title: Dissipation and residue behavior of emamectin benzoate on apple and cabbage field application.
abstract: 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 quantiﬁcation (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 ﬁnal 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.
authors.affiliation: Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, PR China.
authors.forename: Lei
authors.initials: L
authors.lastname: Wang
authors.forename: Pengyue
authors.initials: P
authors.lastname: Zhao
authors.forename: Fengzu
authors.initials: F
authors.lastname: Zhang
authors.forename: Yanjie
authors.initials: Y
authors.lastname: Li
authors.forename: Fengpei
authors.initials: F
authors.lastname: Du
authors.forename: Canping
authors.initials: C
authors.lastname: Pan
mesh_terms: D001937:Brassica / Q000737:chemistry*; D006207:Half-Life; D007306:Insecticides / Q000032:analysis* / Q000737:chemistry; D007559:Ivermectin / Q000031:analogs & derivatives* / Q000032:analysis; D027845:Malus / Q000737:chemistry*; D013058:Mass Spectrometry; D010573:Pesticide Residues / Q000032:analysis* / Q000737:chemistry; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis / Q000737:chemistry; D053719:Tandem Mass Spectrometry
chemical_list: D007306:Insecticides; D010573:Pesticide Residues; D012987:Soil; D012989:Soil Pollutants; D007559:Ivermectin; C108024:emamectin benzoate