吡嘧磺隆在稻田环境中的消解动态研究  

Degradation Dynamics of Pyrazosulfuron-ethyl in Paddyfield

作　　者：邓源[1] 郭正元[1] 

机构地区：[1]湖南农业大学农业环境保护资源所,湖南长沙410128

出　　处：《湖南农业科学》2013年第10期68-70,共3页Hunan Agricultural Sciences

摘　　要：选取湖南和北京两地的水稻田为试验对象,于2011、2012年采用液相色谱法研究了吡嘧磺隆在稻田环境中的消解动态。结果表明,吡嘧磺隆在稻田环境样品中的最低检出限为0.01 mg/kg;当添加浓度在0.01~1.00 mg/kg时,平均回收率范围在83.68%~101.9%;其消解动态符合一级化学反应动力学方程C t=C0e-kt,在两个地点的两年试验中,吡嘧磺隆在稻田水、稻田土壤和水稻植株中的平均半衰期分别为2.29、2.73、2.29 d。The paddyfields located in Hunan province and Beijing city were selected as experimental objects to study the degradation dynamics of pyrazosulfuron-ethyl in it. The results showed that the minimum detection limit of pyrazosulfuronethyl in paddyfield sample was 0.01 mg/kg; when adding concentration was 0.01 ~1.00 mg/kg, the average recovery rate ranged from 83.68% to 101.9%; the degradation dynamics of pyrazosulfuron-ethyl accorded with the first order chemical reaction kinetic equation Ct= C0e-kt, the average half-life of pyrazosulfuron-ethyl in paddyfield water, paddyfield soil and rice plant was 2.29, 2.73 and 2.29 d, respectively.

关 键 词：吡嘧磺隆 高效液相色谱 水稻 残留 消解 

分 类 号：X592[环境科学与工程—环境工程]