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ABSTRACT: This experiment was carried out to investigate the residue patterns of two insecticides,indoxcarb and thiamethoxam, commonly used for Chinese cabbage, under greenhouse conditions. Thepesticides were sprayed onto Chinese cabbage at the recommended dose and double of the recommendeddose10daysbeforetheprearrangedharvestandthensamplingwasdoneat0.17,1,2,3,4,5,6,8,10,and 12 days after spraying. The amounts of their residues in the crop were analyzed with an HPLC. Thelimit of detection (LOD) of both indoxacarb and thiamethoxam was 0.01 mg kg -1 and mean recoveries ofindoxacarb and thiamethoxam were from 97.91 to 104.36% and from 97.07 to 105.49%, respectively.Half-lives of indoxacarb and thiamethoxam were 3.4 and 2.3 days at the recommended dose and 3.3 and3.5 days at the doubled dose, respectively. The ratios of the EDI to ADI by intake the crop harvested 10days after spraying were less than 4% of their ADIs.Key Words: Indoxacarb, Thiamethoxam, Estimated daily intake, Acceptable daily intake, DT

hanguk hwangyeong nonghak hoeji/han'gug hwan'gyeong nonghag hoeji

Residue Patterns of Indoxacarb and Thiamethoxam in Chinese Cabbage(Brassica campestris L.) Grown under Greenhouse Conditions and Their Estimated Daily Intake