测定环境样品和水稻样品中的氧乐果残留量。

Determination of oxadiargyl residues in environmental samples and rice samples.

机构信息

Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310029, People's Republic of China.

出版信息

Bull Environ Contam Toxicol. 2010 Feb;84(2):236-9. doi: 10.1007/s00128-009-9881-7. Epub 2009 Sep 27.

PMID:19784803

Abstract

Oxadiargyl is a commonly used herbicide in China. We developed a simple, fast, and high-throughput method employing gas chromatography with electron capture detector to determine oxadiargyl residues in food samples (rice, straws) and environmental samples (soil, water). Samples were prepared by a modified QuEChERS procedure. In this method, acetonitrile was used as the extracting solvent. The purifying step was omitted when the chromatographic conditions were optimized. Recoveries ranged from 82.9 to 112.0% for oxadiargyl in all samples, with relative standard deviation values lower than 6.2% at 0.01 mg/kg fortified concentration level.

摘要

氧乐果是中国常用的一种除草剂。我们开发了一种简单、快速、高通量的方法，采用带有电子捕获检测器的气相色谱法来测定食品样品（大米、秸秆）和环境样品（土壤、水）中的氧乐果残留。样品采用改良的 QuEChERS 法进行制备。在该方法中，乙腈被用作提取溶剂。在优化色谱条件时，省略了净化步骤。氧乐果在所有样品中的回收率在 82.9%至 112.0%之间，在 0.01 毫克/千克添加浓度水平下，相对标准偏差值低于 6.2%。