期刊
JOURNAL OF SEPARATION SCIENCE
卷 33, 期 23-24, 页码 3734-3740出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.201000443
关键词
Benzoylurea pesticides; Ionic liquid
资金
- National Natural Science Foundation of China [20877022]
- Personal Innovation Foundation of Universities in Henan Province [[2005] 126]
- Natural Science Foundation of Henan Province [092300410126]
This paper describes a new method for rapid and sensitive determination of diflubenzuron, flufenoxuron, triflumuron and chlorfluazuron in water samples by ultrasound-assisted ionic liquid dispersive liquid-phase microextraction in combination with HPLC. Ionic liquid 1-hexyl-3-methylimidazolium hexafluorophosphate ([C6MIM][PF6]) was used as the extraction solvent for the enrichment of four benzoylurea (BU) pesticides. Factors such as volume of [C6MIM][PF6], sonication time, sample pH, extraction time, centrifuging time and salting-out effect were systematically investigated. Under the optimum conditions, an excellent linear relationship was achieved in the range of 1.0-100 mu g/L. The detection limits varied from 0.21 to 0.45 mu g/L and the precision of the method was below 6.9% (RSD, n = 56). The proposed method was successfully applied for the determination of these BU pesticides in water samples and excellent spiked recoveries were achieved. All these results demonstrated that this procedure provided a new simple, rapid, easy to operate, efficient and sensitive method for the analysis of BU pesticides in aqueous samples.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据