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Determination of Pyrethroid Pesticides in Water Samples by Dispersive Liquid-liquid Microextraction Coupled with GC-MS
Author(s): 
Pages: 4-8,30
Year: Issue:  4
Journal: Journal of University of Science and Technology of Suzhou(Engineering and Technology)

Keyword:  dispersive liquid-liquid microextractiongas chromatography-mass spectrometrywater samplespyrethroid pesticides;
Abstract: 研究了用分散液液微萃取-气质联用法分析测定水样中的三种拟除虫菊酯类农药残留(联苯菊酯、氯氰菊酯和溴氰菊酯)的方法。通过实验确定了当样品体积为5 mL时的最佳萃取条件为:14μL氯苯作萃取剂,1.0 mL乙腈作分散剂,超声萃取1 min。在最佳实验条件下,该方法对水样中三种拟除虫菊酯类农药的富集倍数在318~363之间;线性范围分别在0.05~50μg/L和0.5~100μg/L之间;最低检出限在0...
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