农药学学报2011，Vol.13Issue(6)：632-636,5.DOI:10.3969/j.issn.1008-7303.2011.06.13
乙虫腈在水稻土壤和田水中的残留及消解动态研究
Residue decline study of ethiprole in paddy field soil and water
尚子帅 1吴慧明 1秦丽 1马新生 1刘菲菲 1朱国念1
作者信息
- 1. 浙江大学农药与环境毒理研究所,杭州310029
- 折叠
摘要
Abstract
In order to study the safety of ethiprole to paddy soil ecosystem,residue decline of ethiprole in soil and water were investigated under field and field-simulated condition. The samples were extracted by acetic-acetonitrile (1: 99, V: V), cleaned up with primary secondary amine ( PSA), and analyzed by UPLC-MS/MS. External reference method was used for quantitative determination. The linearity was satisfied (r > 0. 98) in the concentration range of 0. 001 - 0. 1 mg/L . The limit of detection(LOD) was 2. 2 x 10~13 g,and the limit of quantification (LOQ) in paddy soil and water were 0. 001 mg/kg(L). The average fortification recoveries varied from 80. 2% to 119. 5% with relative standard deviation (RSD) of3.1% -9.0% when ethiprole was spiked at 0.002 -1.0 mg/kg level in soil matrix, the average fortification recoveries varied from 94. 2% - 108. 2% with relative standard deviation (RSD) of 1.6% -13.2% when ethiprole was spiked at 0.001 -1.0 mg/L level in water matrix. The decline study of ethiprole residue in paddy field soil and water were carried out,the decline curves accorded with the first-order kinetics equation, and the half-lives of ethiprole in soil andwater under field-simulated and field condition were of 3. 2 -2. 8 d and 3. 5 - 1. 8 d, respectively.Ethiprole belongs to the easily degradable pesticide.关键词
乙虫腈/超高效液相色谱-串联质谱/稻田土壤/水/消解动态Key words
ethiprole/UPLC-MS/MS/paddy soil/water/residue decline study分类
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尚子帅,吴慧明,秦丽,马新生,刘菲菲,朱国念..乙虫腈在水稻土壤和田水中的残留及消解动态研究[J].农药学学报,2011,13(6):632-636,5.
