杭州市下城区成人膳食铅暴露风险评估

Risk assessment of dietary lead exposure among adults in Xiacheng District of Hangzhou City

【目的】了解杭州市下城区成人膳食铅的暴露风险。【方法】2013—2018年,在杭州市下城区随机采集市售食品进行铅含量检测,并结合膳食消费量调查,采用暴露边界比(MOE)方法对成人膳食铅的暴露风险进行评估。【结果】共采集市售食品14类827件,铅含量中位数为0.0025~0.1000 mg/kg,检出率为53.20%(440/827),超标率为1.09%(9/827)。成人每日膳食铅暴露量中位数为0.1742μg/kg体重,MOE为7.46。铅贡献率蔬菜和水果最高,分别为39.18%和12.18%。【结论】杭州市下城区成人膳食铅的暴露整体处于可接受水平。蔬菜和水果膳食铅的贡献率较高,需引起重视。

[Objective]To understand the risk of dietary lead exposure among adults in Xiacheng District of Hangzhou City.[Methods]During 2013-2018,commercial foods were randomly collected in Xiacheng District of Hangzhou City for lead content testing.In combination with lead test result and dietary consumption data,the margin of exposure(MOE)method was used to assess the exposure risk of dietary lead.[Results]A total of 827 samples from 14 kinds of commercial foods were collected,and the median of lead content was between 0.0025 mg/kg and 0.1000 mg/kg.The detection rate was 53.20%,and the over-standard rate was 1.09%.The median of daily dietary lead exposure among adults was 0.1742μg/kg BW,and the MOE value was 7.46.Vegetables and fruits were the dominant contributor to dietary intake of lead,accounting for 39.18% and 12.18%,respectively.[Conclusion]The exposure of dietary lead among adults in Xiacheng District of Hangzhou City is at an acceptable level.The contribution of vegetables and fruits to dietary lead is higher than other foods,and needs more attention.