Microwave pretreatment and gas chromatography-mass spectrometry determination of herbicide residues in onion
文献类型： 外文期刊
作者： Zhang, Hong 1 ; Chen, Zilei 1 ; Yang, Guosheng 2 ; Wang, Wenzheng 1 ; Li, Xiuqing 1 ; Li, Ruiju 1 ; Wu, Yuanjuan 1 ;
作者机构： 1.Shandong Acad Agr Sci, Cent Lab, Jinan 250100, Peoples R China
2.Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Peoples R China
关键词： microwave;GC-MS;herbicide;onion
期刊名称：FOOD CHEMISTRY （ 影响因子：7.514； 五年影响因子：7.516 ）
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收录情况： SCI
摘要： A rapid multi-residue method was developed for the determination of 16 herbicides in onion. The analytical procedure was based on preventing formation of sulfur-containing compounds in onion by microwave inactivation of the enzyme alliinase. The onion samples which had been pretreated were extracted with acetonitrile and cleaned by solid-phase extraction. The herbicide residues in onion were detected by gas chromatography/mass spectrometry with selected ion monitoring. The recoveries of 16 herbicides ranged from 69.2% to 105.0% with the relative standard deviations (RSD) below 10.7%. The limit of quantitation (LOQ) ranged from 0.003 to 0.015 mg kg~(-1). The method was applied to the analysis of herbicide residues in onion samples.
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