Dissipation and residue behavior of emamectin benzoate on apple and cabbage field application
- 作者：Lei Wang ; Pengyue Zhao ; Fengzu Zhang ; Yanjie Li ; Fengpei Du ; Canping Pan ; canpingp@cau.edu.cn
- 关键词：Emamectin benzoate ; Dissipation ; Residue ; Apple ; Cabbage ; Soil
- 刊名：Ecotoxicology and Environmental Safety
- 出版年：2012
- 期刊代码：77_01476513
- 类别：env
- 出版时间：1 April, 2012
- 卷：78
- 期：Complete
- 页码：260-264
- 文件大小：338 K
摘要
A LC-ESI-MS/MS method with QuEChERS for analysis of emamectin benzoate in cabbage, apple and soil was established. At fortification levels of 0.001, 0.01 and 0.1 mg/kg in cabbage, apple and soil, it was shown that recoveries ranged from 75.9 to 97.0 percent with relative standard deviation (RSD) of 4.4-19.0 percent. The limit of quanti铿乧ation (LOQ) was 0.001 mg/kg for cabbage, apple and soil. The dissipation half-lives of emamectin benzoate in cabbage, apple and soil were 1.34-1.72 day, 2.75-3.09 day and 1.89-4.89 day, respectively. The 铿乶al residues of emamectin benzoate ranged from 0.001 to 0.052 mg/kg in cabbages, 0.003 to 0.090 mg/kg in apples and 0.001 to 0.089 mg/kg in soils, respectively. Therefore, it would be unlikely to cause health problems if emamectin benzoate was applied according to the use pattern suggested by the manufactures on the label.