市售韭菜中农药残留及重金属污染状况

Analysis of pesticide residues and heavy metal pollution in leek

目的:科学管理湖南省韭菜食品安全。方法:对湖南地区690份韭菜样本中24项农药和5项重金属进行检测。结果:①农药残留检出率为23.19%,检出率排名前3的农药分别为多菌灵、腐霉利和氯氰菊酯;农药残留的超标率为5.80%,其中腐霉利超标率最高,达2.61%。②重金属元素检出率为77.68%,超标率为3.62%,其中检出率和超标率最高的重金属元素均为镉。结论:韭菜农药残留量较高,且重金属元素检出率远高于其农药残留检出率,其中,农药腐霉利和重金属镉为韭菜的主要超标项目,建议加强韭菜中农药残留及重金属污染的持续监测。

Objective:This study aimed to help with the scientific management of leek food safety in Hunan Province.Methods:24 kinds of pesticides and 5 kinds of heavy metals in 690 leek samples from Hunan Province were detected.Results:①Pesticide residues were detected in 23.19%of the 690 samples,and the top three pesticides were determined to be carbendazim,procymidone and cypermethrin.The exceeding rate of pesticide residues was 5.80%,and the highest exceeding rate was 2.61%of procymidone.②The detection rate of heavy metal elements was 77.68%,and the exceeding rate was 3.62%.The highest detection rate and exceeding rate of heavy metal elements was Cd.Conclusion:High pesticide residues in leek were confirmed,and the detection rate of heavy metal elements in leeks is much higher than that of pesticide residues.Among them,pesticide procymidone and heavy metal Cd are the main over-standard items of leeks.It is suggested to strengthen the continuous monitoring of pesticide residues and heavy metal pollution in leeks.