门头沟区蔬菜中砷、汞的污染状况与健康风险评估

Arsenic and Mercury Pollution Status and Health Risk Assessment of Vegetables in Mentougou Area

目的:了解门头沟区的蔬果类食品中砷、汞的含量水平与污染状况,评估膳食暴露的健康风险。方法:采集并检测市场在售的蔬菜样品,采用污染指数法评价样品的污染状况,靶向危害系数法评估健康风险。结果:共检测蔬菜样品210件,总砷中位值为0.016 0 mg·kg^(-1),总汞中位值为0.001 6 mg·kg^(-1)。合格率为100%。污染指数法评价结果显示,209件样品Pi<0.7,在安全范围内;1件蔬菜样品总汞Pi值为0.83,在警戒线内。综合污染指数Pn均小于0.7,表明样品安全、未受到污染。靶向危害系数THQ、TTHQ均小于1,表明样品不存在明显的健康风险。结论:门头沟区在售的蔬菜不存在明显的健康风险。

Objective:To investigate the content level and pollution status of arsenic and mercury in fruits and vegetables in Mentougou district,and to evaluate the health risk of dietary exposure.Method:Samples of vegetables sold in the market were collected and tested.Pollution index method was used to evaluate the contamination status of the samples,and targeted hazard coefficient method was used to evaluate the health risk.Result:A total of 210 vegetable samples were detected,the median value of total arsenic was 0.0160 mg·kg^(-1),and the median value of total mercury was 0.0016 mg·kg^(-1).The pass rate is 100%.The evaluation results of pollution index method showed that Pi of 209 samples was less than 0.7,which was within the safe range,and the total mercury Pi of 1 vegetable sample was 0.83,which was within the warning line.The comprehensive pollution index Pn was less than 0.7,indicating that the samples were safe and uncontaminated.The targeted hazard coefficient THQ and TTHQ were both less than 1,indicating that the sample had no obvious health risk.Conclusion:The vegetables sold in Mentougou district have no obvious health risk.