| 梨果实中百菌清的残留降解动态及安全性分析 |
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| 引用本文： | 王吉腾,陶万强,张志勇,杨宝东,孙淑玲,王合.梨果实中百菌清的残留降解动态及安全性分析[J].北京农学院学报,2009,24(2). |
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| 作者姓名： | 王吉腾 陶万强 张志勇 杨宝东 孙淑玲 王合 |
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| 作者单位： | 1. 北京农学院植物科学技术学院,北京,102206
2. 北京市林业保护站,北京,100029 |
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| 基金项目： | 北京市科技计划项目，北京市教委科技创新平台项目，北京市市属市管高校人才强教计划项目，北京市农委科技项目 |
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| 摘 要： | 采用毛细管气相色谱(GC-ECD)法研究梨上百菌清的残留动态及套袋对百菌清残留的影响,测定方法的最低检出浓度为0.01 mg/kg,其平均添加回收率为70.3%~96.2%,RSD为3.6%~6.2%。通过生长季节残留浓度的检测对北京郊区常规管理条件下百菌清的安全性进行分析。结果表明:百菌清在梨上的残留消解符合一级动力学方程。75%百菌清(chlorothalonil)可湿性粉剂推荐剂量稀释500倍液(A.I.1 500 mg/kg)施药1次,降解半衰期为3.22,1 d后残留低于1.0 mg/kg;加倍剂量稀释250倍液(A.I.3 000 mg/kg)施药1次,降解半衰期为3.53,3.30 d后残留低于1.0 mg/kg;A.I.1 500 mg/kg施药3次,7 d后残留低于1.0 mg/kg;A.I.3 000mg/kg施药3次,14 d后残留低于1.0 mg/kg。百菌清主要残留于梨皮中,套袋后用药,采收时百菌清残留低于中国、欧盟、韩国最高残留限量(1.0 mg/kg)。
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| 关 键 词： | 百菌清 梨 残留 套袋 安全性分析 |
The Residual Degradation Behaviors and Safety Analysis of Chlorothalonil in Pears |
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| WANG Ji-teng,TAO Wan-qiang,ZHANG Zhi-yong,YANG Bao-dong,SUN Shu-ling,WANG He.The Residual Degradation Behaviors and Safety Analysis of Chlorothalonil in Pears[J].Journal of Beijing Agricultural College,2009,24(2). |
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| Authors: | WANG Ji-teng TAO Wan-qiang ZHANG Zhi-yong YANG Bao-dong SUN Shu-ling WANG He |
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| Institution: | 1.Department of Plant Science and Technology;Beijing University of Agriculture;Beijing 102206;China;2.Beijing Forestry Protection Station;Beijing 100029;China |
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| Abstract: | The residual dynamics of chlorothalonil and effects of bagging on chlorothalonil residues in pear grown in open-fields were studied using gas chromatography with ECD.And the safety of chlorothalonil under the conventional management was analyzed through predicting residual concentrations during the growing season.The minimum detectable concentration by the GC method was 0.01 mg/kg,the average recovery rates were among 70.3%~96.2%,and the RSD were 3.6%~6.2%.The results showed that the degradation dynamic equ... |
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| Keywords: | chlorothalonil pear residue bagging safety analysis |
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