BACKGROUND: This survey conducted on agricultural products in Incheon for the past three years from 2016 to 2018 to analyze the characteristics of residual pesticide detection and to monitor the use of pesticides.
METHODS AND RESULTS: Residual pesticides were analyzed for a total of 5,937 agricultural products in Samsan wholesale market, traditional market and large retailers in Incheon. Samples were analyzed by multi class pesticide method using GC-MS/MS, LC-MS/MS, GC-ECD/NPD, UHPLC. In 59 cases(1.0%) residual pesticide was detected improperly and these cases exceeded maximum residue limits(MRLs).
CONCLUSION: The ratio of violative agricultural products was similar to around 1.0% per year, but the residual pesticide detection rate including sample within the limit was gradually decreasing to 17.9%, 12.6% and 11.2%. The frequency of violative residual pesticides was high in order of Diazinon, Chlorpyrifos, Iprodione etc. Residual pesticide monitoring is needed in the future continuously, as violations in agricultural products distributed in Incheon are shown at a similar level every year.