【摘要】 目的了解上海市居民膳食中铅、镉暴露的基础数据,评估上海市市售食品中铅、镉污染的危险性。方法对上海市市售食品中铅、镉含量进行监测,并结合上海市居民膳食营养素摄入量调查,应用WHO推荐的食品中化学污染物膳食暴露评估方法,对上海市居民膳食中铅、镉暴露水平进行评估。结果上海市居民平均每周膳食中铅、镉暴露量分别为0.006 2、0.002 5 mg/kg BW,占暂定每周可耐受摄入量(PTWI)的24.77%、35.06%。高端消费人群(食物消费量第90百分位数)每周膳食中铅、镉暴露量分别为0.012 3和0.0048 mg/kg BW,占PTWI的49.08%、68.09%。结论上海市居民膳食中镉暴露水平高于铅暴露水平,正常情况下均低于PTWI,但仍有进一步降低的必要。更多还原

【Abstract】 Objective To obtain the basic data of lead and cadmium exposure from food for Shanghai residents,and to estimate the health risk of dietary lead and cadmium contamination in Shanghai.MethodsA method recommended by WHO on the dietary exposure assessment of chemicals in food was applied.Surveillance on the content of lead and cadmium in food combined with a survey on dietary nutrients intake of Shanghai residents was conducted.ResultsThe average dietary lead and cadmium exposure of Shanghai residents per week were estimated to be 0.006 2 mg/kg BW and 0.002 5 mg/kg BW,accounted for 24.77% and 35.06% of provisional tolerable weekly intake(PTWI),respectively.The dietary lead and cadmium exposure per week of top consumers(the food consumption was higher than the upper 90th percentile) were estimated to be 0.012 3 and 0.004 8 mg/kg BW,accounted for 49.08% and 68.09% of PTWI.Conclusion The level of dietary cadmium exposure in Shanghai residents was higher than that of dietary lead exposure.Although both dietary lead and cadmium exposure level in Shanghai residents is usually lower than PTWI,cutting it down is necessary.更多还原