Electro membrane extraction followed by low-density solvent based ultrasound-assisted emulsification microextraction combined with derivatization for determining chlorophenols and analysis by gas chromatography-mass spectrometry

Journal of Chromatography. a
Liang Guo, Hian Kee Lee

Abstract

A highly efficient and simple two-step method, electro membrane extraction (EME) followed by low-density solvent based ultrasound-assisted emulsification microextraction (EME-LDS-USAEME) combined with derivatization and analysis by gas chromatography-mass spectrometry (GC-MS), was developed for the determination of trace level chlorophenols in environmental water samples. In the first step, the analytes were extracted, under electrical potential, from the sample solution into the acceptor solution, which was held in a polypropylene membrane sheet with 1-octanol as the supported liquid membrane. The acceptor solution from the first step was then employed as the sample solution for the second step of LDS-USAEME. In this step, the target analytes were extracted into a solvent with lower density than water that was dispersed in the sample solution with the assistance of ultrasound. The extract was separated from the sample solution by centrifugation and collected as the upper layer. Finally, the extract with a derivatization reagent were injected into a GC-MS system for analysis. Six chlorophenols, 2-chlorophenol, 4-chlorophenol, 2,3-dichlorophenol, 2,4-dichlorophenol, 2,4,6-trichlorophenol and pentachlorophenol were selected here ...Continue Reading

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Citations

Apr 19, 2013·Journal of Chromatographic Science·Vamsi Krishna MarothuRamanasri Vusa
Nov 22, 2013·Analytical and Bioanalytical Chemistry·Mohammad Saraji, Malihe Khalili Boroujeni
Jan 29, 2016·Analytical Chemistry·Liang GuoHian Kee Lee
Nov 5, 2015·Journal of Chromatography. a·Nyi Nyi NaingHian Kee Lee
Sep 1, 2015·Analytica Chimica Acta·Andrea ŠlampováPetr Boček
Feb 12, 2015·Journal of Pharmaceutical and Biomedical Analysis·Chuixiu HuangStig Pedersen-Bjergaard
Dec 3, 2016·Journal of Chromatographic Science·Ali Mohamed Ali AlsharifAbubakar Lawal
May 9, 2014·Electrophoresis·Astrid Gjelstad, Stig Pedersen-Bjergaard
Aug 30, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Li XuHenan Li

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