Simultaneous Determination of Aminopyralid, Clopyralid, and Picloram Residues in Vegetables and Fruits Using Ultra-Performance Liquid Chromatography/Tandem Mass Spectrometry

文献类型： 外文期刊

第一作者： Tian, Yingying

作者： Tian, Yingying;Liu, Xingang;Dong, Fengshou;Xu, Jun;Lu, Caihong;Kong, Zhiqiang;Zheng, Yongquan

作者机构：

期刊名称：JOURNAL OF AOAC INTERNATIONAL （ 影响因子：1.913； 五年影响因子：1.754 ）

ISSN： 1060-3271

年卷期： 2012 年 95 卷 2 期

页码：

收录情况： SCI

摘要： A sensitive and effective method for the simultaneous quantitative determination of aminopyralid, clopyralid, and picloram in vegetables (eggplant, cucumber, and tomato) and fruits (apple and grape) was developed and validated using ultra-performance LC coupled with MS/MS. The three herbicides were successfully separated and independently confirmed in a single run. Different extraction and cleanup methods were used to optimize the pretreatment processes of the residue analysis method. The final method is straightforward and involves extraction with 1% formic acid acetonitrile, and no complicated cleanup process is needed. Determination of the compounds was achieved within 3.0 min. Respective average recoveries using this method at four concentration levels (0.05, 0.1, 0.5, and 1.0 mg/kg) ranged from 66.5 to 109.4%, with RSDs in the range of 1.1-19.7% (n = 5) for all analytes. The LODs were below 0.010 mg/kg, and the LOQs did not exceed 0.036 mg/kg, which were lower than the maximum residue limits (MRLs) of 0.5-5.0 mg/kg clopyralid in vegetables and fruits samples, as established by the European Union. This study provides a theoretical basis for China to develop MRLs and an analytical method for aminopyralid, clopyralid, and picloram in vegetables and fruits.

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