Results 201 to 210 of about 30,021 (227)

Dynamic headspace liquid-phase microextraction of alcohols

Journal of Chromatography A, 2005
A 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.
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Determination of clenbuterol in urine using headspace solid phase microextraction or liquid–liquid–liquid microextraction

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, Wei-Hsun Hsu, Shang-Da Huang   +2 more
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Dynamic Liquid−Liquid−Liquid Microextraction with Automated Movement of the Acceptor Phase

Analytical Chemistry, 2005
A 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.
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Emulsion-based liquid-phase microextraction: a review

Journal of the Iranian Chemical Society, 2013
In 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, Yadollah Yamini, Behnam Ebrahimpour   +2 more
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Liquid–phase microextraction: A review of reviews

Microchemical Journal, 2019
Abstract 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, Justyna Płotka-Wasylka, Muhammad Sajid, Vasil Andruch   +3 more
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Combination of dispersive liquid–liquid microextraction and solid–phase microextraction: An efficient hyphenated sample preparation method

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, Mohammad, Saraji, Mehdi, Mossaddegh   +2 more
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Unconfined liquid-phase microextraction

2021
Rafael Lucena, Elefteria Psillakis, Soledad Cárdenas   +2 more
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Ionic liquid-based liquid-phase microextraction techniques

2022
C. Azorín, J.L. Benedé, A. Chisvert
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Deep eutectic solvents in liquid-phase microextraction: Contribution to green chemistry

TrAC - Trends in Analytical Chemistry, 2022
Luana Bastos Santos, Jeferson Alves Barreto, Valfredo A Lemos   +2 more
exaly  

Liquid-phase microextraction – The different principles and configurations

TrAC - Trends in Analytical Chemistry, 2019
Yadollah Yamini, Maryam Rezazadeh, Shahram Seidi   +2 more
exaly