The Experts below are selected from a list of 39903 Experts worldwide ranked by ideXlab platform
Janusz Pawliszyn - One of the best experts on this subject based on the ideXlab platform.
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Solid-Phase Microextraction in metabolomics
TrAC Trends in Analytical Chemistry, 2014Co-Authors: Barbara Bojko, Nathaly Reyes-garcés, Vincent Bessonneau, Krzysztof Goryński, Fatemeh Mousavi, Érica A. Souza Silva, Janusz PawliszynAbstract:Abstract Among all the “-omics” studies, metabolomics currently has the most growth potential. The complexity of the studied matrices demands from the analytical chemist the development of new protocols and the modification of existing methods to obtain a full biochemical image of the sample. In the current review, we discuss the advantages and the disadvantages of Solid-Phase Microextraction based on up-to-date metabolomics studies performed on plants, biofluids, tissues and cell cultures. We place particular emphasis on the development of new extraction Phases in view of the analyte coverage and on the features of the method, which complement solvent-based extraction technologies.
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In vivo Solid-Phase Microextraction for monitoring intravenous concentrations of drugs and metabolites
Nature protocols, 2011Co-Authors: Heather Lord, Xu Zhang, F Marcel Musteata, Dajana Vuckovic, Janusz PawliszynAbstract:In vivo Solid-Phase Microextraction for monitoring intravenous concentrations of drugs and metabolites
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nondestructive sampling of living systems using in vivo Solid Phase Microextraction
Chemical Reviews, 2011Co-Authors: Gangfeng Ouyang, Dajana Vuckovic, Janusz PawliszynAbstract:Nondestructive Sampling of Living Systems Using in Vivo Solid-Phase Microextraction Gangfeng Ouyang,* Dajana Vuckovic, and Janusz Pawliszyn* MOEKeyLaboratory of Aquatic Product Safety/KLGHEI of Environment andEnergyChemistry, School ofChemistry andChemical Engineering, Sun Yat-sen University, Guangzhou 510275, China Department of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
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In vivo sampling with Solid Phase Microextraction.
Journal of biochemical and biophysical methods, 2006Co-Authors: Florin Marcel Musteata, Janusz PawliszynAbstract:This review discusses the most recent developments and future challenges in the application of Solid Phase Microextraction (SPME) for sampling of live biological samples. The emphasis is placed on applications of fiber SPME for analysis of volatile emissions and drugs in biological fluids. The method development section highlights the main parameters that need to be considered in the case of in vivo experiments: extraction techniques, selection of extraction Phases, calibration procedures, determination of free concentrations, and automation.
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Automation of Solid‐Phase Microextraction
Journal of Separation Science, 2005Co-Authors: John W. O’reilly, Qing Wang, Lucie Setkova, Joseph P. Hutchinson, Yong Chen, Heather Lord, Christopher M. Linton, Janusz PawliszynAbstract:This review discusses developments and future challenges in the automation of Solid-Phase Microextraction (SPME). The emphasis of the review is placed on automated SPME-GC using fibre and in-tube configurations, and includes discussion of recent developments that may have significant implications for automation such as superelastic fibre assemblies and internally cooled fibre-SPME. Existing methods used for automated SPME-LC are summarised together with a more detailed overview of recent developments such as using solvent desorption followed by syringe injection using a robotic system. Progress towards automation of other SPME configurations is also discussed. © 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Yadollah Yamini - One of the best experts on this subject based on the ideXlab platform.
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Applications of porous frameworks in Solid-Phase Microextraction.
Journal of separation science, 2021Co-Authors: Mohammad Mahdi Khataei, Yadollah Yamini, Maryam ShamsayeiAbstract:Porous frameworks are a term of attracting Solid materials assembled by interconnection of molecules and ions. These trendy materials due to high chemical and thermal stability, well-defined pore size and structure, and high effective surface area gained attention to employ as extraction Phase in sample pretreatment methods before analytical analysis. Solid-Phase Microextraction is an important subclass of sample preparation technique that up to now different configurations of this method have been introduced to get adaptable with different environments and analytical instruments. In this review, theoretical aspect and different modes of Solid-Phase Microextraction method are investigated. Different classes of porous frameworks and their applications as extraction Phase in the proposed Microextraction method are evaluated. Types and features of supporting substrates and coating procedures of porous frameworks on them are reviewed. At the end, the prospective and the challenges ahead in this field are discussed.
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Application of magnetic nanomaterials in magnetic in-tube Solid-Phase Microextraction.
Talanta, 2020Co-Authors: Meysam Safari, Yadollah YaminiAbstract:Abstract Development of magnetic nanomaterials has greatly promoted the innovation of in-tube Solid-Phase Microextraction. This review article gives an insight into recent advances in the modifications and applications of magnetic nanomaterials for in-tube Solid-Phase Microextraction. Also, different magnetic nanomaterials which have recently been utilized as in-tube Solid-Phase Microextraction sorbents are classified. This study shows that magnetic nanomaterials have gained significant attention owing to large specific surface area, selective absorption, and surface modification. Magnetic in-tube Solid-Phase Microextraction has been applied for the analysis of food samples, biological, and environmental. However, for full development of magnetic in-tube SPME, effort is still needed to overcome limitations, such as mechanical stability, selectivity and low extraction efficiency. To achieve these objectives, research on magnetic in-tube SPME is mainly focused in the preparation of new extractive Phases.
Ralph E. Sturgeon - One of the best experts on this subject based on the ideXlab platform.
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Trace element speciation using Solid Phase Microextraction
Spectrochimica Acta Part B: Atomic Spectroscopy, 2005Co-Authors: Zoltán Mester, Ralph E. SturgeonAbstract:An initial review of research targeting applications of Solid Phase Microextraction for organometallic speciation, published in 2001, encompassed literature from the early days of Solid Phase Microextraction up to June 2000. In this article, the reader will find a compilation and discussion of relevant literature published from June 2000 to December 2004. Because of the maturity of the technique, only a brief overview of the measurement principles is presented. The major thrust of the article highlights applications of Solid Phase Microextraction to the fields of elemental and organometallic analyses. In contrast to the earlier review, applications related to the determination of phosphorus-, sulfur-, bromine-, chlorine- and iodine-containing compounds have also been included for those cases where the target of the determination is the element or a specific molecule containing the element for which atomic spectroscopy has been advocated as a detection technique. Additionally, other Microextraction techniques are also considered, including stirbar sorptive extraction and single droplet Microextraction.
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Solid Phase Microextraction as a tool for trace element speciation
Spectrochimica Acta Part B: Atomic Spectroscopy, 2001Co-Authors: Zoltán Mester, Ralph E. Sturgeon, Janusz PawliszynAbstract:Abstract Applications of Solid Phase Microextraction (SPME) for trace element speciation are reviewed. Because of the relative novelty of the technique in the inorganic analytical field, the first part of this review provides a short overview of the principles of SPME operation; the second part describes typical SPME applications to elemental speciation. Volatile organometallic compounds can be collected by SPME from the sample headspace or liquid Phase, directly or after derivatization. The usual separation method for the collected volatile species is gas chromatography. Non-volatile analyte species can be collected from the sample liquid Phase and separated by liquid chromatography or capillary electrophoresis. Currently, most SPME applications in the inorganic field comprise analyte ethylation and headspace extraction followed by gas chromatographic separation of tin, lead and mercury species. The use of SPME for the study of equilibria in complex systems is also discussed and future roles of Solid Phase Microextraction in the inorganic analytical field are raised.
Zoltán Mester - One of the best experts on this subject based on the ideXlab platform.
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Trace element speciation using Solid Phase Microextraction
Spectrochimica Acta Part B: Atomic Spectroscopy, 2005Co-Authors: Zoltán Mester, Ralph E. SturgeonAbstract:An initial review of research targeting applications of Solid Phase Microextraction for organometallic speciation, published in 2001, encompassed literature from the early days of Solid Phase Microextraction up to June 2000. In this article, the reader will find a compilation and discussion of relevant literature published from June 2000 to December 2004. Because of the maturity of the technique, only a brief overview of the measurement principles is presented. The major thrust of the article highlights applications of Solid Phase Microextraction to the fields of elemental and organometallic analyses. In contrast to the earlier review, applications related to the determination of phosphorus-, sulfur-, bromine-, chlorine- and iodine-containing compounds have also been included for those cases where the target of the determination is the element or a specific molecule containing the element for which atomic spectroscopy has been advocated as a detection technique. Additionally, other Microextraction techniques are also considered, including stirbar sorptive extraction and single droplet Microextraction.
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Solid Phase Microextraction as a tool for trace element speciation
Spectrochimica Acta Part B: Atomic Spectroscopy, 2001Co-Authors: Zoltán Mester, Ralph E. Sturgeon, Janusz PawliszynAbstract:Abstract Applications of Solid Phase Microextraction (SPME) for trace element speciation are reviewed. Because of the relative novelty of the technique in the inorganic analytical field, the first part of this review provides a short overview of the principles of SPME operation; the second part describes typical SPME applications to elemental speciation. Volatile organometallic compounds can be collected by SPME from the sample headspace or liquid Phase, directly or after derivatization. The usual separation method for the collected volatile species is gas chromatography. Non-volatile analyte species can be collected from the sample liquid Phase and separated by liquid chromatography or capillary electrophoresis. Currently, most SPME applications in the inorganic field comprise analyte ethylation and headspace extraction followed by gas chromatographic separation of tin, lead and mercury species. The use of SPME for the study of equilibria in complex systems is also discussed and future roles of Solid Phase Microextraction in the inorganic analytical field are raised.
G.j. De Jong - One of the best experts on this subject based on the ideXlab platform.
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Multiple Solid-Phase Microextraction of drugs from human urine
Chromatographia, 2002Co-Authors: E. H. M. Koster, I.s Niemeijer, G.j. De JongAbstract:The applicability of multiple Solid-Phase Microextraction to the analysis of biological samples has been shown by extraction of a variety of compounds from human urine. Multiple Solid-Phase Microextraction, in which extraction and desorption are repeated and analytes are collected at the head of the separation system before starting the analysis, has been combined with gas chromatography. Amphetamine, lidocaine, procaine, and mepivacaine were extracted from buffered urine by direct immersion of a 100-μm polydimethylsiloxane-coated fiber, to demonstrate that multiple SPME can be used for analytes with different extraction behavior. Multiple Solid-Phase Microextraction was optimized for high extraction yield or short extraction time. For example, the total sample-handling time (extraction plus desorption) for the extraction of mepivacaine from urine can be reduced from approximately 60 min (one extraction) to 33 min (three extractions) without reducing extraction yield. In addition, the extraction yield for mepivacaine can be increased from 14.6% (one extraction) to 27.0% (five extractions) within the same total sample handling time of approximately 60 min. A good match between theoretical and experimental values was obtained. Chromatograms are shown to illustrate the usefulness of the procedure.
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Multiple Solid-Phase Microextraction.
Journal of chromatography. A, 2000Co-Authors: E. H. M. Koster, G.j. De JongAbstract:Theoretical aspects of multiple Solid-Phase Microextraction are described and the principle is illustrated with the extraction of lidocaine from aqueous solutions. With multiple extraction under non-equilibrium conditions considerably less time is required in order to obtain an extraction yield that is equal to that of one extraction at equilibrium. On the other side, the extraction yield can be increased if multiple extraction is performed with the same total time as is needed for one extraction at equilibrium time. The effect of multiple extraction is strongly dependent on the value of the partition constant and for practical use the length of the desorption time is important. A good agreement between theoretical and experimental data has been obtained. Chromatograms are presented showing the potential of multiple Solid-Phase Microextraction.