LC-MS/MS测定有机肥中均三氮苯类除草剂  

Determination of s- triazine herbicide residues in organic fertilizer by LC- MS / MS

作　　者：朱将伟[1,2] 曹牧[3] 

机构地区：[1]江苏省南方现代林业协同创新小心南京林业大学,南京210037 [2]江苏省林业生态工程重点实验室,南京210037 [3]南京林业大学生物与环境学院,南京210037

出　　处：《分析试验室》2015年第4期466-470,共5页Chinese Journal of Analysis Laboratory

摘　　要：利用液相色谱-串联质谱同时测定有机肥中氰草津等7种均三氮苯类除草剂残留,首先用乙腈作为萃取溶剂提取有机肥中的均三氮苯类除草剂,经中性氧化铝小柱净化后用LC-MS/MS进行测试,最终完成定性和定量分析。方法定量限可达0.53 ng/m L或以下,回收率范围是84.0%～96.1%,RSD为3.1%～6.5%,符合我国农药残留检测相关标准的要求。7 kinds of s-triazine herbicide residues in organic fertilizer were simultaneously determined by adopting liquid chromatography-tandem mass spectrometry. These herbicides were extracted from organic fertilizer firstly by using methyl cyanide as the extraction solvent,and then were purified by neutral alumina column.Finally,the sample solvent was analyzed by liquid chromatography-tandem mass spectrometry, and the qualitative and quantitative determination was realized. The test result showed that the limit of quantification of this method was lower than 0. 53 ng / m L. The recovery range was 84. 0% ～ 96. 1% and RSD was 3. 1% ～6. 5%,which were consistent with the requirements in relative standards about pesticide residue detection in China.

关 键 词：液相色谱-串联质谱 有机肥 均三氮苯类除草剂 残留 

分 类 号：O657.63[理学—分析化学]