毒死蜱在苹果和土壤中的残留动态及安全性评价  

Residue Dynamics and Safety Evaluation of Chlorpyrifos in Apple and Soil

作　　者：宋国春[1] 于建垒[1] 李瑞娟[1] 于天行 

机构地区：[1]山东省农业科学院植物保护研究所/山东省植物病毒学重点实验室,山东济南250100 [2]山东大学威海分校,山东威海264209

出　　处：《山东农业科学》2011年第8期84-86,89,共4页Shandong Agricultural Sciences

基　　金：山东省科技发展计划项目(2009GG20002037)

摘　　要：通过田间试验和室内检测,研究了毒死蜱在苹果及土壤中的残留动态及最终残留量。结果表明:毒死蜱在苹果中的半衰期为6.9～8.0 d,药后21 d消解87%以上。毒死蜱在土壤中的半衰期为4.8～6.2 d,药后14 d消解87%以上。毒死蜱40%微乳剂以267、400.5 mg a.i./kg,施药3、4次,末次施药后14 d收获的苹果中毒死蜱残留量均低于1 mg/kg。推荐该药在苹果上的安全间隔期为14 d。The field experiment and laboratory testing were conducted to reveal the degradation dynamics and the final residues of chlorpyrifos in apple and soil. The results showed that the half - life of ehlorpyrifos was 6.9 - 8.0 days and 4.8 -6.2 days in apple and soil respectively, and over 87% degraded on the 21st day in apple and on the 14th day in soil after application. When sprayed 3-4 times with 267 mga. i./kg and 400.5 mg a. i./kg chlorpyrifos 40% ME, and the last application was 14 days before harvesting, the residue of ehlorpyrifos in apple was lower than 1 mg/kg （ MRL）, and 14 days were recommended as the preharvest interval of chlorpyrifos for apple.

关 键 词：毒死蜱 苹果 残留动态 安全性 

分 类 号：X592[环境科学与工程—环境工程]