期刊论文

Residues and Dissipation of Thiophanate-methyl and Its Metabolites Carbendazim in Citrus

中文

农药

1006-0413

2018

57

4

276-278,293

10.16820/j.cnki.1006-0413.2018.04.010

:化学肥料 2016YFD0201200:农药减施增效综合技术研发专项 15K064:湖南省高校重点实验室平台开放基金

本校为第一机构

[目的]通过建立一种测定柑橘中甲基硫菌灵及其代谢产物多菌灵残留量的分析方法,对其在柑橘和土壤中的残留消解动态以及最终残留量进行研究。[方法]样品前处理采用优化的QuEChERS方法,利用超高效液相色谱-串联质谱(UPLC-MS/MS)进行检测,外标法定量。[结果]在0.004~4.0 mg/L的质量浓度范围内,甲基硫菌灵和多菌灵的质量浓度与响应值呈良好的线性关系;在0.004~4.0 mg/L添加质量浓度范围内,甲基硫菌灵和多菌灵的平均回收率为87.8%~117.9%,相对标准偏差(RSDs)为1.3%~10.7%;甲基硫菌灵和多菌灵的检出限(LOD)分别为0.05、 0.005 ng,其定量限(LOQ)分别为0.01、0.004 mg/kg。[结论]该方法具有灵敏度高、操...

[Aims]To establish a method to measure the residue of the thiophane-methy and its metabolites carbendazim in citrus, the dissipation dynamics and the final redidues in citrus and soil were studied. [Methods] The sample pretreatment was conducted by optimal Qu ECh ERs, and the determination was conducted by UPLC-MS/MS and external standard method. [Results] When the mass concentration was 0.004-4.0 mg/L, the mass concentration and response value of thiophane-methy and carbendasim have a good linear relation. While the addictive concentration was0.004-1.0 mg/L, the average recovery rate of them ...