This study was carried out to investigate the residue patterns and estimate the dietary intakes of the commonly used insecticides, emamectin benzoate in leaf mustard under greenhouse conditions. The pesticide was sprayed onto the leaf mustard at recommended and double doses at the 7 days before the harvest and then sampling was done at 0, 1, 2, 3, 4, 5, 6 and 7 days after spraying. The analytical samples were prepared by Quick, Easy, Cheap, Effective, Rugged and Safe (QuEChERS) method and the pesticide residue was determined by LC-MS/MS. Limites of detection (LODs) of emamectin benzoate was 0.002 mg kg-1 and its recovery ranged from 105.7 to 107.3%. Biological half-lives of emamectin benzoate were 0.8 days at the recommended dose and 1.0 days ate the double dose. The estimated daily intakes (EDIs) of the pesticide in the crop harvested at 4 days after spraying was less than 0.4% of its acceptable daily intakes (ADIs), representing that risk of the pesticide would be low.

Residual characteristics and estimated dietary intake of emamectin benzoate in leaf mustard

242nd National Meeting (2011)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.