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.
出处
《农药科学与管理》
CAS
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)
