Solid Phase Microextraction
Phyllachorales
Volatile Organic Compounds
Gas Chromatography-Mass Spectrometry
Volatile organic compounds released by the entomopathogenic fungus Beauveria bassiana. (1/109)
The composition of volatile organic compounds (VOC) released by the entomopathogenic fungus Beauveria bassiana (Hyphomycete: Deuteromycotina) utilizing two different carbon sources was investigated. Analyses were performed by solid-phase microextraction (SPME) coupled to capillary gas chromatography (CGC) and CGC-mass spectrometry (MS). Major components in glucose-grown cultures were diisopropyl naphthalenes, ethanol, and sesquiterpenes. Alkane-grown fungal VOC switched to a fingerprint with prevalence of n-decane. This is the first report on the volatiles released by entomopathogenic fungi. (+info)Analytical microextraction: current status and future trends. (2/109)
Analytical microextractions, defined as nonexhaustive sample preparation with a very small volume of extracting phase (microliter range or smaller) relative to the sample volume, represent an important development in the field of analytical chemistry. Analytes are extracted by a small volume of a solid or semi-solid polymeric material, as in solid-phase microextraction (SPME), or alternatively by a small volume of a liquid, as in liquid-phase microextraction (LPME). This paper gives an overview of the SPME and LPME techniques and discusses future trends. This includes a discussion of the different extraction formats available, commercial equipment, method transfer from traditional sample preparation methods to microextraction, and performance as well as robustness for the latter type of systems. In addition, the paper contains a unified approach to the understanding of extraction thermodynamics and kinetics applicable to both SPME and LPME. (+info)Progress of solid-phase microextraction coatings and coating techniques. (3/109)
Solid-phase microextraction (SPME) has been popular as an environmentally friendly sample pretreatment technique to extract a very wide range of analytes. This is partly owing to the development of SPME coatings. One of the key factors affecting the extraction performances, such as the sensitivity, selectivity, and reproducibility, is the properties of the coatings on SPME fibers. This paper classifies the materials used as SPME coatings and introduces some common preparation techniques of SPME coating in detail, such as sol-gel technique, electrochemical polymerization technique, particle direct pasting technique, restricted access matrix SPME technique, and molecularly imprinted SPME technique. (+info)Optimization of the SPME parameters and its online coupling with HPLC for the analysis of tricyclic antidepressants in plasma samples. (4/109)
Solid-phase microextraction (SPME)-liquid chromatography (LC) is used to analyze tricyclic antidepressant drugs desipramine, imipramine, nortriptyline, amitriptyline, and clomipramine (internal standard) in plasma samples. Extraction conditions are optimized using a 2(3) factorial design plus a central point to evaluate the influence of the time, temperature, and matrix pH. A Polydimethylsiloxane-divinylbenzene (60-mum film thickness) fiber is selected after the assessment of different types of coating. The chromatographic separation is realized using a C(18) column (150 x 4.6 mm, 5-microm particles), ammonium acetate buffer (0.05 mol/L, pH 5.50)-acetonitrile (55:45 v/v) with 0.1% of triethylamine as mobile phase and UV-vis detection at 214 nm. Among the factorial design conditions evaluated, the best results are obtained at a pH 11.0, temperature of 30 degrees C, and extraction time of 45 min. The proposed method, using a lab-made SPME-LC interface, allowed the determination of tricyclic antidepressants in in plasma at therapeutic concentration levels. (+info)HS-SPME determination of volatile carbonyl and carboxylic compounds in different matrices. (5/109)
Specific chromatographic methodologies are developed for the analysis of carboxylic acids (C(2)-C(6), benzoic) and aldehydes (C(2)-C(10)) of low molecular weight in diverse matrices, such as air, automotive exhaust gases, human breath, and aqueous matrices. For carboxylic acids, the method is based on their reaction with pentafluorobenzyl bromide in aqueous solution, followed by the separation and identification of the resultant pentafluorobenzyl esters by means of headspace (HS)-solid-phase microextraction (SPME) combined with gas chromatography (GC) and electron capture detection (ECD). Detection limits in the microg/m(3) range are reached, with relative standard deviation (RSD) less than 10% and linear response (R(2) > 0.99) over two orders of magnitude. The analytical methodology for aldehydes is based on SPME with simultaneous derivatization of the analytes on the fiber, by reaction with pentafluorophenylhydrazine. The derivatization reagent is previously deposited on the SPME fiber, which is then exposed to the gaseous matrix or the HS of the sample solution. The pentafluorophenyl hydrazones formed on the fiber are analyzed selectively by means of GC-ECD, with detection limits in the ng/m(3) range, RSD less than 10%, and linear response (R(2) > 0.99) over two orders of magnitude. (+info)Solid-phase microextraction coupled with liquid chromatography for determination of beta-carotene in food. (6/109)
Beta-carotene in vegetables and nutritional products is analyzed using solid-phase microextraction (SPME) coupled with liquid chromatography (LC) to improve the speed of analysis and to reduce the consumption of organic solvents. The relative standard deviations (RSDs) of this analytical method for beta-carotene determinations in vegetables and nutritional products are approximately 10% and 5%, respectively. The amount of beta-carotene was found to vary from 0.35 +/- 0.05 ppm to 76.5 +/- 6.9 ppm for several vegetables in Taiwan. This method was linear over the range of 0.4-40 ppm with correlation coefficients higher than 0.997. The experimentally determined level of beta-carotene in nutritional products varied from 3.8 +/- 0.2 ppm to 24.6 +/- 1.1 ppm following SPME-LC. The recoveries of beta-carotene for these measurements following SPME were all higher than 97% +/- 2% (n = 3). The detection limits of beta-carotene for this method were from 0.027 to 0.054 ppm. Conventional solvent extractions take approximately 4-6 h for extraction and reconcentration but SPME takes approximately 1 h. From several tens to hundreds of milliliters, organic solvents can be saved using SPME. SPME provides better analyses on beta-carotene than conventional solvent extraction for nutritional products in terms of speed, precision, simplicity, and solvent consumption. (+info)Determination of microcystins in water using integrated solid-phase microextraction with microbore high-performance liquid chromatography-electrospray quadruple time-of-flight mass spectrometry. (7/109)
The development of a technique combining solid-phase microextraction (SPME) with microbore high-performance liquid chromatography (micro-HPLC)-tandem quadrupole time-of-flight (QTOF) mass spectrometry (MS) for determination of dissolved microcystins in water is reported. Several important parameters affecting the efficiency of SPME extraction of microcystins are investigated. A microbore C18 column HPLC coupled with tandem QTOF-MS with information-dependent acquisition (IDA) is developed to effectively analyze microcystins in microliter volumes of SPME extracts. The micro-HPLC-QTOF-MS with IDA technique provides comprehensive information, including a survey chromatogram (total ion chromatogram), full scan mass spectrum, and product ion scan mass spectra at different collision energies for individual analytes, which allows for both identification and quantitation in the same run. Linear calibration curves of microcystin standard [microcystin (MC)-arginine (R)R] 1-100 microg/L and of microcystin standard [MC-leucine (L)R] 1-250 microg/L are obtained with a correlation coefficient of 0.996. The combination of SPME with HPLC-QTOF-MS and IDA offers limits of detection of 0.6 pg for MC-RR and 1.6 pg for MC-LR. Analysis of spiked lake-water samples shows a recovery of > 86% for MC-RR and > 70% for MC-LR. This technique requires small sample volumes, minimizes the use of organic solvents, and provides sensitive and information-rich analysis of unknown samples. (+info)Male sex pheromone release and female mate choice in a butterfly. (8/109)
In butterflies female mate choice is influenced by both visual and olfactory cues, the latter of which are important at close range. Males of the green-veined butterfly, Pieris napi, are known to release citral (mixture of geranial and neral, 1:1), but its role(s) and conditions of release are not known. Here, we show that male P. napi release citral when interacting with conspecific males, conspecific females, heterospecific males and also when alone. The amount of citral released correlated strongly with male flight activity, which explained more than 70% of the variation. This suggests that males do not exercise control over turning release on or off, but rather that citral is emitted as a passive physical process during flight. Electroantennogram experiments showed that female antennal response was ten times more sensitive to citral than male response. Females expressed acceptance behavior when exposed to models made with freshly excised male wings or those treated with citral following chemical extraction, but not to ones with extracted wings only. Hence, these behavioral and electrophysiological tests provide strong evidence that citral is a signal from the male directed to the female during courtship, and that it functions as a male sex pheromone. (+info)"Solid Phase Microextraction (SPME) is a solvent-free sample preparation technique where a coated fiber extracts analytes from a sample matrix based on partitioning between the sample and the fiber coating, and then directly desorbs them into a analytical instrument for detection and quantification."
Solid-phase microextraction (SPME) is an advanced technique used in analytical chemistry for the preparation and extraction of samples. It's not exclusively a medical term, but it does have applications in clinical and medical research. Here's a definition:
Solid-phase microextraction (SPME) is a solvent-free sample preparation technique that integrates sampling, extraction, concentration, and cleanup into a single step. It involves the use of a fused-silica fiber, which is coated with a thin layer of a stationary phase, such as polydimethylsiloxane (PDMS) or polyacrylate. This fiber is exposed to the sample matrix, allowing the analytes (compounds of interest) to be adsorbed or absorbed onto the coating. After the extraction step, the fiber is then inserted into a gas chromatograph or high-performance liquid chromatograph for analysis. SPME is widely used in various fields, including environmental monitoring, food analysis, and biomedical research, due to its simplicity, rapidity, and low cost. In the medical field, it can be applied for the analysis of drugs, metabolites, or other compounds in biological samples such as blood, urine, or tissue.
Phyllachorales is an order of fungi in the class Dothideomycetes, characterized by their production of pycnidial or stromatic ascostromata and bitunicate asci, with mostly saprobic or plant pathogenic species.
Phyllachorales is an order of fungi in the class Dothideomycetes. It includes mostly plant pathogenic species that form dark, raised, pustule-like structures on the surface of leaves and stems. These structures, called stromata, contain the reproductive structures (asci and ascospores) of the fungi. The ascospores are forcibly discharged from the ascus and can infect other parts of the host plant or be dispersed to new hosts. Some members of Phyllachorales also produce asexual spores called conidia.
Phyllachorales includes several families, such as Phyllachoraceae, Schizoparmaceae, and Melanconiellaceae, with over 100 genera and more than 1,000 species. Many of the species in this order are important plant pathogens that can cause significant crop losses. For example, species in the genus Phyllachora can cause leaf spots and anthracnose on a wide range of plants, including coffee, cocoa, and citrus.
Volatile Organic Compounds (VOCs) are organic chemicals that have a low boiling point and high vapor pressure, allowing them to easily evaporate and release into the air at room temperature, potentially posing health risks when inhaled.
Volatile Organic Compounds (VOCs) are organic chemicals that have a low boiling point and easily evaporate at room temperature. They can be liquids or solids. VOCs include a variety of chemicals, such as benzene, toluene, xylene, and formaldehyde, which are found in many household products, including paints, paint strippers, and other solvents; cleaning supplies; pesticides; building materials and furnishings; office equipment such as copiers and printers, correction fluids and carbonless copy paper; and glues and adhesives.
VOCs can cause both short- and long-term health effects. Short-term exposure to high levels of VOCs can cause headaches, dizziness, visual disturbances, and memory problems. Long-term exposure can cause damage to the liver, kidneys, and central nervous system. Some VOCs are also suspected or known carcinogens.
It is important to properly use, store, and dispose of products that contain VOCs to minimize exposure. Increasing ventilation by opening windows and doors or using fans can also help reduce exposure to VOCs.
Liquid-phase microextraction (LPME) is a sample preparation technique that involves the separation and preconcentration of analytes from a larger volume of sample matrix into a small volume of extraction phase, which is immiscible with the sample, typically through the use of a supported liquid membrane or a droplet suspended in an aqueous solution.
Liquid-phase microextraction (LPME) is a sample preparation technique used in analytical chemistry and clinical laboratory medicine. It is a miniaturized version of traditional liquid-liquid extraction, which involves the separation of analytes from a sample matrix based on their partitioning between two immiscible liquids.
In LPME, a small volume (microliters to nanoliters) of an organic extractant phase is placed in a micro-syringe or contained within a porous membrane or hollow fiber. This extractant phase is then introduced into a larger sample solution, where analytes partition from the aqueous sample matrix into the organic phase due to their higher solubility in the organic solvent. After equilibrium has been reached, the extractant phase is withdrawn and analyzed for the presence of the target analytes using various analytical techniques such as gas chromatography (GC), high-performance liquid chromatography (HPLC), or mass spectrometry (MS).
LPME offers several advantages over traditional liquid-liquid extraction, including reduced solvent consumption, lower cost, shorter analysis time, and higher enrichment factors. It is commonly used for the preconcentration and cleanup of environmental, biological, and clinical samples prior to analysis.
Gas Chromatography-Mass Spectrometry (GC-MS) is a powerful analytical technique that combines the separation capabilities of gas chromatography with the identification and quantification abilities of mass spectrometry to detect, identify, and quantify individual components within complex mixtures.
Gas Chromatography-Mass Spectrometry (GC-MS) is a powerful analytical technique that combines the separating power of gas chromatography with the identification capabilities of mass spectrometry. This method is used to separate, identify, and quantify different components in complex mixtures.
In GC-MS, the mixture is first vaporized and carried through a long, narrow column by an inert gas (carrier gas). The various components in the mixture interact differently with the stationary phase inside the column, leading to their separation based on their partition coefficients between the mobile and stationary phases. As each component elutes from the column, it is then introduced into the mass spectrometer for analysis.
The mass spectrometer ionizes the sample, breaks it down into smaller fragments, and measures the mass-to-charge ratio of these fragments. This information is used to generate a mass spectrum, which serves as a unique "fingerprint" for each compound. By comparing the generated mass spectra with reference libraries or known standards, analysts can identify and quantify the components present in the original mixture.
GC-MS has wide applications in various fields such as forensics, environmental analysis, drug testing, and research laboratories due to its high sensitivity, specificity, and ability to analyze volatile and semi-volatile compounds.
"Solid Phase Extraction (SPE) is a method in analytical chemistry where solids coated with specific sorbents are used to selectively extract, concentrate, and clean up target analytes from complex matrices prior to analysis."
Solid-phase extraction (SPE) is a method used in analytical chemistry and biochemistry to extract, separate, or clean up specific components from a complex matrix, such as a biological sample. It involves the use of a solid phase, typically a packed bed of sorbent material, held within a cartridge or column. The sample mixture is passed through the column, and the components of interest are selectively retained by the sorbent while other components pass through.
The analytes can then be eluted from the sorbent using a small volume of a suitable solvent, resulting in a more concentrated and purified fraction that can be analyzed using various techniques such as high-performance liquid chromatography (HPLC), gas chromatography (GC), or mass spectrometry.
The solid phase used in SPE can vary depending on the nature of the analytes and the matrix, with different sorbents offering varying degrees of selectivity and capacity for specific compounds. Commonly used sorbents include silica-based materials, polymeric resins, and ion exchange materials.
Overall, solid-phase extraction is a powerful tool in sample preparation, allowing for the isolation and concentration of target analytes from complex matrices, thereby improving the sensitivity and selectivity of downstream analytical techniques.
Solid-phase microextraction
Introduction to Solid Phase Microextraction Quantification using Solid Phase Microextraction (All articles with unsourced ... Handbook of Solid Phase Microextraction, Chemical Industry Press, 2009. Pawliszyn J.: Solid Phase Microextraction: Theory and ... Solid phase microextraction, or SPME, is a solid phase extraction sampling technique that involves the use of a fiber coated ... Vas, György; Vékey, Károly (2004). "Solid-phase microextraction: a powerful sample preparation tool prior to mass spectrometric ...
Cork taint
Wine portal Alternative wine closure Flavor scalping Wine fault Marsili, R. (2000). "Solid-Phase Microextraction: Food ... The use of chlorine or other halogen-based sanitizing agents is being phased out of the wine industry in favor of peroxide or ...
2,4,6-Trichloroanisole
"Solid-Phase Microextraction: Food Technology Applications". In Wilson, Ian D. (ed.). Encyclopedia of Separation Science. New ... "Solid-Phase Microextraction: Food Technology Applications". In Wilson, Ian D. (ed.). Encyclopedia of Separation Science. New ...
2-Methyl-1-butanol
"Truffle Aroma Characterization by Headspace solid-phase microextraction". Journal of Chromatography A. 1017 (1-2): 207-214. doi ... "Identification of Volatile Compounds in Cantaloupe at Various Developmental Stages Using Solid Phase Microextraction". Journal ...
Insect pheromones
... solid-phase microextraction is suitable. For identification, the extracts or the solid-phase microextraction samples are ... Alternatively, the pheromone is adsorbed on activated carbon from the gas phase and an extract is obtained with little solvent ...
Nanoremediation
Nanostructured sorbents for solid phase microextraction and environmental assay. In: Karn, B.; Masciangioli, T.; Zhang, W.; ... this method is referred to as solid-phase microextraction. With their high reactivity and large surface area, nanoparticles may ... be effective sorbents to help concentrate target contaminants for solid-phase microextraction, particularly in the form of self ... Other methods remain in research phases. Nanoremediation has been most widely used for groundwater treatment, with additional ...
Timeline of Polish science and technology
Janusz Pawliszyn, Polish chemist, inventor of solid-phase microextraction (SPME). Andrzej Tarkowski, Polish embryologist and ... Sylwester Porowski, Polish physicist specializing in solid-state and high pressure physics. In 2001, he led a team of Polish ... In 1891, he also created a three-phase transformer and short-circuited (squirrel-cage) induction motor. Joseph Babinski, a ... Mikhail Dolivo-Dobrovolsky, Polish-Russian engineer and electrician; inventor of the three-phase electric power system. ...
SPME
... may refer to : Solid Phase Microextraction Airport code for Cap. FAP Pedro Canga Rodríguez Airport in Peru. This ...
Stephen G. Weber
They have developed thin films for solid-phase micro extraction (SPME). Weber develops electrochemical detectors for use with ...
Fido explosives detector
"Analysis of Explosives in Soil Using Solid Phase Microextraction and Gas Chromatography". Analytical Letters. 39 (7): 1463-1474 ... At the time, the use of fluorescent polymers in their solid state was difficult due to their significantly decreased ... Unlike most fluorescent quenching explosive sensors, the device did not require solid-state lasers and was not as tightly ...
Sultana (grape)
"Determination of Volatile Compounds in Sultaniye Wine by Solid-Phase Microextraction Techniques". Chemistry of Natural ...
Analytical thermal desorption
Solid-phase microextraction - This is based on adsorption of analytes onto a polymer-coated fibre or cartridge. The small ... Vas, G.; Vékey, K. (2004). "Solid-phase microextraction: a powerful sample preparation tool prior to mass spectrometric ... Direct desorption - This is used for sampling emissions from small pieces of solid or semi-solid materials. The material is ... MDHS 80, Laboratory method using diffusive solid sorbent tubes, thermal desorption and gas chromatography, UK Health & Safety ...
Digital microfluidics
"A digital microfluidic interface between solid-phase microextraction and liquid chromatography-mass spectrometry". Journal of ... Wijethunga PA, Nanayakkara YS, Kunchala P, Armstrong DW, Moon H (March 2011). "On-chip drop-to-drop liquid microextraction ... one containing the analyte in aqueous phase, and the other an immiscible ionic liquid are present on the electrode array. The ...
Haloxazolam
Guan F, Seno H, Ishii A, Watanabe K, Kumazawa T, Hattori H, Suzuki O (1999). "Solid-phase microextraction and GC-ECD of ... "Simultaneous determination of twelve benzodiazepines in human serum using a new reversed-phase chromatographic column on a 2- ...
2-Methylisoborneol
Solid-Phase Microextraction". Journal of Agricultural and Food Chemistry. 47 (1): 164-169. doi:10.1021/jf980419x. PMID 10563866 ...
Jennifer S. Brodbelt
Reyzer, Michelle L; Brodbelt, Jennifer S (2001-06-01). "Analysis of fire ant pesticides in water by solid-phase microextraction ... Hall, Brad J; Brodbelt, Jennifer S (1997-08-15). "Determination of barbiturates by solid-phase microextraction (SPME) and ion ... "Determination of benzophenone-3 and metabolites in water and human urine by solid-phase microextraction and quadrupole ion trap ... "Determination of Cannabinoids in Water and Human Saliva by Solid-Phase Microextraction and Quadrupole Ion Trap Gas ...
Paul L. Edmiston
Preferential Extraction of Hydrocarbons from Fire Debris Samples by Solid Phase Microextraction. Journal of Forensic Sciences. ... J Non-Crystalline Solids, 351, 3174-3178 (2005). Jourden, M. J.*; Geiss, P.*; Thomenius, M. J.*; Horst, L. A.*; Barty, M. M.*; ... Selective Detection of Gas-Phase TNT by Integrated Optical Waveguide Spectrometry Using Molecularly Imprinted Sol-Gel Sensing ...
Nicotiana tabacum
Slaghenaufi D, Perello MC, Marchand-Marion S, Tempere S, de Revel G (February 2014). "Quantitative solid phase microextraction ... determination of tobacco minor alkaloids and tobacco-specific nitrosamines in mainstream smoke by dispersive solid-phase ...
Myrcene
"Use of hydrodistillation and headspace solid-phase microextraction to characterize the volatile composition of different hop ...
Hand sanitizer
"Monitoring the photochemical degradation of triclosan in wastewater by UV light and sunlight using solid-phase microextraction ...
Phenylpiracetam
Kim S, Park JH, Myung SW, Lho DS (November 1999). "Determination of carphedon in human urine by solid-phase microextraction ...
Vinyl formate
"Characterization of volatile compounds in fermented milk using solid-phase microextraction methods coupled with gas ...
Butyltin trichloride
"Organotin speciation in French brandies and wines by solid-phase microextraction and gas chromatography-Pulsed flame ...
Α-Cadinol
Yang, Y; Xiao, Y; Liu, B; Fang, X; Yang, W; Xu, J (2011). "Comparison of headspace solid-phase microextraction with ...
Oxytocin
Moriyama E, Kataoka H (2015-06-30). "Automated Analysis of Oxytocin by On-Line in-Tube Solid-Phase Microextraction Coupled with ... of female mice resulted in loss of social interest in male mice during the sexually receptive phase of the estrous cycle. ...
Theories of general anaesthetic action
"Solid phase microextraction as a tool to determine membrane/water partition coefficients and bioavailable concentrations in in ... More recent techniques with super resolution imaging show that the anesthetics do not overcome phase separation-the phase ... Jain, Mahendra K.; Yen-Min Wu, Nora; Wray, Lewis V. (1975). "Drug-induced phase change in bilayer as possible mode of action of ... Nonetheless the concept of proteins moving between phase separated lipids in response to anesthetic has now been shown to be ...
Volatile organic compound
... depending on the analytical techniques to be employed.Solid-phase microextraction (SPME) techniques are used to collect VOCs at ... "Identification of volatile organic compounds emitted by a naturally aged book using solid-phase microextraction/gas ...
Histamine
Vuckovic D, Pawliszyn J (March 2011). "Systematic evaluation of solid-phase microextraction coatings for untargeted metabolomic ...
Air pollution measurement
"Analysis of sulfur-containing compounds in ambient air using solid-phase microextraction and gas chromatography with pulsed ... In urban environments, it can contain many components, notably solid and liquid particulates (such as soot from engines and fly ...
Solid-phase extraction
Solid-phase microextraction (SPME), is a solid phase extraction technique that involves the use of a fiber coated with an ... Analytical laboratories use solid phase extraction to concentrate and purify samples for analysis. Solid phase extraction can ... Solid-phase extraction (SPE) is a solid-liquid extractive technique, by which compounds that are dissolved or suspended in a ... A stationary phase of polar functionally bonded silicas with short carbons chains frequently makes up the solid phase. This ...
Solid-phase microextraction - Wikipedia
Introduction to Solid Phase Microextraction Quantification using Solid Phase Microextraction (All articles with unsourced ... Handbook of Solid Phase Microextraction, Chemical Industry Press, 2009. Pawliszyn J.: Solid Phase Microextraction: Theory and ... Solid phase microextraction, or SPME, is a solid phase extraction sampling technique that involves the use of a fiber coated ... Vas, György; Vékey, Károly (2004). "Solid-phase microextraction: a powerful sample preparation tool prior to mass spectrometric ...
ISO 27108:2010 - Water quality - Determination of selected plant treatment agents and biocide products - Method using solid...
Method using solid-phase microextraction (SPME) followed by gas chromatography-mass spectrometry (GC-MS) ... Method using solid-phase microextraction (SPME) followed by gas chromatography-mass spectrometry (GC-MS). Status : Published ( ... ground water and surface water by solid‑phase microextraction (SPME) followed by gas chromatography-mass spectrometry (GC‑MS). ...
PRIME PubMed | Solid-phase microextraction for gas chromatographic/mass spectrometric analysis of dimethoate in human...
Solid-phase microextraction for gas chromatographic/mass spectrometric analysis of dimethoate in human biological samples. ... Solid-phase microextraction for gas chromatographic/mass spectrometric analysis of dimethoate in human biological samples.. ... "Solid-phase Microextraction for Gas Chromatographic/mass Spectrometric Analysis of Dimethoate in Human Biological Samples." ... Solid-phase microextraction for gas chromatographic/mass spectrometric analysis of dimethoate in human biological samples. ...
Erowid.org: Erowid Reference 695 : Rapid analysis of amphetamine, methamphetamine, MDA, and MDMA in urine using solid-phase...
... and MDMA in urine using solid-phase microextraction, direct on-fiber derivatization, and analysis by GC-MS J Anal Toxicol 2000 ... "Rapid analysis of amphetamine, methamphetamine, MDA, and MDMA in urine using solid-phase microextraction, direct on-fiber ... and MDMA in urine using solid-phase microextraction, direct on-fiber derivatization, and analysis by GC-MS" J Anal Toxicol. ... in urine was developed using solid-phase microextraction (SPME) and gas chromatography-mass spectrometry (GC-MS) in the ...
"Advances in solid phase microextraction for the analysis of volatile c" by William D Kranz
In a series of research projects, solid phase microextraction was employed for the analysis of explosives, commercial tire ... Solid phase microextraction is a powerful and versatile technique, well-suited to the analysis of numerous samples of forensic ... Solid phase microextraction is a powerful and versatile technique, well-suited to the analysis of numerous samples of forensic ... Advances in solid phase microextraction for the analysis of volatile compounds in explosives, tire treatments, and ...
Detection of Molecular Markers for the Identification of Gunshot Residues by Solid Phase Micro Extraction - Gas Chromatography...
Use of direct immersion solid-phase microextraction on polyacrylate and polydimethylsiloxane stationary phases for simultaneous...
Two absorption type stationary phases: polydimethylsiloxane (PDMS) and polyacrylate (PA) have been found to be most effective ... indicates the very high applicability of these stationary phases for determination of carbamazepine, clomipramine, ... Direct immersion solid-phase microextraction has been optimized and applied to the simultaneous determination of the neutral ... Use of direct immersion solid-phase microextraction on polyacrylate and polydimethylsiloxane stationary phases for simultaneous ...
Capturing Plant Metabolome with Direct-Immersion in Vivo Solid Phase Microextraction of Plant Tissues
For the first time, an in vivo sampling mode of direct immersion-solid phase microextraction (DI-SPME) was employed to capture ... Capturing Plant Metabolome with Direct-Immersion in Vivo Solid Phase Microextraction of Plant Tissues. ... Capturing Plant Metabolome with Direct-Immersion in Vivo Solid Phase Microextraction of Plant Tissues. UWSpace. http://hdl. ... The feasibility of this sampling approach, based on exploitation of microextraction principles, including negligible depletion ...
Quantification of trace volatile sulfur compounds in milk by solid-phase microextraction and gas chromatography-pulsed flame...
Quantification of trace volatile sulfur compounds in milk by solid-phase microextraction and gas chromatography-pulsed flame ... Quantification of trace volatile sulfur compounds in milk by solid-phase microextraction and gas chromatography-pulsed flame ... Quantification of trace volatile sulfur compounds in milk by solid-phase microextraction and gas chromatography-pulsed flame ... thiols were stabilized and the volatile sulfur compounds in milk were extracted by headspace solid-phase microextraction, and ...
Analysis of biological samples using solid-phase microextraction - University of Regensburg Publication Server
Solid phase microextraction
... , or SPME, is a sample preparation technique used both in the laboratory and on-site. Developed ... Solid Phase Microextraction: theory and practice, Wiley-VCH, 1997 *Pawlisyzn J.: Applications of Solid Phase Microextraction, ... Solid phase microextraction, or SPME, is a sample preparation technique used both in the laboratory and on-site. Developed in ... It uses material from the Wikipedia article "Solid_phase_microextraction". A list of authors is available in Wikipedia. ...
solid-phase microextraction - Chemistry Notes
Microextraction of essential oils: A review
... and solid phase microextraction (SPME) are popular extraction techniques for sample preparation due to their green and highly ... Liquid phase microextraction (LPME) and solid phase microextraction (SPME) are popular extraction techniques for sample ... attention has been focused on the up-to-date research works and applications based on liquid and solid phase microextraction ... Microextraction of essential oils: A review J Chromatogr A. 2023 Oct 11:1708:464357. doi: 10.1016/j.chroma.2023.464357. Epub ...
Solid Phase Micro Extraction (SPME)
Characterization of Livestock Odors Using Steel Plates, Solid Phase Microextraction, and Multidimensional-Gas Chromatography...
Headspace solid phase microextraction (SPME) was used to extract characteristic odorants collected on the plates. All analyses ... Headspace solid phase microextraction (SPME) was used to extract characteristic odorants collected on the plates. All analyses ... Characterization of Livestock Odors Using Steel Plates, Solid Phase Microextraction, and Multidimensional-Gas Chromatography- ... Characterization of Livestock Odors Using Steel Plates, Solid Phase Microextraction, and Multidimensional-Gas Chromatography- ...
Introduction and Review of Techniques Applications and Limitations of Solid Phase Microextraction Method - Journal of Health...
Solid phase microextraction (SPME) is a sub-sample extraction method that has been developed to solve some of the challenges ... Solid phase microextraction (SPME) is a sub-sample extraction method that has been developed to solve some of the challenges ... Introduction and Review of Techniques, Applications, and Limitations of Solid Phase Microextraction Method ... and Limitations of Solid Phase Microextraction Method. HSR 2023; 19 (1) :12-22. URL: http://hsr.mui.ac.ir/article-1-1379-en. ...
Preparation of novel fiber coatings for solid phase microextraction of flavonoids
The last solid phase microextraction coating is molecularly imprinted silica. In this case, a sol-gel process was used to ... In this study, three different types of solid phase microextraction (SPME) coatings were produced. The first one is baicalin- ... Functionalized silica fibers were utilized in solid phase microextraction of apigenin, apigetrin, eriodictyol, isoquercitrin, ...
Coupling of Solid-Phase Microextraction and Capillary Isoelectric Focusing with Laser-Induced Fluorescence Whole Column Imaging...
CODEX-compliant eleven organophosphorus pesticides screening in multiple commodities using headspace-solid phase...
Analysis of Terpenes in Cannabis Using Headspace Solid-Phase Microextraction and GC-MS
Headspace solid-phase microextraction (HS-SPME) offers a low cost and easy alternative to traditional headspace methods. It has ... In this work, headspace solid-phase microextraction (HS-SPME) was used to identify and quantify terpene content in cannabis. ... Analysis of Terpenes in Cannabis Using Headspace Solid-Phase Microextraction and GC-MS. ...
How to Analyze Flavor Using SPME (Solid Phase Micro Extraction) and Solvent Extraction
Sorptive extraction also called Solid Phase Micro Extraction (SPME) has an adsorbent coated in inert fiber which is placed in ... How to Analyze Flavor Using SPME (Solid Phase Micro Extraction) and Solvent Extraction. ... 2] https://www.researchgate.net/publication/287974185_Solid_Phase_Microextraction_SPME_Method_Development_in_Analysis_of_ ...
Electropolymerized Pyrrole-Based Conductive Polymeric Ionic Liquids and Their Application for Solid-Phase Microextraction
Analysis of Chlorophenols in Water by Solid-Phase Microextraction and GC-MS
| Chemické listy
Analysis of Chlorophenols in Water by Solid-Phase Microextraction and GC-MS Autoři. * K. Jursikova Department of Water ... Jursikova, K., & Janda, V. (2000). Analysis of Chlorophenols in Water by Solid-Phase Microextraction and GC-MS. Chemické Listy ... The method is based on direct acetylation of chlorophenols, solid-phase microextraction of chlorophenyl acetates using poly( ...
CICECO Publication » Expanding the Applicability of Poly(Ionic Liquids) in Solid Phase Microextraction: Pyrrolidinium Coatings
... and tested as solid phase microextraction (SPME) sorbents. A series of Pyrr-PILs bearing three different alkyl side chain ... Poly(ionic liquids) in solid phase microextraction: Recent advances and perspectives Patinha, DJS; Silvestre, AJD; Marrucho, IM ... Expanding the Applicability of Poly(Ionic Liquids) in Solid Phase Microextraction: Pyrrolidinium Coatings. ... and tested as solid phase microextraction (SPME) sorbents. A series of Pyrr-PILs bearing three different alkyl side chain ...
Application of Solid-Phase Microextraction in the Determination of Diazepam Binding to Human Serum Albumin
CICECO Publication » Poly(ionic liquid) embedded particles as efficient solid phase microextraction phases of polar and...
Quantitative Analysis of Menthol in Human Urine Using Solid Phase Microextraction and Stable Isotope Dilution Gas...
We used solid phase microextraction (SPME) headspace sampling for collection, preconcentration and automation. Conjugated forms ... Title : Quantitative Analysis of Menthol in Human Urine Using Solid Phase Microextraction and Stable Isotope Dilution Gas ... 2016). Quantitative Analysis of Menthol in Human Urine Using Solid Phase Microextraction and Stable Isotope Dilution Gas ... Quantitative Analysis of Menthol in Human Urine Using Solid Phase Microextraction and Stable Isotope Dilution Gas ...
Volatile Composition Variability of Arnica montana Wild Populations of Trentino-Alto Adige, Italy, Determined by Headspace...
... were characterized using Headspace-Solid Phase Microextraction analysis for their volatile profile. Fifty-one compounds were ... were characterized using Headspace-Solid Phase Microextraction analysis for their volatile profile. Fifty-one compounds were ... Determined by Headspace-Solid Phase Microextraction ... Determined by Headspace-Solid Phase Microextraction ... Determined by Headspace-Solid Phase Microextraction ... Determined by Headspace-Solid Phase Microextraction ...
Headspace solid-phase microextraction sampling of endogenous aldehydes in biological fluids using a magnetic metal-organic...
Headspace solid-phase microextraction sampling of endogenous aldehydes in biological fluids using a magnetic metal-organic ... Headspace solid-phase microextraction sampling of endogenous aldehydes in biological fluids using a magnetic metal-organic ... to prepare a solid‐phase microextraction fiber. It was coupled with gas chromatography‐flame ionization detection and employed ...
SPMEChromatography-massExtracted by headspace solid-phase microextrHeadspace solid-phase micro extractionMicro ExtractionExtractionVolatileAnalysisImmersionPawliszynVOLATILESWastewaterDeterminationAdvancesCompoundsResearchWikipediaMicro-ExtractionFibersFiberPolycyclic aromatic hydChromatography-Mass SpectrometryCompoundsHeadspace solidCapillarySolventFreshlyCoatingsOrganicContaminantsCarbowaxThin filmStationary phaseMethodLiquidSampleFoodDirectlyJournalExposureUnique
SPME28
- Solid phase microextraction, or SPME, is a solid phase extraction sampling technique that involves the use of a fiber coated with an extracting phase, that can be a liquid (polymer) or a solid (sorbent), which extracts different kinds of analytes (including both volatile and non-volatile) from different kinds of media, that can be in liquid or gas phase. (wikipedia.org)
- ISO 27108:2010 specifies a method for the determination of the dissolved amount of selected plant treatment agents and biocide products in drinking water, ground water and surface water by solid‑phase microextraction (SPME) followed by gas chromatography-mass spectrometry (GC‑MS). The limit of determination depends on the matrix, on the specific compound to be analysed and on the sensitivity of the mass spectrometer. (iso.org)
- A rapid, sensitive, and solvent-free procedure for the simultaneous determination of amphetamine, methamphetamine, 3,4-methylenedioxyamphetamine (MDA), and 3,4-methylenedioxymethamphetamine (MDMA) in urine was developed using solid-phase microextraction (SPME) and gas chromatography-mass spectrometry (GC-MS) in the selected ion monitoring mode. (erowid.org)
- For the first time, an in vivo sampling mode of direct immersion-solid phase microextraction (DI-SPME) was employed to capture the metabolome of living plant specimens, using apple (Malus × domestica Borkh. (uwaterloo.ca)
- Solid-phase microextraction (SPME) has gained widespread acceptance for analyte-matrix separation and preconcentration. (uni-regensburg.de)
- Solid phase microextraction , or SPME , is a sample preparation technique used both in the laboratory and on-site. (chemeurope.com)
- SPME is a fibre coated with an extracting phase, that can be a liquid ( polymer ) or a solid ( sorbent ), which extracts different kinds of analytes, from volatile to non-volatile, from different kinds of means, that can be in liquid or gas phase. (chemeurope.com)
- Liquid phase microextraction (LPME) and solid phase microextraction (SPME) are popular extraction techniques for sample preparation due to their green and highly efficient single-step extraction efficiency. (nih.gov)
- Solid Phase Micro Extraction (SPME) is a widely used technique for extraction and concentration of VOCs and SVOCs combined with GC/MS. Unique to absorption techniques for GC, SPME is suited for both small and larger molecules, and the absorption may take place in either the headspace or liquid. (msconsult.dk)
- Headspace solid phase microextraction (SPME) was used to extract characteristic odorants collected on the plates. (iastate.edu)
- Solid phase microextraction (SPME) is a sub-sample extraction method that has been developed to solve some of the challenges associated with sample preparation as well as to integrate different stages of analysis into one system. (ac.ir)
- In this study, three different types of solid phase microextraction (SPME) coatings were produced. (iyte.edu.tr)
- Sorptive extraction also called Solid Phase Micro Extraction (SPME) has an adsorbent coated in inert fiber which is placed in the headspace of the sample and adsorbs the volatile compound. (ptmitraayu.com)
- In this work, headspace solid-phase microextraction (HS-SPME) was used to identify and quantify terpene content in cannabis. (cannabissciencetech.com)
- Headspace solid-phase microextraction (HS-SPME) offers a low cost and easy alternative to traditional headspace methods. (cannabissciencetech.com)
- Crosslinked pyrrolidinium-based poly(ionic liquids) (Pyrr-PILs) were synthesized through a fast, simple, and solventless photopolymerization scheme, and tested as solid phase microextraction (SPME) sorbents. (ua.pt)
- 1997) and are based on solvent extraction or solid phase microextraction (SPME). (cdc.gov)
- To mitigating the serious threat of harmful volatile substances to the health of infants , an alternative method of odor evaluation were proposed based on Headspace solid-phase microextraction (HS-SPME) combined with Gas Chromatography-Mass Spectrometry (GC-MS) to discriminate the degree of rancidity of infant formula rice flour (IFRF). (bvsalud.org)
- The composition of volatiles emitted by neem seed ( Azadirachta indica L.) and its cake obtained after extraction of oil was analyzed by headspace solid-phase micro extraction (HS-SPME) combined with gas chromatography and gas chromatography- mass spectrometry (GC-MS). Major differences were found in the volatile composition of seed and cake. (upt.ro)
- A series of novel ionic liquids (1-(3-aminopropyl)-3-vinyl imidazolium bromide/tetrafluoroborate) grafted onto graphene oxide- coated stainless-steel wires by a sol-gel technique were fabricated and used as solid-phase microextraction (SPME) fibers for the determination of phthalate esters (PAEs) in water and coffee by a direct immersion-SPME-gas chromatography-mass spectrometry (DI-SPME-GC-MS) method. (deu.edu.tr)
- Recently, head-space solid-phase microextraction (HS-SPME) has been proposed as an alternative for determining 13 C/ 12 C. The aim of this study was to develop a method to analyse 2 H/ 1 H in vanillin using SPME-GC-IRMS for the first time, by testing different operating conditions and comparing the results with those obtained after solvent extraction. (unitn.it)
- In the present study, for the first time, a reliable solid-phase microextraction-gas chromatography-mass spectrometry (SPME-GC-MS) method was developed and validated for the ultra-trace analysis of MF released in growth medium by Daphnia pulex maintained in presence of crowding w/o MK801, a putative upstream inhibitor of MF endogenous production. (unipr.it)
- The aim of this work was to address this issue by evaluating automated solid phase micro-extraction (SPME) combined on line with gas chromatography-electron capture negative ionization mass spectrometry (GC/ECNI-MS). Fiber polymer, extraction mode, ionic strength, extraction temperature and time were the most significant thermodynamic and kinetic parameters studied. (univ-amu.fr)
- Characterization of agarwood incense using gas chromatography - mass spectrometry (GC-MS) coupled with solid phase micro extraction (SPME) and gas chromatography - flame ionization detector (GC-FID) / Nurlaila Ismail … [et al. (uitm.edu.my)
- This paper presents the application of Solid Phase Micro Extraction (SPME) coupled with Gas Chromatography-Mass Spectrometry (GC-MS) and Gas Chromatography-Flame Ionization Detector (GC-FID) to characterize agarwood incense. (uitm.edu.my)
- Solid-phase microextraction (SPME) is a well-known sampling and sample preparation technique used for a wide variety of analytical applications. (uwaterloo.ca)
- Solid-phase microextraction fibers (SPME) were used for sampling the terpenes and the 2-butanone formation from the hydroxyl reaction with 2-butanol as a measure of OH yields. (cdc.gov)
- Solid Phase Microextraction (SPME) is a sampling technique that uses a thin polymer fiber with a hydrophobic coating. (cdc.gov)
Chromatography-mass4
- A new, simple and rapid procedure for the determination of dimethoate in urine and blood samples was developed using direct immersion solid-phase microextraction and gas chromatography/mass spectrometry. (unboundmedicine.com)
- Title : Quantitative Analysis of Menthol in Human Urine Using Solid Phase Microextraction and Stable Isotope Dilution Gas Chromatography/Mass Spectrometry Personal Author(s) : Huang, Wenlin;Blount, Benjamin C.;Watson, Clifford H.;Watson, Christina;Chambers, David M. (cdc.gov)
- Discrimination rancidity degree of infant formula rice flour based on Headspace Solid-Phase Microextraction combined with Gas Chromatography-Mass Spectrometry as an alternative to sensory evaluation. (bvsalud.org)
- Using headspace solid-phase microextraction followed by gas chromatography mass spectrometry, researchers identified 45 volatile compounds, including ketones and aldehydes. (ift.org)
Extracted by headspace solid-phase microextr1
- In this study, reactive thiols were stabilized and the volatile sulfur compounds in milk were extracted by headspace solid-phase microextraction, and analyzed by gas chromatography and pulsed-flame photometric detection. (oregonstate.edu)
Headspace solid-phase micro extraction2
- Headspace Solid Phase Micro Extraction and GC/MS Analysis of the Volatile Components in Seed and Cake of Azadirachta indica A. juss. (upt.ro)
- Owing to the small size, low power, and low gas consumption of DBD-OES as well as efficient extraction of mercury species by porous carbons headspace solid phase micro-extraction, the proposed technique provides several advantages including compactness, cost-effectiveness, and potential to couple with miniature GC to accomplish the field speciation of mercury in rice compared to conventional hyphenated techniques. (canada.ca)
Micro Extraction1
- Factors influencing the quantity of the analytes extracted onto the solid-phase micro-extraction fiber, such as addition of salt, sample pH, extraction time, desorption time, and sample volume, were optimized using solid-phase micro-extraction-HPLC-MS/MS. The results showed that the method gave satisfactory sensitivities and precisions for analyzing sub-part-per-trillion levels of triclosan, triclocarban, and transformation products of triclocarban in samples collected locally. (ntnu.edu.tw)
Extraction2
- Two absorption type stationary phases: polydimethylsiloxane (PDMS) and polyacrylate (PA) have been found to be most effective for extraction of target analytes. (degruyter.com)
- These metabolites are recovered from urine and saliva via extraction, solid phase extraction (SPE), and derivatization with tetrabutylammonium hydroxide before analysis using GC/FPD (Nigg et al. (cdc.gov)
Volatile4
- Quantification of trace volatile sulfur compounds in milk by solid-phase microextraction and gas chromatography-pulsed flame photometric detection. (oregonstate.edu)
- Twelve natural populations of the species from Trentino-Alto Adige, Italy, were characterized using Headspace-Solid Phase Microextraction analysis for their volatile profile. (agri.gov.il)
- Prior to GC-DBD-OES analysis, mercury species were derivatized to their volatile species with NaBPh4 and preconcentrated by headspace solid phase microextraction using porous carbons. (canada.ca)
- 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)
Analysis5
- Solid phase microextraction is a powerful and versatile technique, well-suited to the analysis of numerous samples of forensic interest. (purdue.edu)
- In a series of research projects, solid phase microextraction was employed for the analysis of explosives, commercial tire treatments, and entomological specimens. (purdue.edu)
- The feasibility of this sampling approach, based on exploitation of microextraction principles, including negligible depletion of free analyte concentrations, solventless sampling and sample preparation, and on-site compatibility, was determined in global metabolite analysis. (uwaterloo.ca)
- This is a much-used accessory for the analysis of small aldehydes using the oxime formation by PFPBHA reagent, but may be used for all reagents which react fast in the gas phase, e.g. (msconsult.dk)
- The method is based on direct acetylation of chlorophenols, solid-phase microextraction of chlorophenyl acetates using poly(dimethylsiloxane)-coated fiber and final analysis of the acetates by GC-MS, 4-bromophenol being used as an internal standard. (chemicke-listy.cz)
Immersion1
- Direct immersion solid-phase microextraction has been optimized and applied to the simultaneous determination of the neutral and basic pharmaceuticals: caffeine, carbamazepine, clomipramine, chlorprothixene and clotrimazole at low concentrations in municipal wastewater. (degruyter.com)
Pawliszyn3
- Janusz Pawliszyn: Handbook of Solid Phase Microextraction, Chemical Industry Press, 2009. (wikipedia.org)
- Pawliszyn J.: Solid Phase Microextraction: Theory and Practice, Wiley-VCH, 1997. (wikipedia.org)
- Pawliszyn J.: Applications of Solid Phase Microextraction, Royal Society of Chemistry, 1999. (wikipedia.org)
VOLATILES2
Wastewater1
- The preliminary treatment removes all large and settleable solids from the wastewater. (sigmaaldrich.com)
Determination2
- The high values of distribution coefficient (K fs ) in PDMS/water and PA/water systems (log K fs between 3.05 and 4.23) indicates the very high applicability of these stationary phases for determination of carbamazepine, clomipramine, chlorprothixene and clotrimazole in water samples. (degruyter.com)
- Optimization of solid-phase microextraction conditions for determination of phenols. (novapublishers.com)
Advances1
- In this review, starting from a brief description of the recent advances in the last decade, the attention has been focused on the up-to-date research works and applications based on liquid and solid phase microextraction for essential oil analyses. (nih.gov)
Compounds1
- NIOSH research has shown that when combined with ozone, one of the common components of pine oil cleaners, alpha-terpineol, transforms into many oxygenated organic compounds in both the gas-phase and on surface reactions creating new products potentially harmful to those exposed. (cdc.gov)
Research1
- In this research, a metal‐organic framework/polyaniline magnetite nanocomposite was synthesized and intercalated by polyaniline by electrophoretic deposition on the surface of a thin steel wire, to prepare a solid‐phase microextraction fiber. (edu.au)
Wikipedia1
- It uses material from the Wikipedia article "Solid_phase_microextraction" . (chemeurope.com)
Micro-Extraction3
- Solid Phase Micro-Extraction was used as a solventless means to introduce sufficient mass of sample onto the precolumn of the multi-dimensional system. (gerstel.com)
- A simple dispersive solid phase micro-extraction (DSPME) based on activated carbon (AC) was performed for the determination and separation of carcinogenic polycyclic aromatic hydrocarbons (PAHs), namely phenanthrene and fluoranthene, in selected white, brown and parboiled rice samples. (uthm.edu.my)
- This review will focus specifically on the state-of-the-art sample pre-treatment methods published in the last ten years including liquid and solid phase micro-extraction, and chip-based manifolds that can be coupled to ICP-MS hyphenated techniques. (rsc.org)
Fibers1
- 16] M. Mestres, C. Sala, M.P. Martı́, O. Busto, J. Guasch, Headspace solid-phase microextraction of sulphides and disulphides using Carboxen-polydimethylsiloxane fibers in the analysis of wine aroma, Journal of Chromatography A, 835 (1999) 137-144. (jchemlett.com)
Fiber2
- Constructed a novel unbreakable solid-phase microextraction fiber by electrodeposition of silica sol-gel on gold (combined inorganic chemistry with electrochemistry). (livecareer.com)
- A solventless sample preparation method, invented in 1989, that uses a fused silica fiber which is coated with a stationary phase. (nih.gov)
Polycyclic aromatic hyd2
- E. Psillakis, A. Ntelekos, D. Mantzavinos, E.Nikolopoulos, N.Kalogerakis , "Solid-phase microextraction to monitor the sonochemical degradation of polycyclic aromatic hydrocarbons in water " ,J. Environ. (tuc.gr)
- Vacuum-assisted headspace thin-film microextraction: Theoretical formulation and method optimization for the extraction of polycyclic aromatic hydrocarbons from water samples. (uwaterloo.ca)
Chromatography-Mass Spectrometry1
- Characterization of three agave species by gas chromatography and solid-phase microextraction-gas chromatography-mass spectrometry. (nih.gov)
Compounds5
- Characterization of aroma compounds in apple cider using solvent-assisted flavor evaporation and headspace solid-phase microextraction. (oregonstate.edu)
- Vapor intrusion is the vapor phase migration of volatile organic inorganic compounds into indoor air spaces from contaminated groundwater or soil. (sigmaaldrich.com)
- Some studies have indicated that most of the toxicity of tobacco smoke is due to gas-phase compounds. (nih.gov)
- The kinetics of solid-phase microextraction measured for freshly added and aged hydrophobic compounds in two different soils. (muni.cz)
- NIOSH research has shown that when combined with ozone, one of the common components of pine oil cleaners, alpha-terpineol, transforms into many oxygenated organic compounds in both the gas-phase and on surface reactions creating new products potentially harmful to those exposed. (cdc.gov)
Headspace solid1
- 12. Headspace solid-phase microextraction for the determination of benzene, toluene, ethylbenzene and xylenes in urine. (nih.gov)
Capillary1
- A selectable 1D/2D GC-MS configuration based on Agilent® Technologies capillary flow technology (CFT) and low thermal mass (LTM) GC column modules with dissimilar column phases was used to perform two-dimensional GC analysis of different foodstuffs. (gerstel.com)
Solvent1
- In this study, we used anion supramolecular solvent (SUPRAS) prepared from a mixture of an anionic surfactant, sodium dodecyl sulfate (SDS), and a cationic surfactant, tetrabutylammonium bromide (TBABr), as the extraction solvent in liquid phase microextraction (LPME) of paraquat (PQ) and diquat (DQ). (mdpi.com)
Freshly1
- Solid-phase microextraction analysis of freshly picked young E. sinica and E. foeminea stems revealed the presence of increased benzaldehyde levels in E. foeminea, whereas 1-phenylpropane-1,2-dione was detected only in E. sinica. (nih.gov)
Coatings1
- Polar analytes are attracted to polar phases (e.g., polyacrylate and Carbowax coatings). (sigmaaldrich.com)
Organic1
- Solid phase microextraction of organic pollutants from natural and artificial soils and comparison with bioaccumulation in earthworms. (muni.cz)
Contaminants1
- When measuring air contaminants, investigators must consider not only the sampling method but also the phase and identity of the pollutant or particulate of interest. (sigmaaldrich.com)
Carbowax1
- 15 glycol ethers can be extracted from water by solid-phase microextraction with a carboxen-polydimethylsiloxane and separated by GC a Carbowax column. (hal.science)
Thin film2
- application in thin film solid phase microextraction of anticancer drugs. (bvsalud.org)
- Employing a fused deposition modeling (FDM) 3D printer and polylactic acid (PLA) filament, adsorbent films were designed and produced to be utilized in thin film microextraction. (bvsalud.org)
Stationary phase1
- Polybutylene terephthalate-based stationary phase for for ion-pair-free reversed-phase liquid chromatography of small interfering RNA. (uni-tuebingen.de)
Method1
- Chen, S-H , Device for solid phase microextraction and method for producing the same , Patent No. I385371. (ncku.edu.tw)
Liquid3
- The enriched PQ and DQ in the SUPRAS phase were simultaneously analyzed by ion-pairing reversed-phase high performance liquid chromatography. (mdpi.com)
- The optimal conditions of ILUAE were determined by single factor experiments and Box-Be hnken design as follows: [C 4 mim]Cl concentration of 0.7 mol/L, extraction time of 4 h, liquid-solid ratio of 15:1 mL/g, ultrasonic power of 195 W, the ultrasonication time of 13 min, and extraction temperature of 48℃·min. (scirp.org)
- Samples are mainly prepared by means of liquid-liquid extraction, solid phase extraction, solid phase microextraction, and purge and trap. (epal.pt)
Sample1
- So, the selected 3D printed films with excellent microextraction efficiency have been found to be effective in sample preparation of biological samples. (bvsalud.org)
Food1
- Venskutonis, R , Leitner, E & Kraujalytė, V 2012, ' Chemical and sensory characterisation of aroma of Viburnum opulus fruits by solid phase microextraction-gas chromatography-olfactometry ', Food Chemistry , vol. 132, no. 2, pp. 717-723. (elsevierpure.com)
Directly1
- Profiling of Unsaturated Lipids by Raman Spectroscopy Directly on Solid-Phase Microextraction Probes. (uwaterloo.ca)
Journal1
- Journal of Non-Crystalline Solids, 366, 1-5. (wku.edu)
Exposure1
- 2. Lifestyle and occupational factors affecting exposure to BTEX in municipal solid waste composting facility workers. (nih.gov)
Unique1
- The unique sampler design ensures that both the vapor phase and particulate isocyanates are captured and derivatized during sampling. (sigmaaldrich.com)
