Results 191 to 200 of about 29,757 (224)
Some of the next articles are maybe not open access.
Ionic liquids in solid-phase microextraction: A review
Analytica Chimica Acta, 2011Solid-phase microextraction (SPME) has undergone a surge in popularity within the field of analytical chemistry in the past two decades since its introduction. Owing to its nature of extraction, SPME has become widely known as a quick and cost-effective sample preparation technique.
Tien D, Ho +2 more
openaire +2 more sources
Kinetic Calibration for Automated Headspace Liquid-Phase Microextraction
Analytical Chemistry, 2005The kinetics of the absorption and desorption of analytes for headspace liquid-phase microextraction (HS-LPME) were studied. It was found that the desorption of analytes from the extraction phase into the sample matrix is isotropic to the absorption of the analytes from the sample matrix into the extraction phase under the same conditions.
Gangfeng, Ouyang +2 more
openaire +2 more sources
Dynamic headspace liquid-phase microextraction of alcohols
Journal of Chromatography A, 2005A method was developed using dynamic headspace liquid-phase microextraction and gas chromatography-mass spectrometry for extraction and determination of 9 alcohols from water samples. Four different solvents, hexyl acetate, n-octanol, o-xylene and n-decane were studied as extractants.
openaire +2 more sources
Analytica Chimica Acta, 2005
Abstract Headspace solid phase microextraction (HS-SPME) and liquid–liquid–liquid microextraction with automated movement of the acceptor phase (LLLME/AMAP) techniques are described for the extraction of clenbuterol (CB) in urine. HS-SPME technique involves the extraction of the drug by SPME fibre in a headspace mode with a cooling device at the ...
Mahaveer B. Melwanki +2 more
openaire +1 more source
Abstract Headspace solid phase microextraction (HS-SPME) and liquid–liquid–liquid microextraction with automated movement of the acceptor phase (LLLME/AMAP) techniques are described for the extraction of clenbuterol (CB) in urine. HS-SPME technique involves the extraction of the drug by SPME fibre in a headspace mode with a cooling device at the ...
Mahaveer B. Melwanki +2 more
openaire +1 more source
Dynamic Liquid−Liquid−Liquid Microextraction with Automated Movement of the Acceptor Phase
Analytical Chemistry, 2005A new dynamic liquid-liquid-liquid microextraction procedure, with the automated movement of acceptor phase (LLLME/AMAP) to facilitate mass transfer, was developed in this study. Four compounds, 3-nitrophenol, 4-nitrophenol, 3,4-dinitrophenol, and 2,4-dichlorophenol, were used as model compounds to be preconcentrated from water samples.
Jiang, X., Sze, Y.O., Hian, K.L.
openaire +2 more sources
Emulsion-based liquid-phase microextraction: a review
Journal of the Iranian Chemical Society, 2013In the past decade, liquid-phase microextraction (LPME), which can also be called solvent microextraction, has emerged as a minimal organic solvent-based sample preparation approach. The main advantages of this method include versatility, simplicity and effectiveness of its extraction procedures at reducing sample complexity, as well as the convenience
Morteza Moradi +2 more
openaire +1 more source
Liquid–phase microextraction: A review of reviews
Microchemical Journal, 2019Abstract Sample preparation is an important step in chemical analysis. It is generally done to deal with problems associated with the nature of the matrix, low analyte concentrations in real samples or analyte features incompatible with the instrumentation. Classical methods of extraction consume large volumes of hazardous solvents and other reagents
Małgorzata Rutkowska +3 more
openaire +1 more source
Natural product applications of liquid-phase microextraction
TrAC Trends in Analytical Chemistry, 2019Abstract As a simple, rapid, green, and highly-efficient sample-preparation technique, liquid-phase microextraction has been successfully coupled with various instrumental analysis methods and widely applied to determine target analytes (especially trace or ultratrace) from different natural products.
Shuang Hu +4 more
openaire +1 more source
Journal of Chromatography A, 2016
Two well-known microextraction methods, dispersive liquid-liquid microextraction (DLLME) and solid-phase microextraction (SPME), were combined, resulting in as an encouraging method. The method, named DLLME-SPME, was performed based on total vaporization technique.
Mohammad T, Jafari +2 more
openaire +2 more sources
Two well-known microextraction methods, dispersive liquid-liquid microextraction (DLLME) and solid-phase microextraction (SPME), were combined, resulting in as an encouraging method. The method, named DLLME-SPME, was performed based on total vaporization technique.
Mohammad T, Jafari +2 more
openaire +2 more sources