Application of dispersive liquid-liquid microextraction based on solidification of floating organic drop for simultaneous determination of alachlor and atrazine in aqueous samples

被引：49

作者：

Pirsaheb, Meghdad ^{[1
]}

Fattahi, Nazir ^{[2
]}

Shamsipur, Mojtaba ^{[3
]}

Khodadadi, Tarokh ^{[4
]}

机构：

[1] Kermanshah Univ Med Sci, Kermanshah Hlth Res Ctr, Dept Environm Engn, Kermanshah, Iran

[2] Kermanshah Univ Med Sci, Environm Epidemiol Res Ctr, Kermanshah, Iran

[3] Razi Univ, Dept Chem, Kermanshah, Iran

[4] Kermanshah Univ Med Sci, Students Res Comm, Kermanshah, Iran

来源：

JOURNAL OF SEPARATION SCIENCE | 2013年 / 36卷 / 04期

关键词：

Dispersive liquid-liquid microextraction; Herbicides; Solidification of floating organic drop; Water analysis; ASSISTED EMULSIFICATION-MICROEXTRACTION; CHROMATOGRAPHY-MASS-SPECTROMETRY; SOLID-PHASE MICROEXTRACTION; ELECTRON-CAPTURE DETECTION; ENVIRONMENTAL WATER SAMPLES; GAS-CHROMATOGRAPHY; ORGANOPHOSPHORUS PESTICIDES; EXTRACTION SOLVENT; HPLC-UV; HERBICIDES;

D O I：

10.1002/jssc.201200872

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Dispersive liquid-liquid microextraction based on solidification of floating organic drop coupled with HPLC-UV detection as a fast and inexpensive technique was applied to the simultaneous extraction and determination of traces of two common herbicides, alachlor and atrazine, in aqueous samples. The critical experimental parameters, including type of the extraction and disperser solvents as well as their volumes, sample pH, salt addition, and extraction time were investigated and optimized. Under the optimum conditions, the calibration graphs found to be linear in the range of 0.1-200 mu g/L with LOD in the range of 0.02-0.05 mu g/L. The RSDs were in the range of 4.2-5.3% (n = 5). The relative recoveries of well, tap, and river water samples which have been spiked with different levels of herbicides were 94.0-106.0, 99.0-105.0, and 88.5-97.0%, respectively.

引用

页码：684 / 689

页数：6

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