农药学学报2017，Vol.19Issue(3)：374-380,7.DOI:10.16801/j.issn.1008-7303.2017.0048
烯效唑在棉花及土壤中的残留及消解动态
Residue and dissipation of uniconazole inGossypium spp. and soil
摘要
Abstract
An analytical method with high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) was established to test uniconazole residues inGossypium spp. leaves, Gossypium spp. seeds and soil. Uniconazole residue and dissipation onGossypium spp. leaves and soil were also investigated with this method. Uniconazole residues were extracted with acetonitrile/water mixture and an aliquot of the extract was purified by a solid-phase extraction Cleanert NH2 cartridge. Finally, the analytes were measured by multiple reaction monitoring (MRM) in the electrospray positive ionization mode. The external standard method was adopted for the quantification. The results showed that the recovery rate of uniconazole inGossypium spp. leaves,Gossypium spp. seeds and soil were between 74%-101%, with the relative standard deviations from 1.2% to 10% (n = 5). The limits of detection (LOD) of the method were 0.01 ng and the limits of quantification (LOQ) were 0.01 mg/kg for three matrices. The method is accurate, sensitive, simple and suitable for the determination of uniconazole residues inGossypium spp. samples. Field experimental results showed that the dissipation half-lives of uniconazole inGossypium spp. leaves and soil were 4.2-5.0 days and 15.8-19.7 days, respectively. The terminal residues at harvest inGossypium spp. seeds and soil were lower than 0.01 mg/kg and 0.022 mg/kg, respectively.关键词
烯效唑/棉花/土壤/残留/消解动态Key words
uniconazole/Gossypium spp./soil/residue/dissipation dynamics分类
农业科技引用本文复制引用
马婧玮,李通,周玲,张军锋,周娟,吴绪金..烯效唑在棉花及土壤中的残留及消解动态[J].农药学学报,2017,19(3):374-380,7.基金项目
粮油作物产品未知危害因子识别与已知危害因子安全性评估项目(GJFP2015007) （GJFP2015007）
河南省农业科学院基础科研项目(2016). （2016）
