高效液相色谱串联质谱对花生中三氟羧草醚的残留检测与风险评估  

Determination and Risk Assessment of Acifluorfen-sodium Residues in Peanut by HPLS-MS/MS

作　　者：徐金丽[1] 尤祥伟[1] 陈丹[1] 郑晓[1] 徐光军[1] 王秀国[1] 

机构地区：[1]中国农业科学院烟草研究所国家烟草专卖局病虫害监控与综合治理重点实验室,山东青岛266101

出　　处：《农药科学与管理》2017年第8期25-30,共6页Pesticide Science and Administration

基　　金：农业部农药登记与风险评价项目(2015CL-012)

摘　　要：建立了高效液相色谱-串联质谱法测定三氟羧草醚在花生中农药残留的检测方法,并利用GAP试验样品进行了消解动态研究和最终残留的风险评估。样品经过乙腈/浓盐酸(V:V,98:2)提取,分散固相萃取净化,高效液相色谱串联质谱仪检测。两年三地试验结果表明:三氟羧草醚在花生植株中的消解较快,半衰期为1.1~2.4d;土壤中的半衰期14.4~25.7d。按990ga.i/hm^2和1 485ga.i/hm^2剂量分别施药1次,为杂草定向喷雾,施药后于花生收获前20d、收获期分别采样,三氟羧草醚在花生上最终残留量均<0.1mg/kg。A high performance liquid chromatography tan MS） method acifluorfen - was developed for the determination of the de dem mass spectrometry （HPLC -MS/ gradation dynamics and final residue of sodium. Samples collected from the GAP field trials were extracted by acetonitrile / concentrated hydrochloric acid, extracted and purified by dispersive solid phase and detected by HPLC - MS/MS. The results showed that acifluorfen - sodium in peanut plants went through a rapid digestion with the half life of 1.1 - 2. 4 d in peanut leaf and 14. 4 - 25.7d in soil. According to the recommended application rate, the residue of acifluorfen - sodium in peanut was found to be less than 0. 1 mg/kg.

关 键 词：高效液相色谱-串联质谱 花生 三氟羧草醚 残留检测 风险评估 

分 类 号：O657.63[理学—分析化学] S481.8[理学—化学]