Methyl Chloroacetate as Extraction Solvent for Coupling Liquid-liquid Semimicroextraction with Micellar Electrokinetic Chromatography for the Separation of Neutral Compounds with Concentration Enhancement

Chem. J. Chinese Universities ›› 2011, Vol. 32 ›› Issue (7): 1488.

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Methyl Chloroacetate as Extraction Solvent for Coupling Liquid-liquid Semimicroextraction with Micellar Electrokinetic Chromatography for the Separation of Neutral Compounds with Concentration Enhancement

TANG Jing^1*, ZHENG Sheng-Biao¹, ZHU Jin-Kun¹, WANG Tian-Lin²

1. School of Science, Anhui Science and Technology University, Fengyang 233100, China;
2. Department of Chemistry, Shanghai University, Shanghai 200444, China

Received:2010-09-25 Revised:2010-11-29 Online:2011-07-10 Published:2011-06-02
Contact: TANG Jing E-mail:yayajing@shu.edu.cn
Supported by:
安徽科技学院引进人才基金项目(批准号: ZRC2009239)资助.

Abstract

Abstract: This paper reports the use of methyl chloroacetate (MCA) as an extraction solvent for coupling liquid-liquid semimicroextraction (LLsME) with micellar electrokinetic chromatography (MEKC) through on-capillary decomposition for the separation of neutral compounds with concentration enhancement. Alkylphenones of C8, C10 and C11 were chosen as modeling compounds. Aqueous samples of the ?alkylphenones were extracted by LLsME into methyl chloroacetate. The organic phase was directly subjected to separation by MEKC. The detection limits (S/N≥3) were 50, 50 and 100 μg/L (ppb) for butyrophenone, valerophenone and acetophenone in water, respectively, and the concentration factors of the extraction were in a range of 63 to 151-fold in terms of peak area for the three alkylphenones. The method developed has no requirement on any special experimental apparatuses other than a basic CE setup and is time-saving and easy in operation. Therefore, it would be readily acceptable for routine analysis, especially for environmental samples.

Key words: Liquid-liquid semimicroextraction, Micellar electrokinetic chromatography, Methyl chloroacetate, Alkylphenones, Concentration

CLC Number:

O657.8

TrendMD:

TANG Jing*, ZHENG Sheng-Biao, ZHU Jin-Kun, WANG Tian-Lin. Methyl Chloroacetate as Extraction Solvent for Coupling Liquid-liquid Semimicroextraction with Micellar Electrokinetic Chromatography for the Separation of Neutral Compounds with Concentration Enhancement[J]. Chem. J. Chinese Universities, 2011, 32(7): 1488.

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Methyl Chloroacetate as Extraction Solvent for Coupling Liquid-liquid Semimicroextraction with Micellar Electrokinetic Chromatography for the Separation of Neutral Compounds with Concentration Enhancement

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