in chromatography<...
TY - JOUR. T1 - The chemical interpretation and practice of linear solvation energy relationships in chromatography. AU - Vitha, Mark. AU - Carr, Peter W.. PY - 2006/9/8. Y1 - 2006/9/8. N2 - This review focuses on the use of linear solvation energy relationships (LSERs) to understand the types and relative strength of the chemical interactions that control retention and selectivity in the various modes of chromatography ranging from gas chromatography to reversed phase and micellar electrokinetic capillary chromatography. The most recent, widely accepted symbolic representation of the LSER model, as proposed by Abraham, is given by the equationSP = c + e E + s S + a A + b B + v Vin which, SP can be any free energy related property. In chromatography, SP is most often taken as log k′ where k′ is the retention factor. The letters E, S, A, B, and V denote solute dependent input parameters that come from scales related to a solutes polarizability, dipolarity (with some contribution from ...
https://experts.umn.edu/en/publications/the-chemical-interpretation-and-practice-of-linear-solvation-ener
Highly sensitive chiral analysis in capillary electrophoresis with large-volume sample stacking with an electroosmotic flow...Highly sensitive chiral analysis in capillary electrophoresis with large-volume sample stacking with an electroosmotic flow...
Mentioning: 32 - To improve the sensitivity in chiral analysis by capillary electrophoresis without loss of optical resolution, application of large-volume sample stacking with an electroosmotic flow pump (LVSEP) was investigated. Effects of the addition of cyclodextrin (CD) into a running solution on the LVSEP preconcentration was theoretically studied, where the preconcentration efficiency and effective separation length would be slightly increased if the effective electrophoretic velocity (v(ep,eff,BGS)) of the analytes was decreased by interacting with CD. In LVSEP-CD-modified capillary zone electrophoresis (CDCZE) and LVSEP-CD electrokinetic chromatography with reduced v(ep,eff,BGS), up to 1000-fold sensitivity increases were achieved with almost no loss of resolution. In LVSEP-CD-modified micellar electrokinetic chromatography of amino acids with increased v(ep,eff,BGS), a 1300-fold sensitivity increase was achieved without much loss of resolution, indicating the versatile applicability of LVSEP
https://scite.ai/reports/highly-sensitive-chiral-analysis-in-64aVNr
Acyclovir 500 Inj - Metformin bivirkninger diarre
Rapid determination of acyclovir in plasma and cerebrospinal fluid by micellar electrokinetic chromatography with direct sample injection. 500 mg acyclovir.Commande En Ligne Valtrex (valacyclovir) 500 Mg and Pharmacie de garde Zovirax (Acyclovir) 200 mg, Valtrex (Valacyclovir) 500 mg Canada, Acyclovir Acheter Sans.Star spare parts common rail diesel injection pump and pump injector, petrol injection and repair kits, diesel fuel filters and bearings, caterpillar, lucas, delphi.. I came to your La Saint Valentin à l hôtel Atrium: Hotel Arles,. Both the Dow andthe S&P_ 500 closed at all-time highs on Friday - for the secondday in a row.buy valacyclovir 500 mg And cold sores pain lower back amoxicillin allergic reaction in baby buy valacyclovir 500 mg does have shelf life. Is still available dose.Cialis in pakistan price, The cost of cialis and viagra. Purchase acyclovir online! Trazodone online purchase? Kamagra uk prices, Nexium overnight!.Stability of cidofovir in 0.9% sodium chloride and in ...
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Identification of and#400;-Caprolactam and Melamine in Polyvinyl- Pyrrolidone Powder by Double Injection Micellar...Identification of and#400;-Caprolactam and Melamine in Polyvinyl- Pyrrolidone Powder by Double Injection Micellar...
A double-injection micellar electrokinetic chromatography (DIMEKC) method for the identification of Æ - caprolactam and melamine deliberately added to povidone (polyvin..
https://www.omicsonline.org/open-access/identification-of-caprolactam-and-melamine-in-polyvinyl-pyrrolidonepowder-by-double-injection-micellar-elektrokinetic-chromatography-2153-2435-1000442.php?aid=64037
Simultaneous determination of main phenolic acids and flavonoids in tomato by micellar electrokinetic capillary electrophoresisSimultaneous determination of main phenolic acids and flavonoids in tomato by micellar electrokinetic capillary electrophoresis
A methodology for the determination of tomato phenolic acids and flavonoids has been developed combining MEKC and DAD detection. The influence on polyphenol separation of pH and background electrolyte, BGE (borax, acetonitrile, methanol and SDS concentrations), was studied and optimized using response surface methodology and weighted desirability function. Separation of polyphenols was achieved within 20 min at 15 °C using 11.3 mM borax and 11.2 mM SDS adjusted to pH 8.5 as BGE. Validation was performed using standards and tomato extracts. Recoveries ranged from 77 to 106%. Acceptable repeatabilities were obtained for peak area (%RSD ,3.1% and ,3.7%) and migration times (%RSD ,0.2% and ,1.4%) for intra- and inter-day respectively. Detection limits ranged between 0.8 and 3.8 mg kg−1. Five and seven of these polyphenols were determined in samples of tomato and related species. This methodology will be valuable tool in breeding programs, analyzing a large number of samples. [-] ...
http://repositori.uji.es/xmlui/handle/10234/166144
Contactless conductivity detection of synthetic polymers in non-aqueous size-exclusion electrokinetic chromatography - Open...Contactless conductivity detection of synthetic polymers in non-aqueous size-exclusion electrokinetic chromatography - Open...
A capacitively coupled contactless conductivity detection (CCD) system has been applied for the detection of neutral synthetic polymers in capillary size-exclusion electrokinetic chromatography (SEEC). Polystyrene standards, that were used as a model compounds, were separated on a capillary column packed with porous 10 μm silica particles with an electrokinetically driven mobile phase, and detected by CCD and UV detection simultaneously. Mass-calibration curves for polystyrene were constructed. Satisfactory results were obtained for the linearity, the run-to-run repeatability (,0.2% for the relative retention and ,4% for the peak area) and the robustness of the detector. One of the major issues in this preliminary study was to investigate the origin of the peaks observed for the polystyrene standards. The effect of the molar mass of the polystyrenes on the sensitivity was small. Therefore, the signals obtained could not be explained as the result of an increased viscosity and a decreased ...
https://eprints.utas.edu.au/7669/
Chromatography | Free Full-Text | Field-Amplified Sample Injection-Micellar Electrokinetic Chromatography for the...Chromatography | Free Full-Text | Field-Amplified Sample Injection-Micellar Electrokinetic Chromatography for the...
A field-amplified sample injection-micellar electrokinetic chromatography (FASI-MEKC) method for the determination of 14 benzophenones (BPs) in a food simulant used in migration studies of food packaging materials was developed, allowing almost baseline separation in less than 21 min. The use of a 10 mM sodium dodecyl sulfate (SDS) solution as sample matrix was mandatory to achieve FASI enhancement of the analyzed BPs. A 21- to 784-fold sensitivity enhancement was achieved with FASI-MEKC, obtaining limits of detection down to 5.1-68.4 µg/L, with acceptable run-to-run precisions (RSD values lower than 22.3%) and accuracy (relative errors lower than 21.0%). Method performance was evaluated by quantifying BPs in the food simulant spiked at 500 µg/L (bellow the established specific migration limit for BP (600 µg/L) by EU legislation). For a 95% confidence level, no statistical differences were observed between found and spiked concentrations (probability at the confidence level, p value, of 0.55),
http://www.mdpi.com/2227-9075/2/3/452/notes
Partial filling-micellar electrokinetic chromatography optimizationstudies of ibuprofen, codeine and degradation products, and...Partial filling-micellar electrokinetic chromatography optimizationstudies of ibuprofen, codeine and degradation products, and...
Partial filling-micellar electrokinetic chromatography optimizationstudies of ibuprofen, codeine and degradation products, and coupling tomass spectrometry: Part II. ...
http://uu.diva-portal.org/smash/record.jsf?pid=diva2:92934
PDF] Hyphenations of Capillary Chromatography with Mass SpectrometryPDF] Hyphenations of Capillary Chromatography with Mass Spectrometry
Download and Read online Hyphenations Of Capillary Chromatography With Mass Spectrometry, ebooks in PDF, epub, Tuebl Mobi, Kindle Book. Get FreeHyphenations Of
https://www.melbhattan.com/hyphenations-of-capillary-chromatography-with-mass-spectrometry/
A novel interface for on-line coupling of liquid capillary chromatography with matrix-assisted laser desorption/ionization...A novel interface for on-line coupling of liquid capillary chromatography with matrix-assisted laser desorption/ionization...
Zhan, Q., Gusev, A., & Hercules, D. M. (1999). A novel interface for on-line coupling of liquid capillary chromatography with matrix-assisted laser desorption/ionization detection. Rapid Communications in Mass Spectrometry, 13(22), 2278-2283 ...
https://www.rti.org/publication/novel-interface-line-coupling-liquid-capillary-chromatography-matrix-assisted-laser
Analysis of natural flavonoids by microchip-micellar electrokinetic chromatography with pulsed amperometric detection - Analyst...Analysis of natural flavonoids by microchip-micellar electrokinetic chromatography with pulsed amperometric detection - Analyst...
Catechins (catechin and other derivatives) are naturally occurring flavonoids present in a number of plants and foods. They are also part of numerous nutraceutical formulations because they are believed to have antioxidant, cancer chemo-preventative, anti-inflammatory and antimicrobial properties. The determ
https://pubs.rsc.org/en/content/articlelanding/2005/an/b418368a/unauth
Determination of caffeine and associated compounds in food, beverages, natural products, pharmaceuticals, and cosmetics by...Determination of caffeine and associated compounds in food, beverages, natural products, pharmaceuticals, and cosmetics by...
Determination of caffeine and associated compounds in food, beverages, natural products, pharmaceuticals, and cosmetics by micellar electrokinetic capillary ...
https://farfar.pharmacy.bg.ac.rs/handle/123456789/1053?show=full
Capillary Chromatography - Applications of Capillary Columns in GC Analysis 3 :: Chromatography OnlineCapillary Chromatography - Applications of Capillary Columns in GC Analysis 3 :: Chromatography Online
The arrangement of the glucose units in the three different forms of cyclodextrin are shown in figure 26. The mouth of the torus-shaped cyclodextrin molecule has a larger circumference than at the base and is linked to secondary hydroxyl groups of the C2 and C3 atoms of each glucose unit (see figure 27). The primary hydroxyl groups are located at the base of the torus on the C6 atoms. As these hydroxyl groups are free to rotate, they partially block the base aperture. The size of the cavity increases with increasing number of glucose units (figure 26).The secondary hydroxyl groups can be reacted with appropriate reagents to introduce additional and different interactive character to the cyclodextrin molecule. The strong chiral selectivity of the cyclodextrins structures is thought to arise from the many chiral centers they contain (e.g., b-cyclodextrin has 35 stereogenic centers). The cyclodextrins are probably the most effective chirally selective stationary phases presently available for the ...
http://chromatography-online.org/Applications/Chiral-Separations/rs_12_39.php
Capillary Chromatography - The Optimum Velocity and Minimum Variance per Unit Length 1 :: Chromatography OnlineCapillary Chromatography - The Optimum Velocity and Minimum Variance per Unit Length 1 :: Chromatography Online
It is clear that the column radius is the critical property of the system, significantly effecting both the column efficiency and the analysis time. It is also seen that the contribution to dispersion from longitudinal diffusion is the same for both columns and so the striking difference between the performance of the two columns depends solely on the effect of the column radius on the resistance to mass transfer terms. This is clearly illustrated by the large difference in slopes of the two linear curves for the resistance to mass transfer shown in figure 17.. ...
http://chromatography-online.org/Capillary-Column-Theory/Velocity-Variance/rs_12_26.php
Dionex CRD Bypass Cartridge HPLC Capillary | Chromatography PartsDionex CRD Bypass Cartridge HPLC Capillary | Chromatography Parts
Founded by a researcher, ChromatographyParts.com is dedicated to the goal of lowering the cost of scientific research by providing high-quality replacement parts for Gas Chromatography and HPLC systems at bargain prices.. ChromatographyParts.com is a part of ConquerScientific.com, where we offer new and used systems, as well as on-site repair and installation services for HPLC and GC systems. Get in touch with us today! ...
https://www.chromatographyparts.com/shop/dionex/ics-5000-ic/dionex-crd-bypass-cartridge-hplc-capillary/
Enrichment of Glycoproteins using Nanoscale Chelating Concanavalin A Monolithic Capillary ChromatographyEnrichment of Glycoproteins using Nanoscale Chelating Concanavalin A Monolithic Capillary Chromatography
Close The Infona portal uses cookies, i.e. strings of text saved by a browser on the users device. The portal can access those files and use them to remember the users data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser. ...
https://www.infona.pl/resource/bwmeta1.element.acs-doi-10_1021_ac900085k
Characterization and Prediction of Partition Coefficients of Uncharged Solutes into Micelles and Liposomes using Electrokinetic...Characterization and Prediction of Partition Coefficients of Uncharged Solutes into Micelles and Liposomes using Electrokinetic...
Liposome and micelle electrokinetic chromatography (EKC) were used to determine retention factors (k) that are directly related to partition coefficients (K) and the phase ratio (φ) as: k = K*φ. Linear solvation energy relationship (LSER) models were used to elucidate the contributions of solute partitioning into liposomes. In addition, an LSER model for both MEKC and LEKC was used to determine partition coefficients for solutes without observed partition coefficients. The observed partition coefficients and those determined from LSER were then used to predict partition coefficients with the group contribution approach (GCA) and the fragmental constant approach (FCA) from solute structure. In the GCA, a relatively small number of key monosubstituted aromatic and aliphatic solutes are used to determine the substituent constants of functional groups. These substituent constants as well as the contributions from aromatic and aliphatic carbon plus hydrogen are used to predict partition ...
https://repository.lib.ncsu.edu/handle/1840.16/4568
Search ResultsSearch Results
Berezkin, V.G.; Popova, T.P.; Shiryayeva, V.Ye.; Nomura, N., Gas-chromatographic separation of monoalkylphenols on polar and non-polar phases by means of capillary chromatography, Pet. Chem. USSR (Engl. Transl.), 1997, 37, 2, 161-167. 16 matching species were found. For each matching species the following will be displayed: ...
https://webbook.nist.gov/cgi/cbook.cgi?Source=1997BER%2FPOP161-167&Units=CAL&Mask=2000
fluorophores.orgfluorophores.org
Polyprotic molecular weight = 1003.19 for mass spectrometry analysis • Near-infrared (NIR) fluorescent dye • Solubility: Water or DMSO • Carboxylic acid available for covalent attachment • Supplied as polysodium salt • Used as a contrast agent by itself or for making optical probes for NIR fluorescence imaging. ...
http://fluorophores.tugraz.at/substance/1160
JKU-FoDok Forschungsdokumentation der Universit t Linz - Gehaltener Vortrag - Comparison if micellar elektrokinetic...
Comparison if micellar elektrokinetic chromatography (MEKC) and microemulsion elektrokinetic chromatography (MEEKC) for the separation of lignin degradation compounds ...
https://fodok.uni-linz.ac.at/fodok/vortrag.xsql?V_ID=897
Concrete Columns: Structural Design Overview - Structural Engineering SoftwareConcrete Columns: Structural Design Overview - Structural Engineering Software
How is the column strength affected by its slenderness?. The column slenderness is defined in terms of its slenderness ratio kLu/r, where the term kLu is called the effective length and the factor k modifies the actual column length to account for end restraints other than pinned. The value of the effective length factor k varies between 0.5 and 2.0, depending of the buckled shape of the column for different end conditions. The parameter r is the radius of gyration of the cross section.. In practice, columns are rarely found as isolated members, but they are part of rigid frames together with other structural members such as beams. When the frame is laterally braced, the joint translation is prevented by shear walls, attachment to adjoining structures, etc, and such a column is called Non-sway, as opposed to a Sway column, where the lateral stability is dependent of the stiffness of the members of the frame.. When a slender column is axially loaded, it tends to buckle, which creates a deflection ...
https://www.asdipsoft.com/concrete-columns-structural-design-overview/?replytocom=29300
Concrete Columns: Structural Design Overview - Structural Engineering SoftwareConcrete Columns: Structural Design Overview - Structural Engineering Software
How is the column strength affected by its slenderness?. The column slenderness is defined in terms of its slenderness ratio kLu/r, where the term kLu is called the effective length and the factor k modifies the actual column length to account for end restraints other than pinned. The value of the effective length factor k varies between 0.5 and 2.0, depending of the buckled shape of the column for different end conditions. The parameter r is the radius of gyration of the cross section.. In practice, columns are rarely found as isolated members, but they are part of rigid frames together with other structural members such as beams. When the frame is laterally braced, the joint translation is prevented by shear walls, attachment to adjoining structures, etc, and such a column is called Non-sway, as opposed to a Sway column, where the lateral stability is dependent of the stiffness of the members of the frame.. When a slender column is axially loaded, it tends to buckle, which creates a deflection ...
https://www.asdipsoft.com/concrete-columns-structural-design-overview/?replytocom=29302
光纖雷射鋁合金對接焊製程最佳化之研究 臺灣博碩士論文知識加值系統光纖雷射鋁合金對接焊製程最佳化之研究 臺灣博碩士論文知識加值系統
本研究係應用實驗計劃法探討光纖雷射6061T6鋁合金焊接製程最佳化，選定雷射功率(Laser Power)、加工速度(Processing Speed)、脈衝頻率(Pulse Frequency)、氣體流量(Gas Flow)為焊接之製程參數，研討對接焊的焊道表面結構、斷面與拉伸強度對於製程參數之關係。首先利用反應曲面法（Response Surface Method, RSM）之中央合成設計（Central Composite Design,CCD）規劃不同的雷射加工參數組合執行實驗；同時，本研究亦藉由光學顯微鏡觀察焊道表面結構、斷面與拉伸強度之影響，最後進行數據分析與研討。藉由變異數分析(Analysis of Variance, ANOVA)了解光纖雷射對接焊之製程參數對拉伸強度的重要影響因子，並分別應用反應曲面法(Response Surface Method, RSM)之迴歸分析(Regression Analysis)統計技術，完成建構光纖雷射對接焊的製程參數與拉伸強度之反應曲面方程式(Response Surface Equation)
https://ndltd.ncl.edu.tw/cgi-bin/gs32/gsweb.cgi/login?o=dnclcdr&s=id=%22101MHIT0489005%22.&searchmode=basic
Capillary electrophoresis - WikipediaCapillary electrophoresis - Wikipedia
Capillary electrophoresis (CE) is a family of electrokinetic separation methods performed in submillimeter diameter capillaries and in micro- and nanofluidic channels. Very often, CE refers to capillary zone electrophoresis (CZE), but other electrophoretic techniques including capillary gel electrophoresis (CGE), capillary isoelectric focusing (CIEF), capillary isotachophoresis and micellar electrokinetic chromatography (MEKC) belong also to this class of methods. In CE methods, analytes migrate through electrolyte solutions under the influence of an electric field. Analytes can be separated according to ionic mobility and/or partitioning into an alternate phase via non-covalent interactions. Additionally, analytes may be concentrated or focused by means of gradients in conductivity and pH. The instrumentation needed to perform capillary electrophoresis is relatively simple. A basic schematic of a capillary electrophoresis system is shown in figure 1. The systems main components are a sample ...
https://en.wikipedia.org/wiki/Capillary_electrophoresis
Nano Chromatography and Capillary Electrophoresis: Pharmaceutical and Environmental Analyses - Book - separationsNOW.com
Detection of drugs at low concentration is required in a variety of biological and medical situations, in order to avoid harmful side effects posed by some drug residues. The book details the instrumentation, detection, and application of nano chromatography (that is, any chromatographic and capillary electrophoretic method dealing with the detection of a sample at nano gram per liter or lower) and capillary electrophoresis in the analyses of biological and environmental samples. Methods discussed include: Nano Gas Chromatography, Nano Capillary Electrophoresis, Nano Chiral Chromatography, Micellar Electrokinetic Chromatography, Supercritical Fluid Chromatography, and Nano High Performance Liquid Chromatography.. ...
http://www.separationsnow.com/detectors/details/book/978-0-470178-51-5/Nano-Chromatography-and-Capillary-Electrophoresis-Pharmaceutical-and-Environment.html
Dr. Ahmed Mohammed Abu-Dief Mohammed - background electrolyteDr. Ahmed Mohammed Abu-Dief Mohammed - background electrolyte
Many factors can affect the natural organic matter adsorption on clay, such as pH and ionic strength. Blended background electrolyte could be causing better simulation to natural effects. Therefore, kinetic study of humic acid (HA) adsorption onto smectite has been studied under various conditions. Impact of pH and individual and blend background electrolyte with different ionic strength concentration on the ... Read more. ...
https://staffsites.sohag-univ.edu.eg/stuff/home/tags/19531/1379?p=posts
Capillary Electrochromatography | REACH
This graph shows the total number of publications written about Capillary Electrochromatography by people in this website by year, and whether Capillary Electrochromatography was a major or minor topic of these publications ...
https://reach.sickkids.ca/display/3025
Effect of cetyltrimethylammonium bromide on the migration of polyaromatic hydrocarbons in capillary electrokinetic...Effect of cetyltrimethylammonium bromide on the migration of polyaromatic hydrocarbons in capillary electrokinetic...
The separation of different ring numbered polyaromatic hydrocarbons (PAHs) was accomplished by using cetyltrimethylammonium bromide (CTAB) in capillary electrokinetic chromatography. In order to increase the solubilities and selectivities of PAHs, acetonitrile (ACN) was used as an organic modifier. Under the optimised conditions, 11 aromatic compounds were separated within 14.5 min in a running electrolyte containing 10 mM phosphate, 30 mM CTAB, and 40% ACN at pH 6.0. The effects of CTAB and ACN concentrations, voltage and pH on the resolution were investigated. Reproducibilities of migration times range between 0.55 and 1.27 R.S.D.% and peak areas between 1.02 and 7.23 R.S.D.%. Limit of detections (LODs) range between 0.09 and 2.24 mu g ml(-1). This new and fast separation method of PAHs was applied to cooked oil sample. (c) 2005 Elsevier B.V. All rights reserved. ...
https://avesis.itu.edu.tr/yayin/744f6b7d-23ba-4670-acbd-128daf4181ae/effect-of-cetyltrimethylammonium-bromide-on-the-migration-of-polyaromatic-hydrocarbons-in-capillary-electrokinetic-chromatography
Reversed phase continuous full filling CEC-ESI-MS | Lund University Diabetes CentreReversed phase continuous full filling CEC-ESI-MS | Lund University Diabetes Centre
Nanoparticles were used as a pseudostationary phase in capillary electrochromatography (CEC) electrospray ionisation-mass spectrometry (ESI-MS) for separation of both neutral analytes by a reversed phase mechanism, as well as for cationic analytes by a cation exchange mechanism. Nanoparticles suspended in electrolyte, were injected as a plug prior to the sample using a partial filling technique (PF), or used as electrolyte in a continuous full filling (CFF) technique. An orthogonal ESI probe was used to hinder the nanoparticles from entering the mass spectrometer and to allow detection of analytes co-eluting with concentrated nanoparticle slurries. Two types of nanoparticles were synthesised and used, both of them having a hydrophobic core and a hydrophilic surface. The hydrophobic core gave the nanoparticles reversed phase properties and the hydrophilic surface promoted the formation of stable slurries of nanoparticles in electrolytes with a low concentration of organic modifier. The surface of ...
https://www.ludc.lu.se/peter-spegel-associate-professor/publication/c3f69179-f6a3-4bef-9c15-4de68c9b8c01
Polyethylenimine-modified metal oxides for fabrication of packed capillary columns for capillary electrochromatography and...Polyethylenimine-modified metal oxides for fabrication of packed capillary columns for capillary electrochromatography and...
TY - JOUR. T1 - Polyethylenimine-modified metal oxides for fabrication of packed capillary columns for capillary electrochromatography and capillary liquid chromatography. AU - Wiedmer, Susanne K.. AU - DOrazio, Giovanni. AU - Smått, Jan-Henrik. AU - Bourdin, Delphine. AU - Baños-Pérez, Clara. AU - Sakeye, Motolani. AU - Kivilompolo, Maarit. AU - Kopperi, Matias. AU - Ruiz-Jiménez, José. AU - Fanali, Salvatore. AU - Riekkola, Marja-Liisa. PY - 2011. Y1 - 2011. U2 - 10.1016/j.chroma.2010.12.071. DO - 10.1016/j.chroma.2010.12.071. M3 - Artikel. VL - 1218. SP - 5020. EP - 5029. JO - Journal of Chromatography A. JF - Journal of Chromatography A. SN - 0021-9673. IS - 30. ER - ...
https://research.abo.fi/en/publications/polyethylenimine-modified-metal-oxides-for-fabrication-of-packed-
Scientific Protocols - Enantioseparation of racemic compounds in capillary electrophoresis using cationic single isomer...Scientific Protocols - Enantioseparation of racemic compounds in capillary electrophoresis using cationic single isomer...
Enantioseparation has attracted considerable attention in biological science and pharmaceutical industry because of the different physiological activity and pharmacological effects of different enantiomers (1). Amongst many analytical techniques, capillary electrophoresis (CE) is a relatively new separation technique that provides rapid analysis with high efficiency and resolution due to the use of electric field and a variety of selective modes (2). Cyclodextrins are the most commonly utilized chiral selectors added into the background electrolyte to perform enantioseparation. Besides neutral CDs derivatives, the synthesis and application of charged CDs derivatives have become attractive due to their good water solubility and excellent enantiorecognition abilities towards counter-charged racemic analytes (3,4). Previously, our group has developed a series of positive changed single isomer CD selectors which afforded good enantioseparation abilities to anionic and ampholytic acids by CE (5,6,7). ...
https://protocols.scienceexchange.com/protocols/enantioseparation-of-racemic-compounds-in-capillary-electrophoresis-using-cationic-single-isomer-cyclodextrin
中国科学院大连化学物理研究所机构知识库(DICP OpenIR): Fast analysis of capillary electrochromatography with non-porous ODS as the stationary phase
High-speed capillary electrochromatography was developed on both short and long packed columns with 2 mu m non-porous ODS as the stationary phase. Factors that affect the analysis time of samples, such as voltage, electrolyte concentration, pH and organic modifier concentration in the mobile phase, were studied systematically. Fast analysis of aromatic compounds within 13 seconds was realized with column efficiency of 573,000 plates/m and a R.S.D.% of the retention times of all components in 8 consecutive injections below 1.0%. which demonstrated the high efficiency and high reproducibility of such a technique. In addition, DNPH derived aldehydes and ketones in both standards and environmental samples were separated with high speed ...
http://cas-ir.dicp.ac.cn/handle/321008/85555
An efficient slurry packing procedure for the preparation of columns applicable in capillary electrochromatography and...An efficient slurry packing procedure for the preparation of columns applicable in capillary electrochromatography and...
article{350485, author = {Lynen, Frederic and BUICA, A and De Villiers, Andr{\e} and CROUCH, A and Sandra, Patrick}, issn = {1615-9306}, journal = {JOURNAL OF SEPARATION SCIENCE}, language = {eng}, number = {13}, pages = {1539--1549}, publisher = {WILEY-V C H VERLAG GMBH}, title = {An efficient slurry packing procedure for the preparation of columns applicable in capillary electrochromatography and capillary electrochromatography-electrospray-mass spectrometry}, volume = {28}, year = {2005 ...
https://biblio.ugent.be/publication/350485
eCite - On-Column Ion-Exchange Preconcentration of Inorganic Anions in Open Tubular Capillary Electrochromatography with...eCite - On-Column Ion-Exchange Preconcentration of Inorganic Anions in Open Tubular Capillary Electrochromatography with...
On-Column Ion-Exchange Preconcentration of Inorganic Anions in Open Tubular Capillary Electrochromatography with Elution Using Transient-Isotachophoretic Gradients. 3. Implementation and Method Development
http://ecite.utas.edu.au/26114
Enantioseparation through Supercritical Fluid Simulated Moving Bed (SF-SMB) Chromatography - Université de LorraineEnantioseparation through Supercritical Fluid Simulated Moving Bed (SF-SMB) Chromatography - Université de Lorraine
Félicie Denet, Willy Hauck, Roger Marc Nicoud, Orazio Di Giovanni, Marco Mazzotti, et al.. Enantioseparation through Supercritical Fluid Simulated Moving Bed (SF-SMB) Chromatography. Industrial and engineering chemistry research, American Chemical Society, 2001, 40 (21), pp.4603 - 4609. ⟨10.1021/ie000959v⟩. ⟨hal-01706022⟩ ...
https://hal.univ-lorraine.fr/hal-01706022
Characterization of CdSe Nanocrystals and their Interaction with Micellar Aggregates by Means of Capillary Electrophoretic...
Characterization of nanocrystals is crucial for the development of many chemical methods based on this technology. For this, there are several techniques, mainly microscopic, and recently capillary electrophoretic techniques, that have been proposed. In our laboratory, we examined several capillary electrophoretic methodologies: zone (CZE), micellar (MEKC), microemulsion (MEEKC), non-aqueous (NACE) and polymer based (CGE). For the separation of water soluble CdSe nanocrystals, CZE, MEKC and CGE were found to be suitable
http://nsti.org/procs/Nanotech2007v4/2/T80.737
Supercritical Fluid Generated Stationary Phases for Liquid Chromatography and Capillary ElectrochromatographySupercritical Fluid Generated Stationary Phases for Liquid Chromatography and Capillary Electrochromatography
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https://www.infona.pl/resource/bwmeta1.element.acs-doi-10_1021_ac034511q
COMPOSITE DESIGN SUPPORT LTD, NE31 1SR HEBBURN Financial InformationCOMPOSITE DESIGN SUPPORT LTD, NE31 1SR HEBBURN Financial Information
COMPOSITE DESIGN SUPPORT LTD TYNE & WEAR NE31 1SR - Dissolved in 2010, Financial performance, director details, business contact information, and more…
http://www.companiesintheuk.co.uk/ltd/composite-design-support
Re: Physics of Chilly Magnus Chord OrgansRe: Physics of Chilly Magnus Chord Organs
Expanding on Jonts explanation, the frequency of vibration is strictly proportional to the speed of sound and inversely proportional to the pipes effective length (f = c/(2*Leff)). The speed of sound depends on the properties of the gas contained in the pipe and the temperature of the gas: c = const*sqrt(T(kelvin)) = const*sqrt(273+T(celsius)) For dry air, const = 20.1, so at 20 degrees celsius c = 20.1*sqrt(273 + 20) = 344 m/s A useful approximation good for a range of temperatures around zero degrees C is c = 331.3 + 0.6*T(celsius) If the pipe were cold, at say 50 degrees F (10 degrees C), the frequency would be 337.3, according to this formula. (338.1 using the more accurate sqrt formula) When warmed to a room temperature of 20 degrees C we are back to 344 m/s. So this is an increase of about 1.8% or about 3 tenths of a semi-tone (which is approx. 5.9%). You can calculate the pitch change in cents using the formula cents_change = 3986.3*log10(f2/f1) = 3986.3*log10(sqrt((273 + Tc2)/(273 + ...
http://www.auditory.org/mhonarc/1999/msg00002.html
Parts Unlimited Metal Valve Stem (XFVS-1218R) - ThumperTalkParts Unlimited Metal Valve Stem (XFVS-1218R) - ThumperTalk
Metal tubeless tire valve stem fits all cast wheels with .327in.-.339in. holes Full-length threading for various rim thicknesses Comes with metal cap, lock nut and O-ring seal 1 3/16in. effective length
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Capillary electrophoresisCapillary electrophoresis
... capillary isoelectric focusing (CIEF), capillary isotachophoresis and micellar electrokinetic chromatography (MEKC) belong also ... "Application of micellar electrokinetic capillary chromatography to the analysis of uncharged pesticides of environmental impact ... Micellar electrophoretic capillary chromatography (MECC) has been developed and applied to the analysis of inks extracted from ... of essential and branched-chain amino acids in nutraceutical products by micellar electrokinetic capillary chromatography". ...
https://en.wikipedia.org/wiki/Capillary_electrophoresis
Micellar electrokinetic chromatographyMicellar electrokinetic chromatography
Injac, R.; Kočevar, N.; Kreft, S. (2007). "Precision of micellar electrokinetic capillary chromatography in the determination ... Micellar electrokinetic chromatography (MEKC) is a chromatography technique used in analytical chemistry. It is a modification ... "Application of Micellar Electrokinetic Capillary Chromatography to the Analysis of Uncharged Pesticides of Environmental Impact ... "Principles of Micellar Electrokinetic Capillary Chromatography Applied in Pharmaceutical Analysis". Advanced Pharmaceutical ...
https://en.wikipedia.org/wiki/Micellar_electrokinetic_chromatography
Traditional Tibetan medicineTraditional Tibetan medicine
Pharmacologically Active Compounds from the Tibetan Medicine Elsholtzia with Micellar Electrokinetic Capillary Chromatography. ... Chenxu Ding; Lingyun Wang; Xianen Zhao; Yulin Li; Honglun Wang; Jinmao You; Yourui Suo , Journal of Liquid Chromatography & ... Yulin Li; Xian'en Zhao; Chenxu Ding; Honglun Wang; Yourui Suo; Guichen Chen; Jinmao You , Journal of Liquid Chromatography & ...
https://en.wikipedia.org/wiki/Traditional_Tibetan_medicine
List of MeSH codes (E05)List of MeSH codes (E05)
... chromatography, micellar electrokinetic capillary MeSH E05.196.181.750 - chromatography, supercritical fluid MeSH E05.196. ... chromatography, liquid MeSH E05.196.181.400.170 - chromatography, affinity MeSH E05.196.181.400.250 - chromatography, gel MeSH ... chromatography, high pressure liquid MeSH E05.196.181.400.383 - chromatography, ion exchange MeSH E05.196.181.400.383.349 - ... chromatography, deae-cellulose MeSH E05.196.181.400.454 - chromatography, paper MeSH E05.196.181.400.454.655 - nucleotide ...
https://en.wikipedia.org/wiki/List_of_MeSH_codes_(E05)
YessotoxinYessotoxin
The sensitivity of conventional CEUV can be improved by using micellar electrokinetic chromatography (MEKC). CEMS has the added ... Capillary electrophoresis (CE)is emerging as the preferred analytical method for YTX analysis, as it has significant advantages ... M. Fernández Amandi; A. Furey; M. Lehane; H. Ramstad; K. J. James (2002). "Liquid chromatography with electrospray ion-trap ... Chromatographic methods with fluorescence detection Liquid chromatography with fluorescence detection (LC-FLD) provides a ...
https://en.wikipedia.org/wiki/Yessotoxin
Micellar liquid chromatographyMicellar liquid chromatography
"Characterisation of retention in micellar high-performance liquid chromatography and in micellar electrokinetic chromatography ... "Micelles as separation media in high-performance liquid chromatography and high-performance capillary electrophoresis: overview ... Micellar liquid chromatography (MLC) is a form of reversed phase liquid chromatography that uses an aqueous micellar solutions ... "Micellar chromatography of inorganic compounds". Journal of Chromatography A. 780 (1-2): 343-360. doi:10.1016/S0021-9673(97) ...
https://en.wikipedia.org/wiki/Micellar_liquid_chromatography
PiracetamPiracetam
"Rapid determination of piracetam in human plasma and cerebrospinal fluid by micellar electrokinetic chromatography with sample ... Piracetam has been found to diminish erythrocyte adhesion to vascular wall endothelium, making any vasospasm in the capillary ... Piracetam may facilitate the deformability of erythrocytes in capillary which is useful for cardiovascular disease. Peripheral ... direct injection". Journal of Chromatography A. 1120 (1-2): 27-34. doi:10.1016/j.chroma.2005.11.071. PMID 16343512. Bravo- ...
https://en.wikipedia.org/wiki/Piracetam
SEPARATION OF METALLOTHIONEIN ISOFORMS BY MICELLAR ELECTROKINETIC CAPILLARY CHROMATOGRAPHY<...SEPARATION OF METALLOTHIONEIN ISOFORMS BY MICELLAR ELECTROKINETIC CAPILLARY CHROMATOGRAPHY<...
SEPARATION OF METALLOTHIONEIN ISOFORMS BY MICELLAR ELECTROKINETIC CAPILLARY CHROMATOGRAPHY. Journal of Chromatography A. 1994 ... SEPARATION OF METALLOTHIONEIN ISOFORMS BY MICELLAR ELECTROKINETIC CAPILLARY CHROMATOGRAPHY. Journal of Chromatography A, 664(1 ... SEPARATION OF METALLOTHIONEIN ISOFORMS BY MICELLAR ELECTROKINETIC CAPILLARY CHROMATOGRAPHY, Journal of Chromatography A, vol. ... SEPARATION OF METALLOTHIONEIN ISOFORMS BY MICELLAR ELECTROKINETIC CAPILLARY CHROMATOGRAPHY. In: Journal of Chromatography A. ...
https://abdn.pure.elsevier.com/en/publications/separation-of-metallothionein-isoforms-by-micellar-electrokinetic
Ethylene Glycol: Systemic Agent | NIOSH | CDCEthylene Glycol: Systemic Agent | NIOSH | CDC
... of polyethylene glycols and polypropylene glycols by capillary zone electrophoresis and micellar electrokinetic chromatography ... Bost RO, Sunshine I [ 1980]. Ethylene-glycol analysis by gas-chromatography. J Anal Toxicol 4(2):102-103.Cao XL, Zhu J [2001]. ... OSHA Salt Lake City, UT: U.S. Department of Labor, OSHA Salt Lake Technical Center, Chromatography Team. ... 3-butylene glycol in human serum and urine by wide-bore column gas chromatography. J Chromatogr B: Biomed Appl 619(2):251-257. ...
https://www.cdc.gov/niosh/ershdb/emergencyresponsecard_29750031.html
DeCS - Termos NovosDeCS - Termos Novos
CHROMATOGRAPHY, MICELLAR ELECTROKINETIC CAPILLARY. CROMATOGRAFIA CAPILAR ELECTROCINETICA MICELAR. CUNNINGHAMELLA. ...
https://decs.bvs.br/P/decswebpage2p.htm
Micellar electrokinetic chromatography for analyzing active site specificity of Pseudomonas aeruginosa elastase<...
Micellar Electrokinetic Capillary Chromatography Chemical Compounds 68% * Chromatography Medicine & Life Sciences 56% ... Micellar electrokinetic chromatography for analyzing active site specificity of Pseudomonas aeruginosa elastase. In: ... keywords = "Micellar electrokinetic chromatography, Protease active site",. author = "Simona Viglio and Giuseppe Zanaboni and ... Micellar electrokinetic chromatography for analyzing active site specificity of Pseudomonas aeruginosa elastase. / Viglio, ...
https://moh-it.pure.elsevier.com/en/publications/micellar-electrokinetic-chromatography-for-analyzing-active-site-
Nano Chromatography and Capillary Electrophoresis: Pharmaceutical and Environmental Analyses | Ebook | Ellibs EbookstoreNano Chromatography and Capillary Electrophoresis: Pharmaceutical and Environmental Analyses | Ebook | Ellibs Ebookstore
Nano Chromatography and Capillary Electrophoresis: Pharmaceutical and Environmental Analyses - Author: Ali, Imran - Price: 81, ... Nano Gas Chromatography, Nano Capillary Electrophoresis, Nano Chiral Chromatography, Micellar Electrokinetic Chromatography, ... Nano Capillary Electrophoresis, Nano Chiral Chromatography, Micellar Electrokinetic Chromatography, Supercritical Fluid ... Nano Chromatography and Capillary Electrophoresis: Pharmaceutical and Environmental Analyses. 81,20€. Add to cart. Ebook, PDF ...
https://www.ellibs.com/book/9780470434918/nano-chromatography-and-capillary-electrophoresis-pharmaceutical-and-environmental-analyses
Capillary Electrophoresis Applications - Isogen LifescienceCapillary Electrophoresis Applications - Isogen Lifescience
The CAPEL Capillary Electrophoresis (CE) instruments can be used in the fields of Biopharma, Environmental Analysis, Chemical ... capillary gel electrophoresis (CGE), capillary isoelectric focusing (CIEF), micellar electrokinetic chromatography (MEKC) and ... Capillary Electrophoresis Applications. The CAPEL Capillary Electrophoresis (CE) instruments are robust, compact, and well ... The method is based on Capillary Gel Electrophoresis and executed according to the USP129 and CH.P 3127. It is also possible to ...
https://isogen-lifescience.com/products/instruments/capel-ce-analysers/capillary-electrophoresis-applications
Application of Hadamard transformation to MEKC<...
Micellar Electrokinetic Capillary Chromatography Medicine & Life Sciences 100% * Chemical Transformation Chemical Compounds 33% ... The capillary and reservoirs were filled with a sample solution containing buffer components and SDS as a pseudostationary ... The capillary and reservoirs were filled with a sample solution containing buffer components and SDS as a pseudostationary ... The capillary and reservoirs were filled with a sample solution containing buffer components and SDS as a pseudostationary ...
https://okayama.pure.elsevier.com/en/publications/application-of-hadamard-transformation-to-mekc
Find Research outputs - University of Canberra Research PortalFind Research outputs - University of Canberra Research Portal
The determination of cocaine and related substances by micellar electrokinetic capillary chromatography. Trenerry, V. C., ... The analysis of illicit heroin seizures by capillary zone electrophoresis. Trenerry, V. C., Wells, R. J. & Robertson, J., 1 Jan ...
https://researchprofiles.canberra.edu.au/en/publications/?descending=false&showAdvanced=false&allConcepts=true&inferConcepts=true&publicationYear=2012&publicationYear=2013&publicationYear=2015&publicationYear=2017&publicationYear=2018&publicationYear=2019&format=&nofollow=true&ordering=date&page=10
DeCS - Termos Novos
CHROMATOGRAPHY, MICELLAR ELECTROKINETIC CAPILLARY. CROMATOGRAFIA CAPILAR ELECTROCINETICA MICELAR. CUNNINGHAMELLA. ...
https://decs2017.bvsalud.org/P/decswebpage2p.htm
DeCS - New Terms
CHROMATOGRAPHY, MICELLAR ELECTROKINETIC CAPILLARY. CROMATOGRAFIA CAPILAR ELECTROCINETICA MICELAR. CROMATOGRAFIA CAPILAR ...
https://decs2010.bvsalud.org/I/decswebpage2i.htm
DeCS - Termos Novos
CHROMATOGRAPHY, MICELLAR ELECTROKINETIC CAPILLARY. CROMATOGRAFIA CAPILAR ELECTROCINETICA MICELAR. CUNNINGHAMELLA. ...
https://decs2007.bvsalud.org/P/decswebpage2p.htm
DeCS - Términos Nuevos
CHROMATOGRAPHY, MICELLAR ELECTROKINETIC CAPILLARY. CROMATOGRAFIA CAPILAR ELETROCINÉTICA MICELAR. CUERPOS DE WEIBEL-PALADE. ...
https://decs2011.bvsalud.org/E/decswebpage2e.htm
DeCS - New TermsDeCS - New Terms
CHROMATOGRAPHY, MICELLAR ELECTROKINETIC CAPILLARY. CROMATOGRAFIA CAPILAR ELECTROCINETICA MICELAR. CROMATOGRAFIA CAPILAR ...
https://decs.bvsalud.org/I/decswebpage2i.htm
DeCS - Términos Nuevos
CHROMATOGRAPHY, MICELLAR ELECTROKINETIC CAPILLARY. CROMATOGRAFIA CAPILAR ELETROCINÉTICA MICELAR. CUERPOS DE WEIBEL-PALADE. ...
https://decs2009.bvsalud.org/E/decswebpage2e.htm
DeCS - New Terms
CHROMATOGRAPHY, MICELLAR ELECTROKINETIC CAPILLARY. CROMATOGRAFIA CAPILAR ELECTROCINETICA MICELAR. CROMATOGRAFIA CAPILAR ...
https://decs2012.bvsalud.org/I/decswebpage2i.htm
DeCS - Termos Novos
CHROMATOGRAPHY, MICELLAR ELECTROKINETIC CAPILLARY. CROMATOGRAFIA CAPILAR ELECTROCINETICA MICELAR. CUNNINGHAMELLA. ...
https://decs2015.bvsalud.org/P/decswebpage2p.htm
DeCS - New Terms
CHROMATOGRAPHY, MICELLAR ELECTROKINETIC CAPILLARY. CROMATOGRAFIA CAPILAR ELECTROCINETICA MICELAR. CROMATOGRAFIA CAPILAR ...
https://decs2008.bvsalud.org/I/decswebpage2i.htm
DeCS - New Terms
CHROMATOGRAPHY, MICELLAR ELECTROKINETIC CAPILLARY. CROMATOGRAFIA CAPILAR ELECTROCINETICA MICELAR. CROMATOGRAFIA CAPILAR ...
https://decs2018.bvsalud.org/I/decswebpage2i.htm
DeCS - Términos Nuevos
CHROMATOGRAPHY, MICELLAR ELECTROKINETIC CAPILLARY. CROMATOGRAFIA CAPILAR ELETROCINÉTICA MICELAR. CUERPOS DE WEIBEL-PALADE. ...
https://decs2019.bvsalud.org/E/decswebpage2e.htm
DeCS - Termos Novos
CHROMATOGRAPHY, MICELLAR ELECTROKINETIC CAPILLARY. CROMATOGRAFIA CAPILAR ELECTROCINETICA MICELAR. CUNNINGHAMELLA. ...
https://decs2020.bvsalud.org/P/decswebpage2p.htm
DeCS - Términos Nuevos
CHROMATOGRAPHY, MICELLAR ELECTROKINETIC CAPILLARY. CROMATOGRAFIA CAPILAR ELETROCINÉTICA MICELAR. CUERPOS DE WEIBEL-PALADE. ...
https://decs2016.bvsalud.org/E/decswebpage2e.htm
DeCS - New Terms
CHROMATOGRAPHY, MICELLAR ELECTROKINETIC CAPILLARY. CROMATOGRAFIA CAPILAR ELECTROCINETICA MICELAR. CROMATOGRAFIA CAPILAR ...
https://decs2013.bvsalud.org/I/decswebpage2i.htm
DeCS - New Terms
CHROMATOGRAPHY, MICELLAR ELECTROKINETIC CAPILLARY. CROMATOGRAFIA CAPILAR ELECTROCINETICA MICELAR. CROMATOGRAFIA CAPILAR ...
https://decs2014.bvsalud.org/I/decswebpage2i.htm
Rethinking data collection and signal processing. 1. Real-time oversampling filter for chemical measurements<...
Micellar Electrokinetic Capillary Chromatography Chemical Compounds 73% * Serotonin Chemical Compounds 67% * Signal to noise ... is demonstrated in its application to the separation of dopamine and serotonin by micellar electrokinetic chromatography with ... is demonstrated in its application to the separation of dopamine and serotonin by micellar electrokinetic chromatography with ... is demonstrated in its application to the separation of dopamine and serotonin by micellar electrokinetic chromatography with ...
https://experts.arizona.edu/en/publications/rethinking-data-collection-and-signal-processing-1-real-time-over
尋找研究成果 - 臺北醫學大學
Use of high-conductivity sample solution with sweeping-micellar electrokinetic capillary chromatography for trace-level ... microphone as gas detectors in the online quantitative detection of hydrogen released from ammonia borane by gas chromatography ...
https://tmu.pure.elsevier.com/zh/publications/?page=843&ordering=type&descending=true&showAdvanced=false&allConcepts=true&inferConcepts=true&originalSearch=&improvedLayoutOrganisationUuid=
Antioxidant and Cytotoxic Effect of Water Extract of Ananas comosus in Human Breast Cancer Cell Line | Widyanto | Journal of...Antioxidant and Cytotoxic Effect of Water Extract of Ananas comosus in Human Breast Cancer Cell Line | Widyanto | Journal of...
Extraction of iridoid glycosides and their determination by micellar electrokinetic capillary chromatography. Journal of ... Chromatography A. 2000 Jan 28;868(1):73-83.. Primurdia EG, Kusnadi J. AKTIVITAS ANTIOKSIDAN MINUMAN PROBIOTIK SARI KURMA ( ...
https://ejournal.uin-malang.ac.id/index.php/jim/article/view/10109
statistiche ricercatorestatistiche ricercatore
Ion-interaction high-performance liquid chromatography and micellar electrokinetic capillary chromatography: two complementary ... Optimisation of the Capillary Electrophoretic Method 67 Sensitizing effect of compost derived humic acid-like on the ... Applications of Micellar Ultrafiltration in Environmental Chemistry 55 Humic acid-like matter isolated from green urban wastes ... OPTIMIZATION OF THE CAPILLARY ELECTROPHORETIC METHOD 62 Characterization of methyl orange and its photocatalytic degradation ...
https://iris.unito.it/cris/rp/rp19868/statistics?type=item
Antioxidant Foods and Digestive Enzymes | Health SupplementsAntioxidant Foods and Digestive Enzymes | Health Supplements
Micellar electrokinetic chromatography has also been developed to separate and detect 5-HTP. For quantitative analysis, gas ... The main methods used for 5-HTP chemical analysis are capillary electrophoresis and reverse phase C-18 column chromatography. ... Capillary electrophoresis is one of the most common ways to measure 5-HTP. It has been used to analyze human platelet-rich ... A third approach is the use of gas chromatography-mass spectrometry, which involves using a dual-mode detection system. The ...
https://blog.healthsupplements.shopping/antioxidant-foods-and-digestive-enzymes-6/
Química | Departments - Science Portal | Universidad de La LagunaQuímica | Departments - Science Portal | Universidad de La Laguna
Optimization of the separation of flavonoids by micellar electrokinetic capillary chromatography: Effect of organic solvents ... of a solid-phase microextraction procedure for the determination of herbicides by micellar electrokinetic chromatography ... Influence of several parameters on efficiency and peak shape in the micellar liquid chromatography of polynuclear aromatic ... Determination of Polynuclear Aromatic Hydrocarbons in Environmental Samples by Micellar Liquid Chromatography HRC Journal of ...
https://portalciencia.ull.es/unidades/2901/colaboracion/investigador/5032069
ELECTROPHORESISMEKCMicroemulsion electrokinetic chromatographyColumn chromatographyIsotachophoresisSeparationAnalytesIsoelectricHPLCDetectionAdditivesAnalytical ChemistryDeterminationLiquidAnalysisSamplesMethodsContaining bufferTubesJournalDetectInteractionDevelopmentMobile phaseHigh-performance liMass spectrometryElectrochromatographyElectrophoreticChromatographicLaser-induced fluoCharacterizationMECCMethodsSurfactantModifiersFused silicaPeptidesFluorescenceQuantitativeQuaternary ammoniumMembranesPrinciplesOrganic1999CompoundsZoneAdsorptionAnalysisExtractionConcentrationAqueousConcentrationsDrugsSolventChapterApplicationsParticlesClassificationEfficiency
ELECTROPHORESIS23
  • The book details the instrumentation, detection, and application of nano chromatography (that is, any chromatographic and capillary electrophoretic method dealing with the detection of a sample at nano gram per liter or lower) and capillary electrophoresis in the analyses of biological and environmental samples. (ellibs.com)
  • Methods discussed include: Nano Gas Chromatography, Nano Capillary Electrophoresis, Nano Chiral Chromatography, Micellar Electrokinetic Chromatography, Supercritical Fluid Chromatography, and Nano High Performance Liquid Chromatography. (ellibs.com)
  • The CAPEL Capillary Electrophoresis (CE) instruments are robust, compact, and well design to be used as Dedicated Analysers for several dedicated solutions in the fields of Biopharma, Environmental Analysis, Chemical Industry, Food Testing, Animal feeding and Veterinary. (isogen-lifescience.com)
  • The CAPEL CE instruments can be used use a versatile Analytical Tool for developing assays in BioPharma that are based on capillary zone electrophoresis (CZE), capillary gel electrophoresis (CGE), capillary isoelectric focusing (CIEF), micellar electrokinetic chromatography (MEKC) and CE-SDS. (isogen-lifescience.com)
  • The method is based on Capillary Gel Electrophoresis and executed according to the USP129 and CH.P 3127. (isogen-lifescience.com)
  • The method is based on Capillary Zone Electrophoresis and executed according to the EP monographs 0579 and 0580. (isogen-lifescience.com)
  • The method is based on capillary zone electrophoresis and executed according to EPA 6500 and ASTM D6508-10. (isogen-lifescience.com)
  • Capillary electrophoresis is one of the most common ways to measure 5-HTP. (healthsupplements.shopping)
  • The main methods used for 5-HTP chemical analysis are capillary electrophoresis and reverse phase C-18 column chromatography. (healthsupplements.shopping)
  • In our studies, capillary electrophoresis (CE) was used for the analysis of water-soluble fountain pen inks. (unboundmedicine.com)
  • Capillary electrophoresis provides a simple, rapid method for the analysis of protein samples. (eurekamag.com)
  • Micellar Electrokinetic Chromatography, sometimes referred as Affinity Capillary Electrophoresis, is a useful tool to the characterization of the drug partitioning in different vehicle systems such as micelles and microemulsions using the capacity factor as hydrophobicity parameter. (astrocyte.in)
  • Capillary electrophoresis ( CE ) is a family of electrokinetic separation methods performed in submillimeter diameter capillaries and in micro- and nanofluidic channels. (dmb-diagnostics.de)
  • Very often, CE refers to capillary zone electrophoresis (CZE), but other electrophoretic techniques including capillary gel electrophoresis (CGE), capillary isoelectric focusing (CIEF), capillary isotachophoresis and micellar electrokinetic chromatography (MEKC) belong also to this class of methods. (dmb-diagnostics.de)
  • Capillary electrophoresis (CE) is a technique well suited for several separation problems in the life sciences. (degruyter.com)
  • Capillary electrophoresis (CE) is often one of the preferred techniques in pharmaceutical quality control and in clinical chemistry, particularly considering the high selectivity and lower costs compared to HPLC. (degruyter.com)
  • Capillary electrophoresis in a polymer network using coated capillaries allowed full resolution of the sialoforms of human transferrin. (degruyter.com)
  • Capillary zone electrophoresis allowed full resolution of the transferrin isoforms with a high analytical performance in a short analysis time thanks to a strong electroosmotic flow. (degruyter.com)
  • Also, using capillary zone electrophoresis, it was shown that CDT is a suitable marker of chronic alcohol abuse detection in transferrin CD (common/cathodal) variants. (degruyter.com)
  • This so-called "Free Zone Electrophoresis" was first implemented by Tiselius and Hjerten in 1965 in rotating capillaries with 3 mm diameters and further developed by Hjerten in 1967. (kapillarelektrophorese.com)
  • However, the method most frequently used for the electrophoretic separation of different analytes is still capillary zone electrophoresis, the field of application which ranges from inorganic ions to proteins to large biomolecules. (kapillarelektrophorese.com)
  • Breadmore, MC and Dawod, M and Quirino, JP, Recent advances in enhancing the sensitivity of electrophoresis and electrochromatography in capillaries and microchips (2008-2010) , Electrophoresis, 32, (1) pp. 127-148. (edu.au)
  • Dawod, M and Breadmore, MC and Guijt, RM and Haddad, PR, Electrokinetic supercharging-electrospray ionisation-mass spectrometry for separation and on-line preconcentration of hypolipidaemic drugs in water samples , Electrophoresis, 31, (7) pp. 1184-1193. (edu.au)
MEKC3
  • The geometry of the catalytic site of Pseudomonas aeruginosa elastase was reexamined, exploiting the specific feature of micellar electrokinetic chromatography (MEKC), i.e., its ability to detect a decrease of intact substrate and simultaneous formation of reaction products. (elsevier.com)
  • Micellar electrokinetic chromatography (MEKC) separation of the analytes was achieved using 30 mM sodium dodecyl sulfate (SDS) with a detection limit in the range of 2-20 muM. (canada.ca)
  • Standard buffer recipes, surfactants used in micellar electrokinetic chromatography (MEKC), chiral selectors, useful buffer additives, actions to deal with complex matrices, and aspects of validation have been collected. (degruyter.com)
Microemulsion electrokinetic chromatography1
  • Microemulsions are also used in the capillary electrophoretic technique of microemulsion electrokinetic chromatography (MEEKC). (chromatographyonline.com)
Column chromatography6
  • This is done by separating the substance through reverse phase C-18 column chromatography and acidifying the solution with 0.1 percent v/v formic acid. (healthsupplements.shopping)
  • Two acidic homogeneous polysaccharides (EAP-H-a1 and EAP-H-a2) were isolated from the fruits of Elaeagnus angustifolia L. through DEAE-52 and Sephadex G-75 column chromatography, and the physicochemical, structural properties, and biological activities of the polysaccharides were investigated. (bvsalud.org)
  • Gas chromatography is in principle similar to column chromatography (as well as other forms of chromatography, such as HPLC , TLC ), but has several notable differences. (orange.com)
  • First, the process of separating the compounds in a mixture is carried out between a liquid stationary phase and a gas mobile phase, whereas in column chromatography the stationary phase is a solid and the mobile phase is a liquid. (orange.com)
  • Second, the column through which the gas phase passes is located in an oven where the temperature of the gas can be controlled, whereas column chromatography (typically) has no such temperature control. (orange.com)
  • Chromatography dates to 1903 in the work of the Russian scientist, Mikhail Semenovich Tswett , [4] who separated plant pigments via liquid column chromatography. (orange.com)
Isotachophoresis1
  • Other techniques that can be performed with CE instruments, such as capillary isoelectric focusing (CIEF), capillary isotachophoresis (CITP), and capillary electrochromatography (CEC), are briefly discussed. (degruyter.com)
Separation7
  • The use of the surfactant sodium dodecyl sulphate for the separation of metallothionein isoforms by micellar electrokinetic capillary chromatography (MECC) is described. (elsevier.com)
  • BEATTIE, JH & RICHARDS, MP 1994, ' SEPARATION OF METALLOTHIONEIN ISOFORMS BY MICELLAR ELECTROKINETIC CAPILLARY CHROMATOGRAPHY ', Journal of Chromatography A , vol. 664, no. 1, pp. 129-134. (elsevier.com)
  • RICHARDS, M P . / SEPARATION OF METALLOTHIONEIN ISOFORMS BY MICELLAR ELECTROKINETIC CAPILLARY CHROMATOGRAPHY . (elsevier.com)
  • The power of this technique is demonstrated in its application to the separation of dopamine and serotonin by micellar electrokinetic chromatography with amperometric detection. (arizona.edu)
  • The IDE chip positioned very close to the separation capillary outlet served as an amplification/detection system without the requirement for frequent 'capillary-electrode' alignment. (canada.ca)
  • Microemulsion liquid chromatography (MELC) is a recent development offering reduced sample preparation times for complex samples and generic separation conditions applicable to a wide range of solutes. (chromatographyonline.com)
  • Dawod, M and Breadmore, MC and Guijt, RM and Haddad, PR, Strategies for the on-line preconcentration and separation of hypolipidaemic drugs using micellar electrokinetic chromatography , Journal of Chromatography A, 1217, (3) pp. 386-393. (edu.au)
Analytes1
  • The micelles affect the chromatography as analytes partition with the micelles rather than adsorb onto the stationary phase. (chromatographyonline.com)
Isoelectric1
  • In 1989, a capillary isoelectric focusing method was developed for quantitative measurement of CDT. (degruyter.com)
HPLC1
  • A high-performance liquid chromatography (HPLC) method endowed with a gradient elution and a UV detection system was established and validated for the determination of phenolic acids, phenolic alcohols, hydroxycinnamic acid derivatives, flavonoids, secoiridoids and lignans during olive ( Olea europaea L.) fruit development (green, purple and black olives). (ocl-journal.org)
Detection2
  • A third approach is the use of gas chromatography-mass spectrometry, which involves using a dual-mode detection system. (healthsupplements.shopping)
  • The most common analytical methodologies providing baseline resolution of ∆8-THC and ∆9-THC in non-biological matrices are liquid-chromatography coupled to diode-array detection (LC-DAD or LC-PDA), while liquid chromatography coupled to mass spectrometry is preferred for biological matrices. (bvsalud.org)
Additives1
  • used for the first time micellar components as electrolyte additives and thus enhanced the range of application of CE to include neutral compounds. (kapillarelektrophorese.com)
Analytical Chemistry1
  • Gas chromatography ( GC ) is a common type of chromatography used in analytical chemistry for separating and analyzing compounds that can be vaporized without decomposition . (orange.com)
Determination3
  • Suomi J, Sirén H, Hartonen K, Riekkola ML. Extraction of iridoid glycosides and their determination by micellar electrokinetic capillary chromatography. (uin-malang.ac.id)
  • Dawod, M and Breadmore, MC and Guijt, RM and Haddad, PR, Counter-flow electrokinetic supercharging for the determination of non-steroidal anti-inflammatory drugs in water samples , Journal of Chromatography A, 1216, (15) pp. 3380-3386. (edu.au)
  • S. Fleury-Souverain, J. Maurin, D. Guillarme, S. Rudaz, and P. Bonnabry, Development and application of a liquid chromatography coupled to mass spectrometry method for the simultaneous determination of 23 antineoplastic drugs at trace levels, Journal of Pharmaceutical and Biomedical Analysis , 221 , 115034 (2022). (unige.ch)
Liquid7
  • Journal of Liquid Chromatography and Related Technologies, Vol. 19, Núm. (ull.es)
  • The precision of CE is as good as in liquid chromatography (LC). (degruyter.com)
  • In Microemulsion liquid chromatography (MELC) 1-4 a microemulsion mobile phase is used with conventional reversed-phase (RP) columns. (chromatographyonline.com)
  • MELC is an extension of micellar liquid chromatography (MLC). (chromatographyonline.com)
  • Hence the full name of the procedure is "Gas-liquid chromatography", referring to the mobile and stationary phases, respectively. (orange.com)
  • Gas chromatography is also sometimes known as vapor-phase chromatography (VPC), or gas-liquid partition chromatography (GLPC). (orange.com)
  • [5] Archer John Porter Martin , who was awarded the Nobel Prize for his work in developing liquid-liquid (1941) and paper (1944) chromatography, is therefore credited for the foundation of gas chromatography. (orange.com)
Analysis1
Samples1
  • Dawod, M and Breadmore, MC and Guijt, RM and Haddad, PR, Electrokinetic supercharging for on-line preconcentration of seven non-steroidal anti-inflammatory drugs in water samples , Journal of Chromatography A, 1189, (1-2) pp. 278-284. (edu.au)
Methods1
  • In combination with optical methods, multiple thin-layer chromatography (TLC) is currently the analytical tool used by forensic chemists to separate, compare and distinguish inks based on their dye composition. (unboundmedicine.com)
Containing buffer1
  • The capillary and reservoirs were filled with a sample solution containing buffer components and SDS as a pseudostationary phase. (elsevier.com)
Tubes1
  • Another way to avoid the thermic convection is through the use of tubes or capillaries which have a small internal diameter and which facilitate a fast removal of the Joule heating. (kapillarelektrophorese.com)
Journal4
  • Journal of Chromatography A , 664 (1), 129-134. (elsevier.com)
  • Journal of Chromatography A. 2000 Jan 28;868(1):73-83. (uin-malang.ac.id)
  • HRC Journal of High Resolution Chromatography, Vol. 19, Núm. (ull.es)
  • Meighan, MM and Dawod, M and Guijt, RM and Hayes, MA and Breadmore, MC, Pressure-assisted electrokinetic supercharging for the enhancement of non-steroidal anti-inflammatory drugs , Journal of Chromatography A, 1218, (38) pp. 6750-6755. (edu.au)
Detect1
Interaction1
  • In this paper the interaction of some hydrophilic and lipophilic vitamins with micellar systems consisted of bile salts and phospholipids was considered using ACE. (astrocyte.in)
Development1
  • The popularity of gas chromatography quickly rose after the development of the flame ionization detector. (orange.com)
Mobile phase1
  • In gas chromatography, the mobile phase (or "moving phase") is a carrier gas , usually an inert gas such as helium or an unreactive gas such as nitrogen . (orange.com)
High-performance li5
  • Micelles as separation media in high-performance liquid chromatography and high-performance capillary electrophoresis: overview and perspective. (ncsu.edu)
  • In high-performance liquid chromatography (HPLC) we inject the sample, which is in solution form, into a liquid mobile phase. (libretexts.org)
  • Purchase High Performance Liquid Chromatography & Capillary Electrophoresis - 1st Edition. (savilerowandco.com)
  • For these reasons, confirmatory tests follow, generally performed by high performance liquid chromatography (HPLC) and gas chromatography (GC), coupled with mass spectrometry (MS). These methods also allow quantification of targeted compounds (12,13). (chromatographyonline.com)
  • Abstract A rapid and sensitive reverse phase high performance liquid chromatography (RP-HPLC) method has been developed for simultaneous estimation of Lisinopril and Hydrochlorothiazide. (pharmaresearchlibrary.com)
Mass spectrometry7
  • Ultra-preconcentration and determination of selected pharmaceutical and personal care products in different water matrices by solid-phase extraction combined with dispersive liquid-liquid microextraction prior to ultra high pressure liquid chromatography tandem mass spectrometry analysis. (sigmaaldrich.com)
  • Sensitive detection of benzophenone-type ultraviolet filters in plastic food packaging materials by sheathless capillary electrophoresis-electrospray ionization-tandem mass spectrometry. (sigmaaldrich.com)
  • Title: Analysis of N-nitrosamines in water by isotope dilution gas chromatography-electron ionisation tandem mass spectrometry. (aablocks.com)
  • Title: Determination of eight nitrosamines in water at the ng L(-1) levels by liquid chromatography coupled to atmospheric pressure chemical ionization tandem mass spectrometry. (aablocks.com)
  • Title: Determination of volatile nitrosamines in meat products by microwave-assisted extraction and dispersive liquid-liquid microextraction coupled to gas chromatography-mass spectrometry. (aablocks.com)
  • Mikhail, IE and Tehranirokh, M and Gooley, AA and Guijt, RM and Breadmore, MC, In-syringe electrokinetic protein removal from biological samples prior to electrospray ionization mass spectrometry , Angewandte Chemie - International Edition, 59, (51) pp. 23162-23168. (edu.au)
  • Hyphenations of Capillary Chromatography with Mass Spectrometry provides comprehensive coverage of capillary chromatography with mass spectrometry-both single and multidimensional approaches. (savilerowandco.com)
Electrochromatography4
  • Capillary electrochromatography. (ncsu.edu)
  • This book covers theory, instrumentation, theory and practice in micellar electrokinetic chromatography, isotachophoresis, capillary isoelectric focusing, capillary and planar electrochromatography, 2D-gel electrophoresis, lab-on-a-chip systems and more. (exlibris.ch)
  • The book provides the broad knowledge on electromigration techniques including: theory of CE, description of instrumentation, theory and practice in micellar electrokinetic chromatography, isotachophoresis, capillary isoelectric focusing, capillary and planar electrochromatography (including description of instrumentation and packed and monolithic column preparation), 2D-gel electrophoresis (including sample preparation) and lab-on-a-chip systems. (exlibris.ch)
  • Capillary electrophoresis (CE), capillary electrochromatography (CEC), and more recently nano-liquid chromatography (nano-LC) have been successfully miniaturized and applied to forensic drug analysis. (chromatographyonline.com)
Electrophoretic5
  • Prediction of electrophoretic mobilities of peptides in capillary zone electrophoresis by quantitative structure-mobility relationships using the offord model and artificial neural networks. (ncsu.edu)
  • Calculation of electrophoretic mobilities in water-organic modifier mixtures in capillary electrophoresis. (ncsu.edu)
  • A capillary electrophoretic immunoassay with chemiluminescence detection (CEIA-CL) using a non-competitive format for analyzing tumor marker alpha-fetoprotein (AFP) has been developed. (infona.pl)
  • Capillary Electrophoretic (CE) Methods. (absolutelabs.net)
  • contact the free At the Heart of the State: The Method( CuPc) Capillary work as round, Just can take or market Deep water mixture to depend nanometer-scale salt understand with individual acetate of neutral low oligonucleotides, thereof can reach end planta are with production of complex independent Chemicals were with lacquer g, cathode suicide, concentration CineTech, project material, equilibrium of Indirect electrophoretic Children, and downstream on. (valleybay.com)
Chromatographic3
  • The advantages of reduced costs for solvent and waste disposal have established the value of miniaturization in chromatography, where micro-capillary, and nano-liquid chromatographic systems have gradually emerged (17). (chromatographyonline.com)
  • The chromatographic separation was carried out by normal phase chromatography using a 3 µm column of cellulose based chiral stationary phase (Chiralcel-OD 250mm × 4.6mm) with a mobile phase comprised of n-hexane: ethanol: methanol: heptafluoro butyric acid: diethyl amine (70:15:15:0.05:0.1, v/v) at a flow rate of 1.0 mL/min. (scirp.org)
  • 12] R. G. Wolcott, J. W. Dolan and L. R. Snyder, "Computer Simulation for the Convenient Optimization of Isocratic Reversed-Phase Liquid Chromatographic Separations by Varying Temperature and Mobile Phase Strength," Jour-nal of Chromatography A, Vol. 869, No. 1-2, 2000, pp. 3-25. (scirp.org)
Laser-induced fluo7
  • Evaluation of liposomal delivery of antisense oligonucleotide by capillary electrophoresis with laser-induced fluorescence detection. (ncsu.edu)
  • Monitoring liposome-mediated delivery and fate of an antisense drug in cell extracts and in single cells by capillary electrophoresis with laser-induced fluorescence. (ncsu.edu)
  • Quantitation of intracellular concentration of a delivered morpholino oligomer by capillary electrophoresis-laser-induced fluorescence: Correlation with upregulation of luciferase gene expression. (ncsu.edu)
  • Evaluation of the binding between potential anti-HIV DNA-based drugs and viral envelope glycoprotein gp120 by capillary electrophoresis with laser-induced fluorescence detection. (ncsu.edu)
  • Steroid analysis in single cells by capillary electrophoresis with collinear laser-induced fluorescence detection. (ncsu.edu)
  • Nonaqueous capillary electrophoresis with laser induced fluorescence detection. (ncsu.edu)
  • Combining capillary electrophoresis (CE) with detection methods such as laser-induced fluorescence (LIF) and electrochemical. (infona.pl)
Characterization8
  • Characterization and classification of pseudo-stationary phases in micellar electrokinetic chromatography using chemometric methods. (ncsu.edu)
  • Selectivity patterns in micellar electrokinetic chromatography characterization of fluorinated and aliphatic alcohol modifiers by micellar selectivity triangle. (ncsu.edu)
  • Characterization of solvation properties of lipid bilayer membranes in liposome electrokinetic chromatography. (ncsu.edu)
  • Characterization of chemical selectivity in micellar electrokinetic chromatography VI. (ncsu.edu)
  • Characterization of mixed micellar pseudostationary phases in electrokinetic chromatography using linear solvation energy relationships. (ncsu.edu)
  • These results suggest that two-dimensional capillary electrophoresis may be of value for the rapid characterization of endoscopic and surgical biopsies. (nih.gov)
  • Characterization of polyethylene glycols and polypropylene glycols by capillary zone electrophoresis and micellar electrokinetic chromatography. (fourniture-laitiere.com)
  • Hoffman, Gabriela Chilom, Swaminathan Venkatesan, and James A. Rice " Electron and Force Microscopy Characterization of Particle read the butchers guide to well raised meat how to buy cut and cook great capillaries and Surface Phenomena Associated with Individual Natural Organic Matter Fractions", Microsc. (drpulley.co.uk)
MECC1
  • In addition, buffer additives such as organic solvents, cyclodextrins and surfactants (MECC micellar electrokinetic capillary chromatography) can be used to effect separation. (booksc.org)
Methods1
Surfactant2
  • read indias war world war ii and the of the present desire on the Chiral Micellar Electrokinetic Separation of bulk scenes pushing the Surfactant N-dodecoxycarbonylvaline. (nolimitshessen.de)
  • read indias war world war ii and the making of materials of Basic Pharmaceutical Drugs by Micellar Electrokinetic Chromatography declining a Chiral Surfactant, N-Dodecoxycarbonylvaline. (nolimitshessen.de)
Modifiers1
  • MECK benefits from high peak efficiency due to electroosmotic flow (EOF) in the separation capillary, compounded with large variety of synthetic surfactants, organic modifiers, temperature and variable separation voltage has made MECK the method of choice for separation scientists. (eurjchem.com)
Fused silica5
  • These columns are made from fused silica capillaries with internal diameters from 44-200 μm and lengths of 50-250 mm. (libretexts.org)
  • Fused-silica capillaries immersed in an aqueous solution, positioned in close proximity to each other and the functionalized surface, created a laminar flow junction with a resulting reaction volume of ∼5 pL. (stanford.edu)
  • The setup was operated with a syringe pump, delivering reagents to the surface through a fused-silica capillary. (stanford.edu)
  • The other fused-silica capillary was connected to a Venturi easy ambient sonic-spray ionization source, sampling the resulting analytes at a slightly higher flow rate compared to the feeding capillary. (stanford.edu)
  • The hydrolysis of acetylcholine by acetylcholinesterase into choline was monitored in real-time for a range of acetylcholine concentrations, fused-silica capillary geometries, and operating flow rates. (stanford.edu)
Peptides2
  • Separation of peptides and proteins by capillary electrophoresis using acidic buffers containing tetraalkylammonium cations and cyclodextrins. (ncsu.edu)
  • In microchip-based capillary electrophoresis, the resolution and separation efficiency of small peptides and amino acids can be noticeably improved by adding a low molecular weight (30,000) soluble polymer additive, polyvinypyrrolidone in the separation medium. (infona.pl)
Fluorescence2
  • We have constructed a high-speed, two-dimensional capillary electrophoresis system with a compact and high-sensitivity fluorescence detector. (nih.gov)
  • The system was successfully constructed using an inverted fluorescence microscope, a highly sensitive photon counter, a photomultiplier tube (PMT) and a capillary electrophoresis microchip. (infona.pl)
Quantitative2
  • Applications of micellar electrokinetic chromatography in quantitative structure-activity relationship studies: Estimation of log P-ow and bioactivity. (ncsu.edu)
  • capillary fees( infected in 1862) want good capillary awards that are ligand-exchanged to details unrated as read the, hulk, structure and regular complex voids Completing third to quantitative tickets. (drpulley.co.uk)
Quaternary ammonium1
  • Nonaqueous capillary electrophoresis chiral separations with quaternary ammonium beta-cyclodextrin. (ncsu.edu)
Membranes1
  • In principle, five types of membrane units can be distinguished: Hollow fiber membranes (large dead volume causes zone broadening), Dead end filter systems with single (or stack of) membrane(s), Porous sheets loaded with specific binding particles (not strictly speaking membrane chromatography). (instantcare.online)
Principles1
  • Chapter 2 The Principles of Capillary Electrophoresis 6 electron holds focused far delocalised by the useful area of cent, which is a required formate even. (mohren-heizung.de)
Organic1
  • Separation of polycyclic aromatic hydrocarbons by nonaqueous capillary electrophoresis using charge-transfer complexation with planar organic cations. (ncsu.edu)
19991
  • 10] J. W. Dolan, L. R. Snyder, N. M. Djordjevic, D. W. Hill and T. J. Waeghe, "Reversed-Phase Liquid Chromato-graphic Separation of Complex Samples by Optimizing Temperature and Gradient Time: I. Peak Capacity Limi-tations," Journal of Chromatography A, Vol. 857, 1999, pp. 1-20. (scirp.org)
Compounds2
  • Capillary electrophoresis chiral separations of basic compounds using cationic cyclodextrin. (ncsu.edu)
  • read indias war world of the sensitive solution on the Thermodynamic Quantities of Micellar Solubilization of Chiral Pharmaceutical Compounds in new purposes of N-Dodecoxycarbonylvaline following Micellar Electrokinetic Chromatography. (nolimitshessen.de)
Zone3
  • Artificial neural network modeling of peptide mobility and peptide mapping in capillary zone electrophoresis. (ncsu.edu)
  • Capillary Zone Electrophoresis (CZE). (absolutelabs.net)
  • 6] M. Wang, X. Ding, H. Chen and X. Chen, "Enantiosepa-ration of Palonosetron Hydrochloride by Capillary Zone Electrophoresis with High-Concentration β-CD as Chiral Selector," Analytical Sciences, Vol. 25, No. 10, 2009, pp. 1217-1220. (scirp.org)
Adsorption3
  • Stacks of flat membrane disks have been employed for affinity membrane chromatography in column-like devices, the main purpose being to increase the adsorption capacity. (instantcare.online)
  • Paper chromatography uses a cellulose paper as the stationary phase, and the mechanism of separation is based on solid-liquid adsorption. (instantcare.online)
  • An e-book on the use of capillary gas adsorption columns in the lab and within a range of fields With capillary gas adsorption columns commonly in use in laboratories today, this book was written to present a consistent treatment of gas-solid capillary chromatography. (savilerowandco.com)
Analysis8
  • Expression and analysis of green fluorescent proteins in human embryonic kidney cells by capillary electrophoresis. (ncsu.edu)
  • 主页 Journal of Pharmaceutical and Biomedical Analysis Multivariate analysis of capillary electrophoresis separation conditions for Z-E isomers of. (booksc.org)
  • Capillary electrophoresis (CE) has several advantages which make it a method of choice for such analysis. (booksc.org)
  • A read indias war world war ii and the making of modern south asia of Analysis of Recombinant Acidic Fibroblast Growth Factor( student) by Capillary Electrophoresis. (nolimitshessen.de)
  • Recent developments in high-resolution separation techniques based on capillary-scale chromatography and electrophoresis have transformed the analysis of free and conjugated mono- and oligosaccharides. (ist.ac.at)
  • In Capillary Electrophoresis of Carbohydrates, hands-on experts describe cutting-edge techniques in capillary electrophoresis (CE) for the analysis of complex carbohydrates. (ist.ac.at)
  • Membrane Chromatography Market by Product (Consumables (Syringe Filters, Spin Column), Accessories), Technique (Ion Exchange, Affinity), Operation Mode (Flow Through), End User (Pharmaceutical & Biopharmaceutical Companies, - Market research report and industry analysis - … The apparent Brunnauer-Emmet-Teller (BET) surface area and the average pore size of the materials varied substantially for a series of crosslinked monoliths synthesized using scCO2 as the porogen over a range of reaction pressures [23]. (instantcare.online)
  • Recently, capillary electrophoresis (CE) and related techniques have demonstrated their potential in forensic analysis, offering high separation efficiency, the possibility of automation, reduced consumption of reagents, and low sample volume for analysis (14,15). (chromatographyonline.com)
Extraction1
  • Tan, M and Zhang, M and Li, F and Maya, F and Breadmore, MC, A three-dimensional printed electromembrane extraction device for capillary electrophoresis , The Journal of Chromatography A, 1595 pp. 215-220. (edu.au)
Concentration1
  • 2C-T-2 the parent drug in rat urine samples was detected by means of capillary electrophoresis/UV absorbance combined with an on-line sample concentration technique. (erowid.org)
Aqueous2
  • Non-aqueous capillary electrophoresis chiral separations with sulfated beta-cyclodextrin. (ncsu.edu)
  • Non-aqueous capillary electrophoresis. (exlibris.ch)
Concentrations1
  • Capacity factors for a series of eight CBQCA-labelled amino acids in a sodium dodecyl sulfate (SDS) micellar system containing different concentrations of salt were measured and were found to be related to both the hydrodynamic radius of the salt counter-ion (Li+, Na+, Rb+) and the relative hydrophobicity of the amino acid. (ubc.ca)
Drugs1
  • Interaction of basic drugs with lipid bilayers using liposome electrokinetic chromatography. (ncsu.edu)
Solvent2
  • Capillary columns use less solvent and, because the sample is diluted to a lesser extent, produce larger signals at the detector. (libretexts.org)
  • This read indias war world war ii is overcome as a purification of ' representative ' replacing to process and salt, a capillary weather for the pathway is of fluorometry and solvent. (nolimitshessen.de)
Chapter1
  • Other forms of liquid chromatography receive consideration in Chapter 12.6 . (libretexts.org)
Applications3
  • Size exclusion chromatography (SEC) has become the method of choice for rapid isolation of relatively pure EVs from plasma, yet it has technical limitations for certain downstream applications. (instantcare.online)
  • The book examines nearly all capillary chromatography approaches, combined with a variety of MS forms, giving readers a wide and detailed view on current-day analytical strategies and applications. (savilerowandco.com)
  • This book also looks at the factors that affect column stability, materials of restricted volatility, and some applications of glass capillary gas chromatography. (savilerowandco.com)
Particles1
  • Capillary columns packed with 3-5 μm particles have been prepared with column efficiencies of up to 250 000 theoretical plates [Novotony, M. Science , 1989 , 246 , 51-57]. (libretexts.org)
Classification1
  • Micellar selectivity triangle for classification of chemical selectivity in electrokinetic chromatography. (ncsu.edu)
Efficiency1
  • Efficiency studies in nonaqueous capillary electrophoresis. (ncsu.edu)