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| Residues and dietary risk assessment of fluopyram and pyraclostrobin in grape |
| Received:August 30, 2023 |
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| KeyWord:fluopyram;pyraclostrobin;grape;residue;dietary risk assessment |
| Author Name | Affiliation | E-mail | | OU Jiang | National Engineering Research Center for Agrochemicals/Hunan Province Key Laboratory for Agrochemicals, Hunan Research Institute of Chemical Industry, Changsha 410014, China
Hunan Safety Science and Technology Co., Ltd., Changsha 410014, China | | | LIANG Ji | National Engineering Research Center for Agrochemicals/Hunan Province Key Laboratory for Agrochemicals, Hunan Research Institute of Chemical Industry, Changsha 410014, China
Hunan Safety Science and Technology Co., Ltd., Changsha 410014, China | | | SONG Qiangyong | National Engineering Research Center for Agrochemicals/Hunan Province Key Laboratory for Agrochemicals, Hunan Research Institute of Chemical Industry, Changsha 410014, China
Hunan Safety Science and Technology Co., Ltd., Changsha 410014, China | | | YAN Jiao | National Engineering Research Center for Agrochemicals/Hunan Province Key Laboratory for Agrochemicals, Hunan Research Institute of Chemical Industry, Changsha 410014, China
Hunan Safety Science and Technology Co., Ltd., Changsha 410014, China | | | YANG Zhifu | National Engineering Research Center for Agrochemicals/Hunan Province Key Laboratory for Agrochemicals, Hunan Research Institute of Chemical Industry, Changsha 410014, China
Hunan Safety Science and Technology Co., Ltd., Changsha 410014, China | | | XIONG Feng | National Engineering Research Center for Agrochemicals/Hunan Province Key Laboratory for Agrochemicals, Hunan Research Institute of Chemical Industry, Changsha 410014, China
Hunan Safety Science and Technology Co., Ltd., Changsha 410014, China | | | CHEN Lihua | National Engineering Research Center for Agrochemicals/Hunan Province Key Laboratory for Agrochemicals, Hunan Research Institute of Chemical Industry, Changsha 410014, China
Hunan Safety Science and Technology Co., Ltd., Changsha 410014, China | | | OU Xiaoming | National Engineering Research Center for Agrochemicals/Hunan Province Key Laboratory for Agrochemicals, Hunan Research Institute of Chemical Industry, Changsha 410014, China
Hunan Safety Science and Technology Co., Ltd., Changsha 410014, China | xmouhn@163.com |
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| Abstract: |
| To determine the residue risks of fluopyram and pyraclostrobin on grapes, the supervised residue trials were conducted in 10 regions within 1 year. A highly efficient and simple method was developed for the determination of fluopyram and pyraclostrobin in grapes using high-performance liquid chromatography（HPLC）. The results demonstrated that a good linear relationship between the peak area and the concentration of fluopyram and pyraclostrobin was observed in the range of 0.1-20.0 mg·L-1 with a correlation coefficient greater than 0.99. The average recoveries of fluopyram and pyraclostrobin in grapes at three spiked levels of 0.05, 0.50, and 2.00 mg·kg-1 were 88.1%-112.3% and 90.5%-101.5%, with the relative standard deviations（RSDs）ranged from 3.1%-8.2% and 3.5%-9.1%, respectively. The limits of quantification（LOQs）of the two analytes in grape were all 0.05 mg·kg-1. The supervised trial median residues（STMR）of fluopyram and pyraclostrobin in grapes were 0.16 and 0.12 mg ·kg-1, and the highest residues（HR）were 1.44 and 1.48 mg ·kg-1, respectively, at 14 d after the last application. According to the dietary risk assessment, the contribution rates of fluopyram and pyraclostrobin in grapes to the long-term dietary risk of the general population were 0.142% and 0.036%, the short-term dietary intake risk quotients were 7.8% and 5.7%, and the short-term dietary intake risk quotients for children aged 1-6 years were 19.6% and 14.4%, respectively. These results show that the residues of fluopyram and pyraclostrobin in grapes would not pose significant health risks to children aged 1-6 years and the general population when fluopyram and pyraclostrobin formulation are applied at the recommended dose. |
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