井冈霉素在水稻和土壤上残留及消解动态  

Residue and Degradation Dynamics of Jingangmycin in Rice and Soil

作　　者：杜良伟[1] 徐秋红[1] 王彦辉[2] 

机构地区：[1]广西大学化学化工学院,南宁530004 [2]湖南农业大学农药研究所,长沙410128

出　　处：《农药》2012年第4期284-286,共3页Agrochemicals

基　　金：广西大学博士启动基金(XB20090080)

摘　　要：[目的]评价井冈霉素在水稻田环境中的残留动态和环境安全性。[方法]2009—2010年进行了11%井冈.己唑醇悬浮剂在水稻田残留试验。样品用甲醇与水（体积比9∶1）提取,经C18固相萃取小柱净化,液相色谱（UV）检测,外标法定量。[结果]井冈霉素在湖南长沙、福建莆田、广西南宁土壤中的半衰期分别为1.6－2.9、1.5－1.6、1.7－1.9 d;在稻田水中半衰期分别为2.9－4.3、2.3－2.9、1.8－3.0 d;在水稻植株中半衰期分别为1.7、1.6－1.7、1.6 d;收获水稻中井冈霉素的残留量均未检出。[结论]推荐剂量下11%井冈.己唑醇悬浮剂在水稻田是安全的。[Aims] Evaluated the degradation dynamics and environmental safety ofjinggangmycin in rice ecosystem. [Methods] The field trials on the degradation and final residue ofjinggangmycin, hexaconazole 11% SC were carried out in Htman, Fujian and Guangxi province in 2009-2010. The samples were extracted with methanol-water （9 ： 1, by vol）, concentrated and cleaned up with Cj8 solid phase extraction column, determined using HPLC equipped with UV detector and external standard method. [Results] The results showed that the half-lives ofjinggangmycin were 1.6-2.9, 1.5-1.6, 1.7-1.9 d in soil, 2.9-4.3, 2.3-2.9, 1.8-3.0 d in water and 1.7, 1.6-1.7, 1.6 d in rice of Hunan, Fujian and Guangxi province during two years, respectively. No jinggangmycin residues were detected at harvest season. [Conclusions] In conclusion, jinggangrnycin-hexaconazole 11% SC was safe in rice at recommended dose.

关 键 词：井冈霉素 水稻 残留分析 消解动态 

分 类 号：TQ450.1[化学工程—农药化工]