| 摘要: |
| 采用直接进样法和萃取浓缩法2种前处理方式，通过超高效液相色谱-串联质谱法对水中20种拟除虫菊酯类和有机磷类农药进行了测定，并对仪器条件的选择和前处理条件的优化进行了探讨。结果表明，20种农药的线性关系良好，相关系数均＞0.999，直接进样法检出限为0.21～2.47μg/L，回收率为81.0%～119%，相对标准偏差＜10%。萃取浓缩法检出限为0.002 2～0.0043μg/L，回收率为71.5%～115%，相对标准偏差＜15%。该方法简便、快捷，精密度和准确度较高，可满足水中拟除虫菊酯类和有机磷类农药的检测要求。 |
| 关键词: 超高效液相色谱-串联质谱法 拟除虫菊酯类农药 有机磷类农药 |
| DOI： |
| 分类号:X832；O657.63 |
| 文献标识码:B |
| 基金项目:自然资源部国土（耕地）生态监测与修复工程技术创新中心开放课题基金资助项目（苏财建〔2017〕123号） |
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| Determination of Pyrethriod Pesticide and Organic Phosphorus Pesticide Residues in Water by Ultra Performance Liquid Chromatography-Tandem Mass Spectrometry |
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YANG Min-na，QIN Xing-xiu，WANG Lai-liang
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Cultivated Land Ecological Monitoring and Restoration Engineering Technology Innovation Center of Ministry of Natural Resources，Geological Survey of Jiangsu Province,Nanjing,Jiangsu 210018,China
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| Abstract: |
| A method for determination of 20 organic phosphorus and pyrethriod pesticides in water was established by using ultra performance liquid chromatography-tandem mass spectrometry after direct injection or after extraction and concentrated. The instrument conditions and pretreatment conditions were optimized. The regression equation of 20 kinds of pesticides showed good linear relationship, the correlation coefficients were all greater than 0.999. The detection limits were in the range from 0.21 to 2.47 μg/Lfor direct injection, and the average recoveries ranged from 81.0% to 119% with the relative standard deviations less than 10%. For extraction and concentration method, the method detection limits of the target compounds were in the range from 0.0022to0.0043μg/L, and the average recoveries ranged from 71.5% to 115% with the relative standard deviations less than 15%. This method is simple and fast, and its precision and accuracy can meet the demands of determination of pyrethriod prsticide and organic phosphorus pesticide in water. |
| Key words: UPLC MS/MS Pyrethriod pesticide Organic phosphorous pesticide |
