Determination of Phenoxy Acid Herbicides in Cereals Using High-Performance Liquid Chromatography-Tandem Mass Spectrometry
文献类型： 外文期刊
作者： Guo, Tao 1 ; Wang, Xiaoli 2 ; Wang, Haifeng 1 ; Hu, Yufen 2 ; Zhang, Shiyong 1 ; Zhao, Rusong 2 ;
作者机构： 1.Shandong Acad Agr Sci, Shandong Rice Res Inst, Jinan, Shandong, Peoples R China
2.Qilu Univ Technol, Shandong Acad Sci, Anal & Test Ctr, Jinan, Shandong, Peoples R China
关键词： Cereals; High-performance liquid chromatography-tandem mass spectrometry; Phenoxy acid herbicides; QuEChERS
期刊名称：JOURNAL OF FOOD PROTECTION （ 影响因子：2.077； 五年影响因子：2.224 ）
ISSN： 0362-028X
年卷期： 2019 年 82 卷 7 期
页码：
收录情况： SCI
摘要： An effective method for determination of multiple residues of phenoxy acid herbicides in cereals was developed. A QuEChERS (quick, easy, cheap, effective, rugged, and safe) technique coupled with high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) was optimized for the analysis of phenoxy acid herbicides in rice, corn, and wheat. The limits of detection in the experiment were 0.0500 mu g/kg for 4-(2,4-dichlorophenoxy) acetic acid, (4-chloro-2-methylphenoxy) acetic acid, (2,4,5-trichlorophenoxy) acetic acid, and 2-(2,4-dichlorophenoxy) propionic acid and 0.300 mu g/kg for 4-(2,4-dichlorophenoxy) butyric acid and 3,6-dichloro-2-methoxybenzoic acid. The relative standard deviation of intraday and interday precision for the six phenoxy acid herbicides was less than 6.61%, and accuracy was 96.3 to 107%. Extraction recovery for phenoxy acid herbicides was 73.8 to 115%, with relative standard deviations of less than 12.1% at three spiking levels (1.00, 4.00, and 20.0 mu g/kg). These results indicate that QuEChERS sample preparation with HPLC-MS/MS analysis is a rapid, reliable, highly sensitive, and specific tool for the determination of phenoxy acid herbicide residues in cereals.
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