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当前位置: 首页 > 文章 > 甲氰菊酯和氰戊菊酯在芥蓝中的残留及其膳食风险评估 云南农业大学学报(自然科学) 2018 (6) 1120-1126
Position: Home > Articles > Residue and Dietary Intake Risk Assessment of Fenpropathrin and Fenvalerate in Chinese kale Journal of Yunnan Agricultural University(Natural Science) 2018 (6) 1120-1126

甲氰菊酯和氰戊菊酯在芥蓝中的残留及其膳食风险评估

作  者：
赵欣;邓毅书;浦恩堂;代雪芳;李文希;毛佳
单  位：
云南省农业科学院农业环境资源研究所;云南农业大学资源与环境学院
关键词：
甲氰菊酯;氰戊菊酯;芥蓝;残留;膳食风险评估
摘  要：
【目的】研究甲氰菊酯和氰戊菊酯在芥蓝中的消解动态。【方法】通过田间试验和气相色谱(GCECD)检测。【结果】甲氰菊酯和氰戊菊酯在芥蓝和土壤中的消解动态均符合一级动力学方程,甲氰菊酯在芥蓝中的半衰期为0.72～1.6 d,在土壤中为7.2～8.2 d;氰戊菊酯在芥蓝中的半衰期为1.2～4.6 d,在土壤中为6.1～23.4 d,均属于易消解农药。甲氰菊酯乳油和氰戊菊酯乳油分别按最高推荐使用剂量和1.5倍最高推荐使用剂量施药3～4次,距末次施药后5 d,收获的芥蓝中甲氰菊酯的残留量低于1.54 mg/kg,膳食风险评估风险商值(RQ)为0.407;距末次施药后7 d,收获的芥蓝中氰戊菊酯的残留量低于1.14 mg/kg,风险商值为0.452,都处于安全水平。【结论】建议在使用20%甲氰菊酯乳油和20%氰戊菊酯乳油防治芥蓝虫害时,甲氰菊酯用药量为90 g a.i/hm~2,氰戊菊酯为120 g a.i/hm~2,最多施用3次,安全间隔期分别为5 d和7 d。
译  名：
Residue and Dietary Intake Risk Assessment of Fenpropathrin and Fenvalerate in Chinese kale
作  者：
ZHAO Xin;DENG Yishu;PU Entang;DAI Xuefang;LI Wenxi;MAO Jia;College of Resources and Environment,Yunnan Agricultural University;Institute of Agro-Environmental Resources,Yunnan Agricultural Science;
单  位：
ZHAO Xin%DENG Yishu%PU Entang%DAI Xuefang%LI Wenxi%MAO Jia%College of Resources and Environment,Yunnan Agricultural University%Institute of Agro-Environmental Resources,Yunnan Agricultural Science
关键词：
fenpropathrin;;fenvalerate;;Chinese kale;;residue;;dietary intake risk assessment
摘  要：
[Purpose]The aim of this study was to investigate the residue dissipation of fenpropathrin and fenvalerate in Chinese kale and soil under open field conditions.[Method]The methods for determination of fenpropathrin and fenvalerate were developed and validated using GC-ECD, based on which, the dynamics of both two pesticides were investigated via field trials.[Results]The dissipation trends of fenpropathrin and fenvalerate in Chinese kale and soil were fitted to the first order kinetics with half-life of 0.72-1.6 d and 1.2-4.6 d in Chinese kale, and of 7.2-8.2 d and 6.1-23.4 d in soil, respectively, both of which belonged to the pesticide that was easy to be degraded. According to the terminal residue results, the fenpropathrin EC and fenvalerate EC were applied at a recommended dosage and at 1.5 times the recommended dosage for 3 to 4 times, the residues of fenpropathrin in Chinese kale was lower than 1.54 mg/kg with a risk quotient(RQ) of 0.407 on 5 d after the last application. The residues of fenvalerate was lower than 1.14 mg/kg with a RQ of 0.452 on 7 d after the last application, indicating that the risk was not significant.[Conclusion]Based on the results of risk assessment, it is recommended that 20% fenpropathrin EC used at a dose of 90 g a.i/hm~2 and 20% fenvalerate EC used at a dose 120 g a.i/hm~2 in Chinese kale, the application time do not exceed 3 times, and the pre-harvest intervals are 5 d and 7 d for fenpropathrin and fenvalerate, respectively.

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