北京林地食用菌4种拟除虫菊酯类农药的残留监测和安全性评价  

Residue Monitoring and Safety Evaluation of 4 Pyrethroid Pesticides in Edible Fungus in Beijing Plantation Woodlands

作　　者：贺敏[1,2,3] 刘宇[1] 王守现[1] 贾春虹[1,2] 马志宏 郑永权[3] 

机构地区：[1]北京市农林科学院植物保护环境保护研究所,北京100097 [2]北京农业质量标准与检测技术研究中心,北京100097 [3]中国农业科学院植物保护研究所,北京100193

出　　处：《农药》2013年第11期818-820,831,共4页Agrochemicals

基　　金：北京市农林科学院青年科研基金(QN201205);现代农业产业技术体系北京市食用菌产业创新团队项目

摘　　要：【目的】明确北京林地食用菌中氟氯氰菊酯、氯氰菊酯、溴氰菊酯和氰戊菊酯的残留水平。【方法】在北京市通州区、房山区、平谷区、昌平区林地共采集食用菌样品54个，用乙腈提取，N-丙基乙二胺（PSA）分散固相萃取剂净化，气相色谱配备电子捕获检测器分离测定，外标法定量。[结果]方法的平均回收率为69％-107％，相对标准偏差为1，8％-11．7％。采集的样品中，溴氰菊酯和氰戊菊酯的残留量均小于0．01mg／kg，氟氯氰菊酯的检出率为20．4％，残留量为0．010-0．230mg／kg，氯氰菊酯的检出率为68．5％，残留量为0．011-0．146mg／kg。【结论】我国规定氟氯氰菊酯、氯氰菊酯、溴氰菊酯和氰戊菊酯在食用菌中的最大残留限量分别为0．3、0．5、0．2、0．2mg／kg，以此为依据，北京林地食用菌中4种拟除虫菊酯类农药的残留是安全的。[Aims] The aim was to collect and analyze the data of 4 pyrethroid pesticides residue in edible fungus in Beijing plantation woodland. [Methods] A total of 54 samples were collected from Tongzhou District, Fangshan District, Pinggu District and Changping District in Beijing. Samples were extracted by acetonitrile, cleaned by PSA dispersive solid- phase extraction, separated by GC-ECD and quantified with external standard method. [Results] The method met with the requirement of pesticide residues analysis, the mean recoveries of the method ranged from 69 to 107%, the relative standard deviation were ranged from 1.8 to 11.7%. The minimumdetection limit of deltamethrinand fenvalerate residues were below 0.01 mg/kg. The residues of cyfluthrinranged from 0.010 to 0.230 mg/kg with the detection rate of 20.4%, and the residuesof cypermethrinranged from 0.011 to 0.146 mg/kg with the detection rate of 68.5%. [Conclusions] In China, the maximum residue limit of cyfluthrin, cypermethrin, deltamethrin and fenvalerate in edible fungus were 0.3, 0.5, 0.2 and 0.2 mg/kg, respectively. For the edible fungus in Beijing plantation woodland, the 4 pyrethroid pesticides residues were safe in 54 samples because the residue values either absent or compliant with the maximum residue limit.

关 键 词：食用菌 氯氰菊酯 氟氯氰菊酯 氰戊菊酯 溴氰菊酯 

分 类 号：TQ450.263[化学工程—农药化工]