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咪鲜胺及其代谢物在水稻中的残留检测方法及残留动态
引用本文:韩丽君,钱传范,江才鑫,王武杰.咪鲜胺及其代谢物在水稻中的残留检测方法及残留动态[J].农药学学报,2005,7(1):54-58.
作者姓名:韩丽君  钱传范  江才鑫  王武杰
作者单位:1.中国农业大学 理学院,北京 100094
摘    要:采用气相色谱电子捕获检测(GC-ECD)研究了杀菌剂咪鲜胺及其代谢物在水稻中的总残留量检测方法。经简单净化后将咪鲜胺及其代谢物在高温下与吡啶盐酸盐反应,转化为2,4,6-三氯苯酚进行测定。咪鲜胺在各样品中的添加回收率为72.9% ~103.4%,变异系数在1.46% ~9.38%之间。残留动态研究表明,咪鲜胺在水稻苗中消解较快,半衰期仅为3.4 d;到水稻收获时,在用166.6 mg/L浸种处理后的稻米和稻秆中分别检出了0.025和0.056 mg/kg的残留量,其他样本中均未检出咪鲜胺的残留。

关 键 词:咪鲜胺    残留动态    水稻    气相色谱电子捕获检测    2  4  6-三氯苯酚
文章编号:1008-7303(2005)01-0054-05
收稿时间:2004/5/26 0:00:00
修稿时间:2004年5月26日

Residue Detection and Degradation of Prochloraz and its Metabolites in Rice
HAN Li-jun,QIAN Chuan-fan,JIANG Cai-xin and WANG Wu-jie.Residue Detection and Degradation of Prochloraz and its Metabolites in Rice [J].Chinese Journal of Pesticide Science,2005,7(1):54-58.
Authors:HAN Li-jun  QIAN Chuan-fan  JIANG Cai-xin and WANG Wu-jie
Institution:1.College of Science, China Agricultural University, Beijing 100094,China
Abstract:Residue detection and degradation of prochloraz 45% EC and its metabolites in rice were investigated and their residues were determined with GC-ECD. After simple cleaning-up of the samples, prochloraz and its metabolites reacted with the pyridine chloride at high temperature, the product 2,4,6-trichlorophenol was then detected. The fortified recoveries of prochloraz were 72.9% ~103.4%, the CVs were 1.46% ~9.38%. The results obtained from two years experiments showed that the degradation of prochloraz in rice seedling was fast, and its half-life was only 3.4 days. After a growing season, only in the sample from high dosage of application, the residue in rice grain and rice straw were 0.025 and 0.056 mg/kg respectively, no detectable residue was found in the other samples.
Keywords:prochloraz  residue dynamic  rice  GC-ECD  2  4  6-trichlorophenol
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