Liquid phase microextraction. Medical search. Frequent questions

Determination of volatile nitrosamines in meat products by microwave-assisted extraction and dispersive liquid-liquid microextraction coupled to gas chromatography-mass spectrometry. (semanticscholar.org)
Dispersive liquid-liquid microextraction in food analysis. (semanticscholar.org)
Liquid-phase microextraction (LPME) methods including single-drop microextraction (SDME), hollow-fiber LPME (HF-LPME), and dispersive liquid-liquid microextraction (DLLME) have in the very short time since their invention grabbed the attention of scientists. (tubitak.gov.tr)
Two liquid-phase microextraction procedures, single-drop microextraction (SDME) and dispersive liquid-liquid microextraction (DLLME), have been developed for the determination of lead by electrothermal atomic absorption spectrometry (ETAAS). (e3s-conferences.org)

Solid-phase microextraction (SPME) is a rapid and simple analytical technique which uses coated fused- silica fibers to extract analytes from aqueous samples. (bvsalud.org)
This study develops a method of SPME analysis for seven pyrethroids , including fenpropathrin, lambda-cyhalothrin, deltamethrin, fenvalerate, permethrin , tau-fluvalinate and bifenthrin in groundwater samples using high performance liquid chromatography combined with post-column photochemically induced fluorimetry derivatization and fluorescence detection (SPME-LC-PIF-FD). (bvsalud.org)
Dairy products by solid phase microextraction (SPME) followed by GC-MS. (sigmaaldrich.com)
Solid Phase Microextraction (SPME) is a sampling technique that uses a thin polymer fiber with a hydrophobic coating. (cdc.gov)
The solid phase microextraction technique using stationary phase coated into capillaries (in-tube SPME) allows sample preparation step hyphenated with the chromatographic system, resulting in the automation of analysis and improving the analytical accuracy and precision of the method. (fapesp.br)
Normally, the capillaries used in fiber-in-tube SPME are polyetheretherketone (PEEK) tubing packed with selective stationary phase coated onto fused silica SPME fibers. (fapesp.br)
The system is equipped for liquid injection, headspace and solid phase microextraction (SPME Arrow). (rms-foundation.ch)
ref. 1) Solid Phase Micro Extraction (SPME) has seen a tremendous development. (palsystem.com)
Polydimethylsiloxane/Divinylbenzene (PDMS/DVB) SPME Fibers.Solid Phase Microextraction (SPME) is an innovative, solvent-free sample prep technology that is fast, economical, and versatile. (selectscience.net)
SPME uses a fiber coated with a liquid (polymer), a solid (sorbent), or a combination of both. (selectscience.net)
The recent acquisition of the Gerstel Multipurpose Sampler has given it an entire new lease of life, allowing us to perform sample preparation and automatic injection by headspace analysis, Solid Phase Micro Extraction (SPME) and conventional liquid injection. (drchrispook.com)
headspace-solid phase microextraction, HS-SPME) i ekstrakcija tekuće-tekuće. (ktf-split.hr)
Volatile compounds are isolated using two isolation metods: headspace-solid phase microextraction (HS-SPME) and liquid-liquid extraction. (ktf-split.hr)
Solid-phase microextraction coupled to liquid chromatography-inductively coupled plasma-mass spectrometry (SPME-LC-ICP-MS) is presented as a new approach for the extraction and speciation of methylmercury (MeHg) and ethylmercury (EtHg) in a complex urine matrix. (edu.hk)
Good extraction results have been seen using solid-phase microextraction (SPME), and headspace solid-phase microextraction (HS-SPME) [4,5]. (betasciencepress-publishing.com)
Depending on the volume of meconium extracts being analyzed, simple liquid-liquid and solid phase or more sophisticated SPME or HS-SPME can be used. (betasciencepress-publishing.com)

Application of solid-phase microextraction for determination of pyrethroids in groundwater using liquid chromatography with post-column photochemically induced fluorimetry derivatization and fluorescence detection. (bvsalud.org)
Determination of 16 polycyclic aromatic hydrocarbons in milk and related products using solid-phase microextraction coupled to gas chromatography-mass spectrometry. (semanticscholar.org)
Liquid chromatography with ultraviolet absorbance detection for the analysis of tetracycline residues in honey. (semanticscholar.org)
Headspace solid-phase microextraction for the determination of volatile organic sulphur and selenium compounds in beers, wines and spirits using gas chromatography and atomic emission detection. (semanticscholar.org)
Use of headspace solid-phase microextraction coupled to liquid chromatography for the analysis of polycyclic aromatic hydrocarbons in tea infusions. (semanticscholar.org)
Method development and validation for strobilurin fungicides in baby foods by solid-phase microextraction gas chromatography-mass spectrometry. (semanticscholar.org)
Stir bar sorptive extraction coupled to liquid chromatography for the analysis of strobilurin fungicides in fruit samples. (semanticscholar.org)
Reversed-phase liquid chromatography on an amide stationary phase for the determination of the B group vitamins in baby foods. (semanticscholar.org)
Wine samples by dichloromethane microextraction followed by gas chromatography-flame ionization detection (GC-FID). (sigmaaldrich.com)
Scented products by reversed phase high performance liquid chromatography (HPLC) combined with diode array detector (DAD). (sigmaaldrich.com)
A stability-indicating assay by reversed-phase high performance liquid chromatography method was developed and validated for the determination of sulthiame (STM). (chemie.de)
For the first time, hollow-fiber liquid-phase microextraction combined with high-performance liquid chromatography-ultraviolet was used to extract trans,trans-muconic acid, in urine samples of workers who had been exposed to benzene. (chemie.de)
A simple reversed-phase high-performance liquid chromatography method was developed and validated for simultaneous determination of Metformin hydrochloride (MET) and Glimepiride (GLM) in combination and estimation of their principal degradation products. (chemie.de)
The instrumental techniques used for these purposes are the high-performance liquid chromatography coupled to different types of detection (HPLC-MS, HPLC-UV, HPLC-DAD, HPLC-F, HPLC-ED) and the capillary electrophoresis (CE-DAD, CE-LIF). (unibo.it)
Methods based on mass spectrometry (triple quadrupole), also coupled to liquid chromatography, are also designed. (unibo.it)
The analytical microextraction methods of gas chromatography coupled with flame ionisation detector (GC-FID) for determination of selected essential oils in herbs were proposed. (infona.pl)
Recently, analytical techniques such as mass spectrometry coupled with liquid chromatography (HPLC-MS) and off-line solid phase extraction (SPE) have been applied for quantitative determinations of ²-amyloid peptides in biological fluids. (fapesp.br)
Two extraction strategies for albendazole, chloramphenicol, trimethoprim, enrofloxacin, oxitetracycline and nicarbazin in egg were optimized for its quantitation by liquid chromatography. (usda.gov)
TITLE: Determination of caffeine in dietary supplements by miniaturized portable liquid chromatography. (mintota.com)
TITLE: Towards in field miniaturized liquid chromatography: Biocides in wastewater as a proof of concept. (mintota.com)
TITLE: Evaluation of the sample treatment influence in green and sustainable assessment of liquid chromatography methods by the HEXAGON tool: Sulfonate- based dyes determination in meat samples. (mintota.com)
TITLE: Capillary Liquid Chromatography for the Determination of Terpenes in Botanical Dietary Supplements. (mintota.com)
x02212;octane, methylcyclopentane, and cyclohexane were measured in BAL fluid specimens by headspace solid-phase microextraction /gas chromatography/mass spectrometry. (cdc.gov)
W. Fan , Xu, Y. , and Qian, M. C. , Identification of Aroma Compounds in Chinese "Moutai" and "Langjiu" Liquors by Normal Phase Liquid Chromatography Fractionation Followed by Gas Chromatography/Olfactometry , vol. 1104. (oregonstate.edu)

Several factors influencing the microextraction efficiency, such as the nature and volume of organic solvent, the temperature and volume of sample solution, stirring rate and extraction time were investigated and optimized. (lu.se)
3. Great attention is paid to the development and validation of miniaturised pretreatment procedures for biological samples, for example by microsolid phase extraction, microextraction by sorbent packed (MEPS), liquid-liquid microextraction, dried matrix spots (DMS) and volumetric absorptive microsampling (VAMS). (unibo.it)
Miniaturized methods of liquid-liquid extraction. (bvsalud.org)
Ionic liquid-static headspace single drop micro extraction (IL-SHS SDME) involving three phase equilibrium was performed to extract aromatic hydrocarbons from water. (shu.edu)
Two ionic liquids, 1-Butyl-1-methylpyrrolidinium bis (trifluoromethylsulfonyl)imide and 1-Butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, both having same anion were individually used for the extraction. (shu.edu)
Ionic liquid-submerged single drop micro extraction (IL-SSDME)involving two phase equilibriam and ionic liquid-static headspace single drop micro extraction (IL-SHS SDME) involving three phase equilibrium were compared in terms of their partition coefficient. (shu.edu)
Ionic liquid based microextractions not only served as 'green' alternative to traditional extraction but also proved to be selective, efficient and time saving sample preparation and pre-concentration technique. (shu.edu)
Sample preparation usually includes solid-phase extraction, azeotropic distillation, and derivatization with pentafluorobenzylbromide (PFBB) in order to convert the dialkyl phosphate acids to esters (Loewenherz et al. (cdc.gov)
7. ANALYTICAL METHODS extraction (SPE) with a C18 cartridge or liquid-liquid microextraction (LLME) procedure prior to quantification. (cdc.gov)
The paper shows the classic extraction methods, such as liquid-liquid extraction and solid-phase extraction. (psychiatriapolska.pl)
It also contains the modifications of these methods such as liquid-phase microextraction and cloud point extraction. (psychiatriapolska.pl)
According to the literature it can be stated that the best recovery of VEN and its main metabolite, O-demethylvenlafaxine, was obtained when the liquid-liquid extraction was used. (psychiatriapolska.pl)
Research interests:µ-solid phase extraction, solid phase microextraction, liquid phase microextraction and stir bar sorptive extraction. (madridge.org)
Modern sample preparation techniques including µ-solid phase extraction, solid phase microextraction, liquid phase microextraction and stir bar sorptive extraction. (madridge.org)
To date, analytical methods used to quantify FAEE in meconium are based on Bernhardt et al and involve liquid-liquid (hexane/acetone) and solid phase extraction [3]. (betasciencepress-publishing.com)

The liquid phase microextraction (LPME) was combined with the modified Graphite furnace atomic absorption spectrometry (GF-AAS) for determination of lead in the water and solid samples. (scirp.org)
S. Nazari, "Determination of Trace Amounts of Lead by Modified Graphite Furnace Atomic Absorption Spectrometry after Liquid Phase Microextraction with Pyrimidine-2-thiol," American Journal of Analytical Chemistry , Vol. 2 No. 7, 2011, pp. 757-767. (scirp.org)

The longitudinal arrangement of these fibers within the capillary generates microchannels that favor both the mass transfer (convection process) process of the sample to a stationary phase and the low pressure of the analytical system and reduces the internal dead volume of the capillary. (fapesp.br)

A novel environmental friendly, room temperature route using an ionic liquid 1-n-butyl-3-methylimidazolium hydroxide ([BMIM]OH) for the synthesis of Mn 3 O 4 nanoparticles is presented. (infona.pl)
Due to the different combination of the these groups, the ionic liquid exhibits unique selectivity. (shu.edu)
For the present research, commercially available ionic liquid capillary columns were investigate for thermodynamics and kinetics of the retention of alkanes and aromatic hydrocarbons. (shu.edu)
A plot of ΔH, ΔS were made against claimed polarity of the ionic liquid columns. (shu.edu)
The Thermodynamics of retention of aromatic hydrocarbons on ionic liquid stationary phase SLB IL-100 using air as carrier gas was studied. (shu.edu)
The kinetic study revealed the possibility of using ionic liquid stationary phase with air as career gas. (shu.edu)
The stability of ionic liquid stationary phases in the presence of oxygen in air escalates its commercial usage to new horizon of applications. (shu.edu)
A direct , no interface introduction of ionic liquid into the gas chromatographic inlet was performed. (shu.edu)
Ionic liquid stationary phase was used for the chromatographic separation and GC MS for instrumental analysis. (shu.edu)
The partition coefficient of the aromatic hydrocarbons between the ionic liquid and water were determined by depletion study. (shu.edu)

When compared with polymeric hollow-fiber-based solvent-bar microextraction and hollow-fiber-protected liquid-phase microextraction, the silica monolith method reportedly provided better results. (chromatographyonline.com)

This type of chemical derivatization results in loss of ionic charge and reduced polarity making each mercury species molecule volatile so that it can escape the liquid phase and accumulate in the gaseous phase ("headspace") directly above the sample. (cdc.gov)

Two microextraction methods for the isolation of essential oils from plants such as Lavandula spica L., Melissa officinalis L., Mentha piperita L. and Salvia officinalis L. were used. (infona.pl)
The methods of solid-phase and single-drop. (infona.pl)

Researchers from Huazhong University of Science and Technology (Wuhan, China) and the National University of Singapore (Singapore) developed a liquid-phase microextraction method based on solvent-bar microextraction. (chromatographyonline.com)

Dhandapani, Ramkumar, "Ionic Liquids in Micro Extractions and Gas Chromatographic Stationary Phases" (2014). (shu.edu)

Solid-phase microextraction: a complementary in vivo sampling method to microdialysis. (nih.gov)
It is used for extracting organics from a matrix (solid, liquid or gaseous) into a stationary phase immobilized on a fiber. (palsystem.com)
The fiber coating removes the compounds from your sample by absorption in the case of liquid coatings or adsorbtion in the case of solid coatings. (selectscience.net)
Dive into the research topics of 'Rapid speciation of methylated and ethylated mercury in urine using headspace solid phase microextraction coupled to LC-ICP-MS'. Together they form a unique fingerprint. (edu.hk)

In the present study, a new and versatile liquid-phase microextraction method is described. (lu.se)

Zhang, X. , Measurement of thermal conductivity of liquids at high pressure and correlation of thermal conductivity data by using a equation of state for pure liquids , Gongcheng Rewuli Xuebao , 1990, 11, 233-5. (nist.gov)
The low volatility, tailorable physico-chemical property and high thermal stability of ionic liquids make them an ideal choice for gas chromatographic stationary phase. (shu.edu)

Ionic liquids are salts that exist entirely as ionic species. (shu.edu)

A reliable, sensitive and rapid method for determination of nicotine and three minor alkaloids (cotinine, anabasine and nornicotine) in tobacco by ultra-high performance liquid chromatography in hydrophilic interaction chromatography mode coupled with tandem mass spectrometry has been established. (vu.lt)
Developing methods for the determination of drugs used in Drug Facilitated Crimes (DFC) in biological samples using extraction techniques such as dispersive liquid-liquid microextraction (DLLME), solid-phase extraction and solid phase microextraction coupled to gas chromatography-mass spectrometry (GC-MS), liquid chromatography-mass spectrometry (LC-MS) and high performance liquid chromatography (HPLC). (oswego.edu)
In this study, an extraction method based on sorptive fabric phase coupled to ultra-high-performance liquid chromatography tandem mass spectrometry detection (FPSE-UHPLC-MS/MS) has been developed for the determination of four progestogens and six androgens in environmental and biological samples. (nih.gov)
Endocrine disrupting compounds such as bisphenol A (BPA), alkylphenols and phthalates were quantitated by on-line in-tube solid-phase microextraction coupled with high performance liquid chromatography (in-tube SPME/HPLC) with UV detection. (elsevier.com)
PAH have traditionally been separated using high performance liquid chromatography with UV detection (HPLC-UV), but the limits of detection of the method of the HPLC-UV techniques, employing direct injection of samples, are too high for the detection of the low concentrations in real samples that are near the regulated limit. (1library.org)
Determination of ractopamine and clenbuterol in beef by graphene oxide hollow fiber solid-phase microextraction and high-performance liquid chromatography. (rightchoicehr.com)
2. Yılmaz PK, Ertaş A, Kolak U. Simultaneous determination of seven phthalic acid esters in beverages using ultrasound and vortex-assisted dispersive liquid-liquid microextraction followed by high-performance liquid chromatography. (dergipark.org.tr)
18. Mitani K, Izushi F, Kataoka H. Analysis of phthalate contamination in infusion solutions by automated on-line in-tube solid-phase microextraction coupled with high-performance liquid chromatography. (dergipark.org.tr)
A stability-indicating assay by reversed-phase high performance liquid chromatography method was developed and validated for the determination of sulthiame (STM). (chemeurope.com)
For the first time, hollow-fiber liquid-phase microextraction combined with high-performance liquid chromatography-ultraviolet was used to extract trans,trans-muconic acid, in urine samples of workers who had been exposed to benzene. (chemeurope.com)
Isolation and Determination of Tocopherols and Tocotrienols from the Seed of Capparis Ovata Grown in Turkey by Reversed-Phase High-Performance Liquid Chromatography. (gerli.com)
The quantification of the selected pharmaceuticals was achieved by high performance liquid chromatography equipped with diode array detector (HPLC-DAD). (uj.ac.za)
These systems can support higher resolution for low-level determinations not possible on high performance liquid chromatography (HPLC) systems. (louisiana.edu)
The multi-instruments involve high-performance liquid chromatography (HPLC), X-ray diffraction (XRD) and Fourier transform infrared (FTIR). (scirp.org)

Herein, we proposed a high matrix tolerance analytical method, using a combination of ammonium pyrrolidine dithiocarbamate/methyl isobutyl ketone (APDC-MIBK) microextraction and laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), for Cd concentration determination in aqueous samples. (scirp.org)
Analysis of oxidation products of α-tocopherol in extra virgin olive oil using liquid chromatography-tandem mass spectrometry. (gerli.com)
Identification of α-Tocopherol and Its Oxidation Products by Ultra-Performance Liquid Chromatography Coupled with Quadrupole Time-of-Flight Mass Spectrometry. (gerli.com)
A total of 23 VOCs from this strain were analyzed via solid-phase microextraction gas chromatography-mass spectrometry. (relx.com)
T. R René and T. Vinod, "Quantitative Determination of Formaldehyde in Cosmetics Using a Combined Solid- Phase Microextraction-Isotope Dilution Mass Spectrometry Method," Journal of Chromatography A, Vol. 1029, No. 1-2, 2004, pp. 217-222. (scirp.org)
Q. Zhang, C. Wang, X. Wang, T. Wu and Q. Ma, "Determination of Common Antibiotics and Metronidazole in Cosmetics by Ultra Performance Liquid Chromatography-Tandem Mass Spectrometry," Chinese Journal of Chromatography, Vol. 27, No. 5, 2009, pp. 237- 239. (scirp.org)
The dispersive liquid-liquid microextraction combined with gas chromatography with mass spectrometry detection (DLLME-GC-MS) method could be successfully applied to the determination of other PBDEs in water samples. (naukarus.com)
Keywords: dispersive liquid-liquid microextraction, gas chromatography with mass spectrometry detection, polybrominated diphenyl ethers, uncertainty. (naukarus.com)

A fast and simple method involving separation and determination of thallium (Tl) species, based on novel ionic liquid-assisted ion pairing dispersive liquid-liquid microextraction (DLLME) method, was developed. (uchile.cl)
It consists of a preconcentration step based on dispersive liquid-liquid microextraction (DLLME) and measurement by flame AAS. (fq.edu.uy)

Determination of lead at trace levels was achieved by slotted quartz tube-flame atomic absorption spectrometry (SQT-FAAS) after the preconcentration with deep eutectic solvent-based liquid phase microextraction (DES-LPME). (yildiz.edu.tr)
Novel sol-gel titania-poly(dimethylsiloxane) (TiO2-PDMS) and titania-silica-N-(triethoxysilylpropyl)-O-polyethylene oxide urethane (TiO2-SiO2-TESP-PEO) coatings were developed for capillary microextraction (CME) to perform on-line preconcentration and HPLC analysis of trace impurities in aqueous samples. (usf.edu)

The Liquid chromatography with photodiode array detection (HPLC-DAD) was used for analysis of paraben species. (researchsquare.com)
19. Chaudhary AK, Waske SA, Yadav S, Chandrashekhar TG, Singh V. Validated reverse phase HPLC method for the determination of DEHP content in reconstituting diluents and in reconstituted solutions of imipenem and cilastatin for injection. (dergipark.org.tr)
To perform on-line CME-HPLC, the sol-gel TiO2-PDMS or TiO2-SiO2-TESP-PEO capillarywas installed in the HPLC injection port as an external sampling loop, and a conventionalHPLC separation column was used for the liquid chromatographic separation. (usf.edu)
The sol-gel TiO2-PDMS-coated microextraction capillary was used for on-line CME-HPLC analysis of non-polar and moderately polar analytes, and the sol-gel coatings showed excellent pH (1-13), and solvent (acetonitrile and methanol) stabilities under elevated temperatures (150 C) over analogous non-sol-gel silica-based coatings. (usf.edu)

Molecular Complex-Based Dispersive Liquid-Liquid Microextraction: Analysis of Polar Compounds in Aqueous Solution. (scirp.org)
The freezing crystallization method uses the method of low temperature freezing to make certain compounds in the essential oil crystallize in solid form, and then separate the solid material from other liquid components to obtain a purer product. (laboaochina.com)
Including coverage of the background, principles, mechanisms, and applications, Liquid Biphasic System addresses how to adapt the technology for the purification of useful compounds with greater cost efficiency and greener processing. (embracingtheredqueen.com)
Liquid chromatograph mass spectrometer LCMS-2020 can detect molecular masses with high accuracy, from which can be checked the purity of compounds, ascertain whether the required compound is obtained. (ktu.edu)
Ultra performance liquid chromatography (UPLC) allows separation of the mixtures of compounds of high to medium polarity. (ktu.edu)
Pegasus 4D GCxGC-TOFMS system used for determination and identification of volatile aroma compounds in the liquid sample and in the headspace of sample matrix (vapour phase). (ktu.edu)
This article from Issue 10 of the Analytix Reporter , produced by Merck, describes a unique stationary phase for improved retention and analysis of polar compounds and examples of its applications in food and clinical analysis. (sepscience.com)
After the first phase of sampling, compounds that were not detected were excluded from further sampling and analysis. (clu-in.org)
Both the liquid culture and volatile organic compounds (VOCs) produced by this strain exhibited strong nematicidal activity. (relx.com)
The compounds were defined as mercuric ammonium chloride, liquid paraffin, etc. (scirp.org)
O. Evans and G. D. McKee, "Determination of Mercury (L1) and Organ Mercury Compounds by Reversed-Phase Liquid Chromatography with Reductive Electrochemical Detection," Analyst, Vol. 113, 1988, pp. 243-246. (scirp.org)
M. Fujita and E. Takabatake, "Continuous Flow Reducing Vessel in Determination of Mercuric Compounds by Liquid Chromatography/Cold Vapor Atomic Absorption Spectrometry," Analatical Chemistry, Vol. 55, 1983, pp. 454-457. (scirp.org)

The analytes were transported by application of an electrical potential difference of 100V across the sorbent/solvent phase from the aqueous sample into the organic extractant phase in the membrane bag. (sigmaaldrich.com)
As the sample passes through the stationary phase, the polar analytes in the sample will interact and retain on the polar sorbent while the solvent, and other non-polar impurities pass through the cartridge. (greatgreenwedding.com)
To our knowledge, this is the first research on the use of sol-gel titania (or titania-silica)-based organic-inorganic materials as a sorbent in capillary microextraction. (usf.edu)

The developed method was applied to determination of parabens in liquid pharmaceuticals such as ampule, syrups and nose drop samples. (researchsquare.com)
Water samples (1 × 10 -3 l) are pumped on one side of a porous hydrophobic membrane separating the sample from an organic solvent phase and analytes are extracted at the aqueous-organic interface. (chemistryworld.com)
10. Luo Y-B, Yu Q-W, Yuan B-F, Feng Y-Q. Fast microextraction of phthalate acid esters from beverage, environmental water and perfume samples by magnetic multi-walled carbon nanotubes. (dergipark.org.tr)
Shimadzu has announced the release of its "Advanced i-Series" liquid chromatographs meeting user demands for analysing a large number of samples or quickly re-processing data even when working from home. (sepscience.com)

Chromatography is a separation process involving two phases, one stationary and the other mobile. (greatgreenwedding.com)
Ultrasound-Assisted Emulsification Microextraction for Separation of Trace Amounts of Antimony Prior to FAAS Determination. (scirp.org)
Liquid Biphasic System: Fundamentals and Applications in Bioseparation Technology explores in detail the fundamental processes and applications of this new separation system, aiding in the understanding of the basic principles of the technique and offering constructive criticisms of the latest findings. (embracingtheredqueen.com)
The phase separation of incompatible liquids has been a topic of significant importance in chemical and industrial engineering for many years. (embracingtheredqueen.com)
Well-understood examples of this phenomenon include the phase separation of oil with water and the phase separation of non-polar organic solvents with water. (embracingtheredqueen.com)
A derivative of gas chromatography where the mobile phase is a gas and the stationary phase is a liquid, separation is by partitioning. (anthias.co.uk)

Microextraction and gas chromatographic determination of parabens. (vu.lt)

For example, if we have a single solute that may partition between an aqueous and an organic phase, there are three components (the aqueous and organic phases and the solute) and two phases (the aqueous and organic), so F = 3 - 2 + 2 = 3 . (chromatographyonline.com)
Now we have four components (the aqueous and organic phases, the deprotonated amine, and its protonated counterpart) with the two phases, or F = 4 - 2 + 2 = 4 . (chromatographyonline.com)
After centrifugation, an aliquot of the organic phase is injected in the nebuliser of an atomic absorption spectrometer by means of a lab-made microsampling device. (fq.edu.uy)

A fully automated effervescence assisted dispersive liquid-liquid microextraction based on a stepwise injection system. (spbu.ru)

19. Successive liquid-phase microextraction of acidic and basic analytes. (nih.gov)
In routine analysis, liquid-liquid microextraction (LLE) is the most widely used sample pre-treatment technique, whose goal is to isolate the target analytes, provide enrichment, with cleanup to lower the chemical noise, and enhance the signal. (akjournals.com)

The purpose of this study is the development and validation of a simple, novel, selective and fast off-line microextraction technique combining capillary electrophoresis with in-column field-amplified sample injection (FASI) for the simultaneous determination of capecitabine (CAP) and its active metabolite, 5-Fluorouracil (5-FU), in human plasma. (metu.edu.tr)

Then a fiber coated with an extractor pulls the terpenes from the liquid/gas. (rareterpenes.com)

The related driving force for the liquid membrane has been studied by means of facilitated and non-facilitated transport. (uab.cat)
The liquid membrane was constituted by a solution of n-decanol in the presence or absence of carriers. (uab.cat)

In the past two decades, liquid-phase microextraction (LPME) was introduced to overcome these drawbacks. (akjournals.com)
In this study, trace amounts of manganese ions were extracted using a sensitive, selective, rapid, and simple micro-funnel magnetic stirring-assisted liquid phase microextraction (MF-MSA-LPME) method and determined by flame atomic absorption spectrometry (FAAS). (jchr.org)

In these solvents one or more compound mixed and produced a eutectic solvent with a melting point significantly lower than either of the individual components, they are mostly liquid at room temperature. (researchsquare.com)
Moreover, ammonium-based ionic liquids are a new generation of green solvents," said one of the senior scientists from Alfa Chemistry. (razorbladepress.com)
One common theme to both of these research areas is the use of nonconventional solvents, including supercritical fluids, ionic liquids, and deep eutectic solvents. (chromatographyonline.com)

The book consists of an initial introduction providing a brief overview, from fundamentals to applications, followed by nine chapters addressing the respective phase diagrams (interpretation and characterization) and remarkable examples of their applications. (embracingtheredqueen.com)

Meanwhile, related research focused on ionic liquids grows daily. (razorbladepress.com)

Using gaseous ammonia as the added base, the method was (1) verified using lab-prepared e-liquid solutions with known αfb values and (2) used to determine the αfb values for 18 commercial e-liquids. (nih.gov)
What is microextraction method? (greatgreenwedding.com)
A simple and rapid method was developed for analyzing contamination of endocrine disruptors in liquid medicines and intravenous injection solutions. (elsevier.com)
A method is presented describing in situ preparation of the titania-based sol-gel PDMS and TESP-PEO coatings and their immobilization on the inner surface of a fused-silica microextraction capillary. (usf.edu)

Nowadays, the arousing interest in greener and sustainable analytical chemistry has increased the development of microextraction techniques as alternative sample preparation procedures. (akjournals.com)
J. M. F. Costa-Fernandez and L. R. A. Pereiro-Garcia, "Direct Coupling of High-Performance Liquid Chroma- tography to Microwave-Induced Plasma Atomic Emission Spectrometry via Volatile-Species Generation and Its Application to Mercury and Arsenic Speciation," Journal of Analytical Atomic Spectrometry, Vol. 10, 1995, pp. 1019-1025. (scirp.org)

For gas/liquid equilibrium of the volatile free-base form, the headspace nicotine concentration is proportional to c e,fb and thus also to α fb . (nih.gov)
This type of chemical derivatization results in loss of ionic charge and reduced polarity making each mercury species molecule volatile so that it can escape the liquid phase and accumulate in the gaseous phase ("headspace") directly above the sample. (cdc.gov)
Essential oils, also known as volatile oils, are a general term for oily liquids with aromatic odors in plants. (laboaochina.com)

Ultra performance liquid chromatography equipped with a photodiode array dedector was employed for the identification of main constituents of natural dyes. (vu.lt)
X. F. Wang, W. F, Zhang, J. Wei and R. Pen, "Simulta- neous Determination of Seven Sexual Hormones in Essential Oil by Performance Liquid Chromatography with Diode and Fluorescence Detectors," Chinese Journal of Chromatography, Vol. 27, No. 3, 2009, pp. 328-332. (scirp.org)

The liquid medicines and intravenous injection solutions could be used directly without any pretreatment, and the BPA, alkylphenols and phthalates in these solutions were automatically analyzed. (elsevier.com)

Organisms3

Chemicals and Drugs7

Analytical, Diagnostic and Therapeutic Techniques and Equipment9

Phenomena and Processes2

Technology, Industry, Agriculture1

Health Care1

Dispersive liquid-liquid microextraction4

SPME16

Chromatography24

Extraction15

Determination2

Analytical1

Ionic liquid10

Polymeric1

Derivatization1

Methods2

Solvent1

Stationary phases1

Solid4

Versatile1

Thermal2

Species1

High-performance li14

Mass spectrometry8

DLLME2

Preconcentration2

HPLC4

Compounds12

Sorbent3

Samples4

Separation6

Chromatographic determination1

Organic3

Dispersive liquid1

Analytes2

Technique1

Fiber1

Membrane2

LPME2

Solvents3

Characterization1

Focused on ionic1

Method4

Analytical2

Volatile3

Performance liquid chromatography2

Pretreatment1