中文摘要：本文采用改进的QuEChERS方法与GC-MS法联用检测典型温室果蔬（番茄、黄瓜、辣椒）中氟吡菌酰胺的残留情况。根据一阶速率动力学方程，氟吡菌酰胺最大消散半衰期为5.7天。在7-21天的安全间隔期内，氟吡菌酰胺的残留量在0.0108-0.1603 mg/kg范围内，危害商数小于1，说明施用氟吡菌酰胺杀虫剂的果蔬暂时是安全的。
外文摘要：Fluopyram, a typical phenylamide fungicide, was widely applied to protect fruit vegetables from fungal pathogens-responsible yield loss. Highly linked to the ecological and dietary risks, its residual and metabolic profiles in the fruit vegetable ecosystem still remained obscure. Here, an approach using modified QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) extraction combined with GC-MS/MS analysis was developed to investigate fluopyram fate in the typical fruit vegetables including tomato, cucumber, pepper under the greenhouse environment. Fluopyram dissipated in accordance with the first-order rate dynamics equation with the maximum half-life of 5.7 d. Cleveage of fluopyram into 2-trifluoromethyl benzamide and subsequent formation of 3-chloro-5-(trifluoromethyl) pyridine-2-acetic acid and 3-chloro-5-(trifluoromethyl) picolinic acid was elucidated to be its ubiquitous metabolic pathway. Moreover, the incurrence of fluopyram at the pre-harvest interval (PHI) of 7-21 d was between 0.0108 and 0.1603 mg/kg, and the Hazard Quotients (HQs) were calculated to be less than 1, indicating temporary safety on consumption of the fruit vegetables incurred with fluopyram, irrespective of the uncertain toxicity of the metabolites. Taken together, our findings reveal the residual essential of fluopyram in the typical agricultural ecosystem, and would advance the further insight into ecological risk posed by this fungicide associated with its metabolites.
 
外文关键词：TANDEM MASS-SPECTROMETRY; SOLID-PHASE EXTRACTION; PESTICIDE-RESIDUES; LIQUID-CHROMATOGRAPHY; SOIL; MICROORGANISMS; PENTHIOPYRAD; DISSIPATION; SENSITIVITY; EXPOSURE
作者：Wei, Peng; Liu, Yanan; Li, Wenzhuo; Qian, Yuan; Nie, Yanxia; Kim, Dongyeop; Wang, Mengcen
作者单位：Zhejiang Univ, Inst Pesticide & Environm Toxicol, 866 Yuhangtang Rd, Hangzhou 310058, Zhejiang, Peoples R China.
期刊名称：SCIENTIFIC REPORTS
期刊影响因子：5.228
出版年份：2016
出版刊次：9
点击下载：广泛应用于蔬菜生态系统中的典型苯基酰胺类杀菌剂——氟吡菌酰胺的风险评估