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刊物期号: 201706

QuEChERS-GC-MS/MS法同时测定稻草中的106种农药残留(108)

作者: 袁 河 1,吴建霞1,楼小华2,王 垄1,龙薇运1,李清亮1,赵振宇1

地址:1.贵州茅台酒股份有限公司,贵州 仁怀 564501; 2. 贵州省烟草质量监督检测站,贵州 贵阳 550025
摘要 建立了一种稻草中106种农药残留的气相色谱-三重四极杆串联质谱检测方法。样品经QuEChERS技术提取和净化后,采用GC-MS/MS在选择反应监测模式(SRM)下定性定量。结果表明,(1)106种农药在稻草中的定量限(LOQ)为1.1~49.2 μg/kg;(2)在4~492 μg/L范围内,线性相关系数为0.9905~0.9999;(3)在稻草样品中添加浓度在36.5~1255.0 μg/kg之间时,平均回收率在65.2 %~124.1 %之间,RSD在0.6 % ~19.4 %之间;(4)该方法农药种类覆盖广、前处理简便、溶剂用量少,可应用于稻草中106种农药残留的快速筛查与定量分析。
关键词 QuEChERS; 气相色谱-三重四极杆串联质谱; 稻草; 农药残留
中图分类号: TS262.3;TS261.7;TS261.4 文献标识码: A 文章编号: 1001-9286(2017)06-0108-08

英文标题: Determination of 106 Pesticide Residues in Straw by QuEChERS-GC-MS/MS

英文作者: YUAN He1,WU Jianxia1,LOU Xiaohua2,WANG Long1,LONG Weiyun1,LI Qingliang1 and ZHAO Zhenyu1

英文地址: 1.Maotai Distillery Co. Ltd., Renhuai, Guizhou 564501; 2.Guizhou Tobacco Quality Supervision & Testing Station, Guiyang, Guizhou 550025, China

英文摘要 A method had been developed for simultaneous determination of 106 pesticide residues in straw by QuEChERS-GC-MS/MS. The pesticide residues in straw were extracted and purified with QuEChERS technology, then qualitative and quantitative analysis were conducted by GC-MS/MS under multi-reaction monitoring (MRM) mode. The results showed that, (1) the limits of quantification (LOQs) of 106 pesticide residues were ranged from 1.1 to 49.2 μg/kg; (2)within the linear range between 4μg/L and 492 μg/L, the linear correlation coefficient was between 0.9905 and 0.9999; (3) at the spiked levels of 36.5 to 1255.0 μg/kg in straw extract, the average recoveries ranged from 65.2 % to124.1 % and RSDs was between 0.6 % to 19.4 %; (4) this method covered a wide range of pesticides, was featured by its simple and rapid pretreatment with solvent-saving, and it could be applied in rapid determination and quantitative analysis of 106 pesticide residues in straw.
英文关键词 QuEChERS; GC-MS/MS; straw; pesticide residue
      

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