氟吡菌酰胺及其代谢物在烟草种植和加工过程中的降解特征  

Residue Degradation of Fluopyram and its Metabolites during Tobacco Planting and Processing

作　　者：谭菲菲 高政绪 高强 时军 赵玉松 陈丹[1] 林勇 TAN Feifei;GAO Zhengxu;GAO Qiang;SHI Jun;ZHAO Yusong;CHEN Dan;LIN Yong(Institute of Tobacco Research of CAAS,Qingdao 266101,China;Shandong Weifang Tobacco Co.,Ltd.,Weifang,Shandong 261061,China;Shandong Linyi Tobacco Co.,Ltd.,Linyi,Shandong 276003,China;Pingdu Branch of Shandong Qingdao Tobacco Co.,Ltd.,Pingdu,Shandong 266700,China;Zhenghe Branch of Nanping Tobacco Company,Zhenghe,Fujian 353600,China)

机构地区：[1]中国农业科学院烟草研究所,青岛266101 [2]山东潍坊烟草有限公司,山东潍坊261061 [3]山东临沂烟草有限公司,山东临沂276003 [4]山东青岛烟草有限公司平度分公司,山东平度266700 [5]南平市烟草公司政和分公司,福建政和353600

出　　处：《中国烟草科学》2021年第5期69-74,共6页Chinese Tobacco Science

基　　金：中国农业科学院基本科研业务费(1610232018006);南平市烟草公司项目(NYK2017-07-03)。

摘　　要：为探究氟吡菌酰胺及其代谢物AE C656948-Benzamide在烟草种植和加工过程中的残留降解特征,建立了QuEChERS-超高效液相色谱-串联质谱(QuEChERS-UPLC-MS/MS)法检测烟叶中氟吡菌酰胺及其代谢物残留量。结果表明,在0.05~10 mg/kg添加水平下,氟吡菌酰胺在鲜烟叶和干烟叶中的平均回收率分别为86%~94%和81%~95%,AE C656948-Benzamide在鲜烟叶和干烟叶中的平均回收率分别为85%~91%和83%~89%,相对标准偏差(RSD)均<10%,定量限(LOQ)均为0.05 mg/kg。氟吡菌酰胺在田间前3 d内消解率>50%,后期消解缓慢。烘烤过程中,氟吡菌酰胺的消解率为58.1%,AE C656948-Benzamide的消解率为52.9%,加工因子(Pf)为0.42~0.47。陈化360 d,氟吡菌酰胺的消解率为1.8%,AE C656948-Benzamide未发生降解,Pf为0.99~1.54。总之,烟叶中的氟吡菌酰胺和AE C656948-Benzamide在烟草种植和烘烤过程中降解明显,在陈化过程降解甚少。To investigate the residue degradation of fluopyram and its metabolite AE C656948-Benzamide during tobacco planting and processing,the QuEChERS-ultra performance liquid chromatography-tandem mass spectrometry(QuEChERS-UPLC-MS/MS)method was adopted to detect the residues of fluopyram and its metabolite in tobacco leaves.At addition levels of 0.05-10 mg/kg,the results showed that the average recoveries of fluopyram in fresh leaves and cured leaves were 86%-94%and 81%-95%,AE C656948-Benzamide were 85%-91%and 83%-89%,with relative standard deviations(RSD)less than 10%.The quantitative limits for fluopyram and AE C656948-Benzamide in fresh leaves and cured leaves were both 0.05 mg/kg.The degradation rate of fluopyram was more than 50%in the first 3 days,but it was slow after then.During curing the degradation rate of fluopyram residue was 58.1%and the degradation rate of AE C656948-Benzamide residue was 52.9%.The processing factors(Pf)were in the range of 0.42-0.47.The degradation rate of fluopyram was 1.8%and AE C656948-benzamide was not degraded within 360 days during aging.The Pf varied in the range of 0.99-1.54.In conclusion,fluopyram and AE C656948 benzamide degrade significantly during tobacco planting and baking,but rarely during aging.

关 键 词：氟吡菌酰胺 AE C656948-Benzamide 烟草 残留降解 加工因子 

分 类 号：S481.8[农业科学—农药学]