Determination of herbicides and their metabolites in natural waters by capillary zone electrophoresis combined with dispersive liquid-liquid microextraction and on-line preconcentration

被引：7

作者：

Bol'shakov, D. S. ^{[1
,2
]}

Amelin, V. G. ^{[1
,2
]}

Tret'yakov, A. V. ^{[1
,2
]}

机构：

[1] Fed Anim Hlth Ctr, Vladimir 600901, Russia

[2] Vladimir State Univ, Vladimir 600000, Russia

来源：

JOURNAL OF ANALYTICAL CHEMISTRY | 2014年 / 69卷 / 01期

关键词：

capillary zone electrophoresis; herbicides and their metabolites; dispersive liquid-liquid microextraction; on-line preconcentration; natural waters; PHENOXY ACID HERBICIDES; GAS-CHROMATOGRAPHY; MASS-SPECTROMETRY; SEPARATION; CHLOROPHENOXY; DICAMBA; 2,4-D; EXTRACTION;

D O I：

10.1134/S106193481311004X

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A method has been proposed for the determination of 17 herbicides and their metabolites in natural waters by capillary zone electrophoresis with UV detection at 190 nm. Dispersive liquid-liquid microextraction with trichloromethane has been used for pesticide recovery from water. The high sensitivity of determination has been provided by additional intracappilary preconcentration: the limits of pesticide detection in water involving off- and on-line preconcentration are 0.5-3.0 mu g/L. The analysis takes 1-1.5 h; the relative standard deviation of the analysis results does not exceed 5%.

引用

页码：72 / 82

页数：11

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