Investigation and analysis of banned and restricted pesticide residues incommercial vegetables in Inner Mongolia from 2015 to 2021

ObjectiveTo understand the residue status of banned and restricted pesticides in vegetables sold in Inner Mongolia， and to provide scientific basis for relevant departments to formulate targeted and effective supervision and control countermeasures for banned and restricted pesticides.MethodsFrom 2015 to 2021， vegetables were collected and sold in 12 league cities in Inner Mongolia， and pesticide residues in vegetables were detected by gas chromatography-mass spectrometry and liquid chromatography-mass spectrometry. The test results are determined according to the Maximum Residue Limits of Pesticides in Food of National Food Safety Standard （GB 2763—2021）.ResultsA total of 1 721 vegetable samples were collected， and 20 prohibited pesticides were monitored， including carbamate， organophosphorus and organochlorine pesticides. The total detection rate of 20 prohibited pesticides was 9.24% （159/1 721）， and the total overstandard rate was 5.35% （92/1 721）. Among the 20 prohibited pesticides， the other 16 pesticides were detected except carbosulfan， methomyl， aldicarb and chlorazophos. The highest detection rate was monophosphorus， which was 4.64% （21/453）. The over-standard rate was the highest for Diguo， 2.50% （24/959）. The detection rate and overstandard rate of forbidden pesticides in leaf vegetables were 12.11% （77/636） and 8.18% （52/636）， respectively.ConclusionSeveral banned and restricted pesticides were detected in vegetables sold in Inner Mongolia. It is suggested that relevant departments strengthen the supervision of banned andrestricted pesticides to ensure the safety of the people’s tongue.