[1]王运儒,秦玉燕,杨秀娟,等.40％氯虫·噻虫嗪水分散粒剂在辣椒及土壤中的残留消解动态[J].江苏农业学报,2018,(01):207-212.[doi:doi:10.3969/j.issn.1000-4440.2018.01.030]
　WANG Yun-ru,QIN Yu-yan,YANG Xiu-juan,et al.Dissipation of chlorantraniliprole and thiamethoxam in pepper and soil after field application in the form of 40% water dispersible granules[J].,2018,(01):207-212.[doi:doi:10.3969/j.issn.1000-4440.2018.01.030]
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40％氯虫·噻虫嗪水分散粒剂在辣椒及土壤中的残留消解动态()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2018年01期
页码:
207-212
栏目:
加工贮藏·质量安全
出版日期:
2018-02-25

文章信息/Info

Title:
Dissipation of chlorantraniliprole and thiamethoxam in pepper and soil after field application in the form of 40% water dispersible granules
作者:
王运儒; 秦玉燕; 杨秀娟; 马婧; 邓有展; 时鹏涛; 农耀京; 陆仲烟; 吴凤
（广西壮族自治区亚热带作物研究所，农业部农产品质量安全风险评估实验室＜南宁＞，农业部亚热带果品蔬菜质量监督检验测试中心，广西南宁530001）
Author(s):
WANG Yun-ru; QIN Yu-yan; YANG Xiu-juan; MA Jing; DENG You-zhan; SHI Peng-tao; NONG Yao-jing; LU Zhong-yan; WU Feng
(Guangxi Subtropical Crops Research Institute, Laboratory of Quality Risk Assessment for Agro-products＜Nanning＞, Ministry of Agriculture, Quality Supervision and Testing Center of Subtropical Fruit and Vegetable, Ministry of Agriculture, Nanning 530001, C
关键词:
氯虫苯甲酰胺; 噻虫嗪; 超高压液相色谱-串联质谱（UPLC-MS）; 辣椒; 残留; 消解动态
Keywords:
chlorantraniliprole; thiamethoxam; ultra performance liquid chromatography-tandem mass spectrometry; pepper; residue; dissipation
分类号:
S481.8;TQ450.26
DOI:
doi:10.3969/j.issn.1000-4440.2018.01.030
文献标志码:
A
摘要:
为了明确40%氯虫·噻虫嗪水分散粒剂在辣椒和土壤中的消解动态及残留规律，用乙腈匀浆提取辣椒和土壤样品，经N-丙基乙二胺(PSA)、C18分散固相萃取剂净化，超高压液相色谱-串联质谱测定。结果表明，在辣椒植株和土壤中添加氯虫苯甲酰胺和噻虫嗪 0.020～2.000 mg/kg，其平均回收率为 88.5%～101.1%，相对标准偏差(RSD)为 2.1%～8.3%，氯虫苯甲酰胺和噻虫嗪在辣椒中的定量限（LOQ）均为0.005 mg/kg。田间残留试验结果表明，氯虫苯甲酰胺和噻虫嗪在辣椒及土壤中的残留消解动态均符合一级动力学反应模型。氯虫苯甲酰胺在辣椒和土壤中的半衰期分别为5.0 d 和4.8 d，噻虫嗪在辣椒和土壤中的半衰期分别为6.6 d和4.5 d。按照推荐剂量和1.5倍推荐剂量对辣椒施用40%氯虫·噻虫嗪水分散粒剂，最后一次施药后3.0 d，氯虫苯甲酰胺和噻虫嗪在辣椒中的残留量分别为0.912 mg/kg和0.627 mg/kg，低于欧盟规定氯虫苯甲酰胺和噻虫嗪在辣椒中的最大残留量。
Abstract:
To determine the residue and dissipation of chlorantraniliprole and thiamethoxam in pepper and soil, the samples were extracted by acetonitrile, then cleaned by PSA and C18 in the form of dispersive solid-phase extraction, thereafter, the extract was ready for the analysis of liquid chromatography and tandem mass spectrometry. The results showed that the limits of quantification (LOQ) of chlorantraniliprole and thiamethoxam in pepper were both 0.005 mg/kg. For the spiked sample, in the range of 0.020 mg/kg to 2.000 mg/kg, the recoveries of both pesticides reached to 88.5%-101.1% and the relative standard deviation varied from 2.1% to 8.3%. The dissipation of chlorantraniliprole and thiamethoxam in pepper and soil were all fitted in the first-order kinetics equation. The half-lives of chlorantraniliprole in pepper and soil were 5.0 d and 4.8 d, and those of thiamethoxam were 6.6 d and 4.5 d, respectively． For the field trial, the recommended dosage and 1.5 times recommended dosage of 40% chlorantraniliprole and thiamethoxam water dispersible granules were sprayed two times with three days pre-harvest interval. The results showed that the harvest residues of chlorantraniliprole and thiamethoxam in pepper were 0.912 mg/kg and 0.627 mg/kg, and were below the maximum residue limit provided by European Union.

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备注/Memo

备注/Memo:
收稿日期：2017-06-28 基金项目：国家蔬菜质量安全风险评估项目（GJFP201700203） 作者简介：王运儒（1986-），男，广西南宁人，硕士，助理研究员，主要从事农产品质量安全检测与风险评估研究。(Tel)18577836959；(E-mail)wangaa2008@163.com 通讯作者：农耀京，(E-mail)2455889212@qq.com
更新日期/Last Update: 2018-03-06