Comparative Analysis of Pesticide Residues in Agricultural Products in Circulation in Gyeonggi-do Before and After Positive List System Enforcement

Song, S.H.; Kim, K.Y.; Kim, Y.S.; Ryu, K.S.; Kang, M.S.; Lim, J.H.; Yoo, N.Y.; Han, Y.L.; Choi, H.J.; Kang, C.W.; Kim, Y.H.; Seo, J.H.; Choi, O.K.

Comparative Analysis of Pesticide Residues in Agricultural Products in Circulation in Gyeonggi-do Before and After Positive List System Enforcement

2021

In order to confirm the impact of the Positive List System (PLS) being applied to all agricultural products from January 1, 2019, we analyzed 28,693 points of inspection-related data on agricultural products distributed in Gyeonggi-do from 2018 to 2020. The ratio of cases exceeding the standard for the total inspection performance was 1.0% in 2018, 1.2% in 2019, and 1.2% in 2020. Out of the 114 cases exceeding the standard in 2019, 55 were applied on a Maximum Residue Limit (MRL) of 0.01 mg/kg, and out of the 115 cases exceeding the standard in 2020, 66 were applied on a MRL of 0.01 mg/kg. To improve this, it seems necessary to manage unintentional pollution, conventional use for unregistered crops, and illegal pesticides. Fluquinconazole detection resulted from unintentional contamination, and diazinon, chlorothalonil, and methabenzthiazuron detection resulted from conventional use in unregistered crops. Chinomethionat is a pesticide component that was discarded in the past and its current use has been attributed to the smuggling of pesticides. This study and future monitoring data can be used as reference data for system supplementation and on-site management reinforcement.

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