采用固相萃取-气相色谱法测定蔬菜中唑酮草酯残留量  

Determination of Carfentrazone-ethyl Residue in Vegetables by Solid-phase Extraction and Gas Chromatography

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作  者:董茂锋[1] 白冰[1] 宋卫国[1] 王伟民[1] 邢增涛[2] 

机构地区:[1]上海市农业科学院农产品质量标准与检测技术研究所,上海201403 [2]上海市农业委员会,上海200001

出  处:《农药》2014年第12期912-914,共3页Agrochemicals

基  金:基金项目:上海市农业委员会地方标准

摘  要:[目的]建立唑酮草酯在12种蔬菜中的分析方法。[方法]样品经乙腈涡旋提取后,弗罗里矽柱小柱净化,GC-滋ECD测定。[结果]方法最小定量限(LOQ)为10滋g/kg,蔬菜中唑酮草酯的平均添加回收率为85.94%~112.56%,相对标准偏差为0.98%~10.95%。[结论]该方法简单、高效和准确度好,能够满足农药残留分析和相关限量要求。[Aims] A method was developed to analyse carfentrazone-ethyl residue in vegetables. [Methods] The samples were vortex extracted with acetonitrile for 3 mins, then the extract was cleaned-up by solid-phase extraction(SPE) with Florisil and analysed by gas chromatography-electron capture detector(GC-ECD). [Results] The limit of quantitation(LOQ) of the method was 10 ug/kg. The recoveries of carfentrazone-ethyl in vegetables were all between85.94 and 112.56%, and the relative standard deviation(RSD) was 0.98-10.95%. [Conclusions] The method has the advantages of simple, efficient and high accuracy, which can satisfy the demand of pesticide residue analysis and maximum residue limit(MRL) of carfentrazone-ethyl.

关 键 词:唑酮草酯 蔬菜 气相色谱 固相萃取(SPE) 

分 类 号:O657.71[理学—分析化学] TS255.7[理学—化学]

 

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