Results 181 to 190 of about 37,813 (234)
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Thin-film microextraction offers another geometry for solid-phase microextraction
TrAC - Trends in Analytical Chemistry, 2012Abstract As a new geometry for solid-phase microextraction, thin-film microextraction (TFME) has become an attractive sample-preparation technique. The high surface area-to-volume ratio together with the increase of extraction-phase volume enhanced the sensitivity of this technique without sacrificing the sampling time compared to other ...
Ruifen Jiang, Janusz Pawliszyn
exaly +2 more sources
TrAC - Trends in Analytical Chemistry, 2010
Abstract The development of faster, simpler, inexpensive and more environmentally-friendly sample-preparation techniques is an important issue in chemical analysis. Recent research trends involve miniaturization of the traditional liquid-liquid-extraction principle by greatly reducing the acceptor-to-donor ratio.
Amirhassan Amiri, Ali Sarafraz-Yazdi
exaly +2 more sources
Abstract The development of faster, simpler, inexpensive and more environmentally-friendly sample-preparation techniques is an important issue in chemical analysis. Recent research trends involve miniaturization of the traditional liquid-liquid-extraction principle by greatly reducing the acceptor-to-donor ratio.
Amirhassan Amiri, Ali Sarafraz-Yazdi
exaly +2 more sources
TrAC - Trends in Analytical Chemistry, 2018
Abstract After its introduction just over twenty years ago, single-drop microextraction (SDME) became a widely applied solvent-based microextraction procedure as a practical sample preparation tool in support of chemical and biological, food, pharmaceutical, clinical and forensic analysis.
Chanbasha Basheer, Wei Shen, Sheng Tang
exaly +2 more sources
Abstract After its introduction just over twenty years ago, single-drop microextraction (SDME) became a widely applied solvent-based microextraction procedure as a practical sample preparation tool in support of chemical and biological, food, pharmaceutical, clinical and forensic analysis.
Chanbasha Basheer, Wei Shen, Sheng Tang
exaly +2 more sources
Recent developments in solid-phase microextraction for on-site sampling and sample preparation
TrAC - Trends in Analytical Chemistry, 2011 Recent developments in solid-phase microextraction for on-site sampling and sample preparationOn-site sampling and sample preparation favor portable, solventless or even solvent-free techniques.
Yafeng Guan
exaly +2 more sources
Metal applications of liquid-phase microextraction [PDF]
TrAC - Trends in Analytical Chemistry, 2019 This review focuses on the combination of elemental detection techniques with liquid-phase microextraction (LPME), namely, single drop microextraction, hollow fiber based liquid-phase microextraction, dispersive liquid-liquid microextraction, and related
Antonio Canals +2 more
exaly +2 more sources
Journal of Chromatography A, 2000
This review will attempt to provide an overview as well as a theoretical and practical understanding of the use of microextraction technologies for drug analysis. The majority of the published reports to date focus on the use of fibre solid-phase microextraction and so the review is significantly focused on this technology.
H, Lord, J, Pawliszyn
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This review will attempt to provide an overview as well as a theoretical and practical understanding of the use of microextraction technologies for drug analysis. The majority of the published reports to date focus on the use of fibre solid-phase microextraction and so the review is significantly focused on this technology.
H, Lord, J, Pawliszyn
openaire +2 more sources
Analytica Chimica Acta, 2019
For the first time, a rapid, efficient, simple, and inexpensive approach for solid phase microextraction on a screw (MES) was developed. MES is a miniaturized form of solid-phase extraction without any backpressure. In this system, analytes were adsorbed on the surface of micro channels of a screw that was coated by polypyrrole (PPy).
Mahmoud Tabibpour +2 more
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For the first time, a rapid, efficient, simple, and inexpensive approach for solid phase microextraction on a screw (MES) was developed. MES is a miniaturized form of solid-phase extraction without any backpressure. In this system, analytes were adsorbed on the surface of micro channels of a screw that was coated by polypyrrole (PPy).
Mahmoud Tabibpour +2 more
openaire +2 more sources
Journal of Separation Science, 2010
AbstractGas‐diffusion microextraction (GDME) is an innovative technique that combines the advantages of membrane‐aided gas‐diffusion with microextraction concepts. GDME makes uses of a novel portable and low‐cost device that comprises a small, commercially available, semi‐permeable membrane.
Joao Grosso Pacheco +4 more
openaire +3 more sources
AbstractGas‐diffusion microextraction (GDME) is an innovative technique that combines the advantages of membrane‐aided gas‐diffusion with microextraction concepts. GDME makes uses of a novel portable and low‐cost device that comprises a small, commercially available, semi‐permeable membrane.
Joao Grosso Pacheco +4 more
openaire +3 more sources
Headspace Solvent Microextraction
Analytical Chemistry, 2001A hanging microliter drop of 1-octanol is shown to be an excellent preconcentration medium for headspace analysis of volatile compounds in an aqueous matrix by gas chromatography (GC) or gas chromatography/mass spectrometry (GC/MS). Model compounds benzene, toluene, ethylbenzene, and o-xylene (BTEX) are conveniently and rapidly preconcentrated in the ...
A L, Theis +3 more
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Analytical Chemistry, 2003
The properties of a thin sheet of poly(dimethylsiloxane) (PDMS) membrane as an extraction phase were examined and compared to solid-phase microextraction (SPME) PDMS-coated fiber for application to semivolatile analytes in direct and headspace modes.
Inge, Bruheim +2 more
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The properties of a thin sheet of poly(dimethylsiloxane) (PDMS) membrane as an extraction phase were examined and compared to solid-phase microextraction (SPME) PDMS-coated fiber for application to semivolatile analytes in direct and headspace modes.
Inge, Bruheim +2 more
openaire +2 more sources