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百菌清和福美双在蘑菇上的残留研究
引用本文:王会利,陈长龙,胡继业,陈旭艳,李建中.百菌清和福美双在蘑菇上的残留研究[J].农药学学报,2006,8(3):283-287.
作者姓名:王会利  陈长龙  胡继业  陈旭艳  李建中
作者单位:1.中国科学院生态环境研究中心,北京100085
摘    要:建立了杀菌剂30%菇丰(12%百菌清和18%福美双)可湿性粉剂在蘑菇中的残留分析方法,并用该方法研究了其在蘑菇中的消解动态和最终残留。样品分别经GC-ECD和HPLC-UV检测。方法的添加回收率分别为90.19%~99.11%和73.94%~86.47%;变异系数分别为0.9%~3.2%和2.6%~15.8%;最小检出量分别为1×10-12g和6×10-9g;最低检测浓度分别为0.01和0.3mg/kg。田间残留动态试验结果表明,百菌清和福美双在蘑菇中的半衰期分别为2.5d和4.2h。在最高推荐剂量(1 800g/hm2)和推荐剂量2倍的条件下,施药12次,施药后第5d,蘑菇中百菌清残留量高于我国规定的MRL值(1mg/kg);而施药后2d福美双残留量已低于MRL值(3mg/kg)。试验结果表明,百菌清不适于在蘑菇中使用,而福美双则可以使用。

关 键 词:杀菌剂    百菌清    福美双    蘑菇    残留试验
文章编号:1008-7303(2006)03-0283-05
收稿时间:07 4 2006 12:00AM
修稿时间:08 31 2006 12:00AM

Research on Residues of Chlorothalonil and Thiram in Mushroom
WANG Hui-li,CHEN Chang-long,HU Ji-ye,CHEN Xu-yan and LI Jian-zhong.Research on Residues of Chlorothalonil and Thiram in Mushroom[J].Chinese Journal of Pesticide Science,2006,8(3):283-287.
Authors:WANG Hui-li  CHEN Chang-long  HU Ji-ye  CHEN Xu-yan and LI Jian-zhong
Institution:1.Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
Abstract:The methods were developed to determine the residues of chlorothalonil and thiram in mushroom,their dissipation rates and final residues were also studied.Chlorothalonil was determined by GC with ECD-detector,and thiram was determined by HPLC with UV-detector.The average recoveries and coefficient variation of the methods were 90.19%~99.11% and0.9%~3.2% for chlorothalonil,and 73.94%~86.47% and 2.6%~15.8% for thiram,respectively.The limit of detection for chlorothalonil and thiram were 1×10-12 g and 6×10-9 g,and the limit of quantification were(0.01 mg/kg) and 0.3 mg/kg,respectively.The results showed that the half-lives of chlorothalonil and thiram in mushroom were 2.5 days and 4.2 hours,respectively,at double of the recommended dosage.The study revealed that the residues of chlorothalonil in mushroom were above the MRL in China (1 mg/kg) after 5 days at the recommended dosages(1 800 g/hm2) and double of that, however,the residues of thiramin mushroom were below the MRL(3 mg/kg) after 2 days.The results indicated that chlorothalonil is unsuitable for mushroom in a greenhouse,but thiram is permitted to applicate on mushroom.
Keywords:fungicide  chlorothalonil  thiram  mushroom  residue test
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