广枯灵中噁霉灵在中药材头花蓼上的残留消解动态  

Degradation Dynamics of Hymexazol in Polygonum capitatum Buch

作　　者：班睿[1] 宋宝安[1] 杨松[1] 胡德禹[1] 王俊[1] 曾松[1] 黄荣茂[1] 

机构地区：[1]贵州大学精细化工研究开发中心,绿色农药和生物工程教育部重点实验室,贵阳550025

出　　处：《农药》2007年第3期187-188,201,共3页Agrochemicals

基　　金：国家计委高技术产业化项目(计高技[2000]2240);贵州省省长基金(黔科教办[2004]0712);贵州省自然科学基金(20043020)

摘　　要：采用柱前衍生气相色谱法测定广枯灵中噁霉灵在中药材头花蓼上的残留消解动态和最终残留量。实验结果表明,广枯灵中噁霉灵在头花蓼中消解较快,按推荐剂量使用后,半衰期为2.8～3.0d,属于易降解农药,按照推荐剂量使用安全。Degradation dynamics and final residues of hymexazol in Polygonum capitatum Buch were estimated by GC-FPD with pre-column derivatization. The results showed that the hymexazol in Polygonum capitatum Buch degraded fast. When the Guangkuling （3% hymexazol-metalaxyl aqueous solution） was applied on Polygonum capitatum Buch by recommendation concentration, their half-live were 2.8-3.0d. The hymexazol residue in Polygonum capitatum Buch was below the MRLs when guangkuling was used on Polygonum capitatum Buch by recommendation concentration.

关 键 词：噁霉灵 头花蓼 残留 消解动态 

分 类 号：TQ450.26[化学工程—农药化工]