| GC-MS/MS法测定草莓中吡唑醚菌酯残留量及安全评价 |
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| 引用本文： | 喻歆茹,路彩红,徐玲英,宁 波,张昌朋,何红梅,王祥云,赵学平,李艳杰. GC-MS/MS法测定草莓中吡唑醚菌酯残留量及安全评价[J]. 植物保护, 2021, 47(4): 141-147 |
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| 作者姓名： | 喻歆茹 路彩红 徐玲英 宁 波 张昌朋 何红梅 王祥云 赵学平 李艳杰 |
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| 作者单位： | 1. 省部共建农产品质量安全危害因子与风险防控国家重点实验室(筹), 农业农村部农药残留检测重点实验室, 浙江省农业科学院农产品质量标准研究所, 杭州 310021; 2. 贵州省毕节市农业生态环境与资源保护站, 毕节 553199 |
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| 基金项目： | 国家重点研发计划(2016YFD0200204, 2019YFC1605605); 浙江省基础公益计划(LGN21C140006) |
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| 摘 要： | 本文建立了气相色谱-串联质谱法(gas chromatography-tandem mass spectrometry,GC-MS/MS)测定草莓中吡唑醚菌酯的含量,通过探究吡唑醚菌酯在草莓中的残留及消解动态评估吡唑醚菌酯的膳食风险.样品经1.0％甲酸乙腈提取,Cleanert MAS-Q净化管净化,DB-5 MS毛细...
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| 关 键 词： | 吡唑醚菌酯 GC-MS/MS 残留 草莓 风险概率 |
| 收稿时间： | 2020-05-24 |
| 修稿时间： | 2020-06-29 |
Residue analysis and safety evaluation of pyraclostrobin in strawberry by GC-MS/MS |
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| YU Xinru,LU Caihong,XU Lingying,NING Bo,ZHANG Changpeng,HE Hongmei,WANG Xiangyun,ZHAO Xueping,LI Yanjie. Residue analysis and safety evaluation of pyraclostrobin in strawberry by GC-MS/MS[J]. Plant Protection, 2021, 47(4): 141-147 |
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| Authors: | YU Xinru LU Caihong XU Lingying NING Bo ZHANG Changpeng HE Hongmei WANG Xiangyun ZHAO Xueping LI Yanjie |
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| Affiliation: | 1. State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products (in prepared) MARA Key Laboratory for Pesticide Residue Detection, Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; 2. Bijie Agricultural Ecological Environment and Resource Protection Station, Guizhou Province, Bijie 553199, China |
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| Abstract: | A gas chromatography-tandem mass spectrometry (GC-MS/MS) analytical method was established for determination of pyraclostrobin residue in strawberry, and the dietary risk of pyraclostrobin was assessed by exploring the residue and digestion dynamics of pyraclostrobin. Sample was extracted with acetonitrile (acidified with formic acid 1.0%), cleaned up by Cleanert MAS-Q, isolated by the GC system equipped with DB-5 MS UI fused silica capillary column, and detected with electron ionization in a multiple reaction monitoring mode (MRM). The results indicated that pyraclostrobin had a good linear relationship in the range of 0.001-0.200 mg/L ( r =0.999 8). At the three spiking levels from 0.02 to 2.0 mg/kg, the average recoveries of pyraclostrobin in strawberry were in the acceptable ranges of 96.8%-101.4%, with the RSDs of the method ranged from 1.8% to 3.3%. The limit of quantitation was 0.020 mg/kg. The digestion state of pyraclostrobin in strawberry accorded with the first-order degradation kinetics, and the half-life of digestion was 2.2-3.0 d. The national estimated daily intake of pyraclostrobin at fifth day after the last application was 1.34 mg, and the risk probability was 70.9%, indicating that the long-term dietary intake risk of pyraclostrobin would not cause unacceptable risks to human health. |
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| Keywords: | pyraclostrobin GC-MS/MS residue strawberry risk probability |
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