Results 151 to 160 of about 2,120 (176)
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Progress of Extraction Solvent Dispersion Strategies for Dispersive Liquid-liquid Microextraction
Chinese Journal of Analytical Chemistry, 2015Abstract Dispersive liquid-liquid microextraction (DLLME) is a new sample preparation technique emerging recently. The dispersion of organic extraction solvent at micro-liter level in aqueous samples is the key step in DLLME. The published strategies of dispersion for DLLME are roughly classified into three types in terms of the instruments used and ...
Ming-Jie LI +4 more
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Dispersive liquid-liquid microextraction for a rapid determination of glyoxal in alcoholic beverages
Talanta, 2017Carbonyl compounds, like glyoxal, methylglyoxal, diacetyl or pentane-2,3-dione, among others, have been widely studied. Besides its endogenous origin, they are originated from foodstuffs and are related to sensorial characteristics in products such as wine and beer.
María Isabel, Rodríguez-Cáceres +3 more
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Food Chemistry, 2019
The concentration of tetramethylpyrazine (TMP) in vinegar is an active indicator of vinegar quality. Dispersive liquid-liquid microextraction (DLLME) was first applied to vinegar as a clean-up pre-treatment for the rapid (5 min) determination of TMP by high-pressure liquid chromatography with ultraviolet detection (HPLC-UV), and may serve as an ...
Jianhai, Wu +4 more
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The concentration of tetramethylpyrazine (TMP) in vinegar is an active indicator of vinegar quality. Dispersive liquid-liquid microextraction (DLLME) was first applied to vinegar as a clean-up pre-treatment for the rapid (5 min) determination of TMP by high-pressure liquid chromatography with ultraviolet detection (HPLC-UV), and may serve as an ...
Jianhai, Wu +4 more
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Ionic liquids as solvents for in situ dispersive liquid–liquid microextraction of DNA
Journal of Chromatography A, 2013Six ionic liquids (ILs) were applied for the first time as solvents in the extraction and preconcentration of deoxyribonucleic acid (DNA) using an in situ dispersive liquid-liquid microextraction (DLLME) approach. The effect of different IL substituents and functional group on the extraction efficiency of DNA was investigated.
Tianhao, Li +3 more
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Recent Advances in Dispersive Liquid-Liquid Microextraction for Pharmaceutical Analysis
Critical Reviews in Analytical ChemistrySample clean-up and pre-concentration are critical components of pharmaceutical analysis. The dispersive liquid-liquid microextraction (DLLME) technique is widely recognized as the most effective approach for enhancing overall detection sensitivity.
Karen Sze Jie Tay, Hong Heng See
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Journal of Separation Science, 2011
AbstractDispersive liquid–liquid microextraction (DLLME) combined with gas chromatography and mass spectrometry (GC‐MS) was applied to the determination of six organophosphorous pesticides (OPPs) in water samples. The analytes included in this study were prophos, diazinon, chlorpyrifos methyl, methyl parathion, fenchlorphos and chlorpyrifos.
Andreia Cristina Henriques, Alves +3 more
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AbstractDispersive liquid–liquid microextraction (DLLME) combined with gas chromatography and mass spectrometry (GC‐MS) was applied to the determination of six organophosphorous pesticides (OPPs) in water samples. The analytes included in this study were prophos, diazinon, chlorpyrifos methyl, methyl parathion, fenchlorphos and chlorpyrifos.
Andreia Cristina Henriques, Alves +3 more
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Partitioned dispersive liquid–liquid microextraction
Journal of Chromatography A, 2008Mahaveer B. Melwanki, Ming-Ren Fuh
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Dispersive Liquid–Liquid Microextraction
2012Y. Assadi, M.A. Farajzadeh, A. Bidari
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Dispersive Liquid-Liquid Microextraction and Its Variants
2021Rakesh Roshan Jha +2 more
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Use of green alternative solvents in dispersive liquid‐liquid microextraction: A review
Journal of Separation Science, 2022Juan Luis Benedé +2 more
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