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UPLC-MS/MS检测氟吡菌酰胺在菜豆中的残留及消解动态 被引量:3

Residue and Dissipation Dynamic of Fluopyram in Kidney Beans Determined by UPLC-MS/MS
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摘要 通过改良的QuEChERS方法提取和分散固相萃取净化,建立了菜豆中氟吡菌酰胺及其代谢物BZM残留的高效液相色谱-串联质谱检测方法,并分析了氟吡菌酰胺及其代谢物在菜豆中的残留消解行为。结果表明:当菜豆样品中添加0.005~1 mg/kg的氟吡菌酰胺时,其平均回收率为91.5%~98.7%,RSD为2.3%~4.2%;BZM在菜豆中的平均回收率为90.5%~96.7%,RSD为3.3%~10.1%,表明该检测方法准确度和精密度较高,可以满足农残分析的要求;氟吡菌酰胺在菜豆上的消解半衰期为2.9 d,属于容易降解的农药。目前我国尚未对氟吡菌酰胺在菜豆上进行登记,建议加强菜豆农药登记和MRL的制定工作。 In this study,a modified DSPE method(QuEChERS)has been established for the determination of fluopyram and its metabolite BZM residues in kidney beans(Phaseolus vulgaris)by UPLC-MS/MS.In addition,the residual dissipation behavior of fluopyram and its metabolite BZM in kidney beans were analyzed through a field experiment.The results showed that at 0.005-1 mg/kg spiked levels,the average recovery of fluopyram in kidney beans was 91.5%-98.7%with RSDs of 2.3%-4.2%,and the average recovery of BZM was 90.5%-96.7%with RSDs of 3.3%-10.1%,indicating that the analytical method has high accuracy and precision,and can meet the requirement of fluopyram residue analysis.The analytical results of field trial data found the half-life of fluopyram in kidney beans was 2.9 days,which belongs to a biodegradable pesticide.At present,fluopyram in kidney beans has not been registered in China.It is recommended to strengthen the registration of pesticides and the formulation of MRL for kidney beans.
作者 李凯龙 姚燕霞 姜锦林 罗路云 陈武瑛 黄洪 熊浩 陈昂 LI Kai-long;YAO Yan-xia;JIANG Jin-lin;LUO Lu-yun;CHEN Wu-ying;HUANG Hong;XIONG Hao;CHEN Ang(Hunan Plant Protection Institute,Hunan Academy of Agricultural Sciences,Changsha 410125,PRC;Nanjing Institute of Environment Science,MEE,Nanjing 210042,PRC;Yangtze Normal University,Chongqing 408100,PRC)
出处 《湖南农业科学》 2022年第11期84-87,共4页 Hunan Agricultural Sciences
基金 长沙市自然科学基金项目(kq2202340) 湖南省农业科技创新资金项目(2022CX06) 国家自然科学基金项目(32202340)。
关键词 氟吡菌酰胺 超高效液相色谱串联质谱 菜豆 残留 消解 fluopyram UPLC-MS/MS kidney beans(Phaseolus vulgaris) residue dissipation
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