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    蔡嘉旖, 尚琪, 张文丽. 贵州某环境污染区人群镉暴露水平分析[J]. 环境卫生学杂志, 2022, 12(1): 36-42. DOI: 10.13421/j.cnki.hjwsxzz.2022.01.007
    引用本文: 蔡嘉旖, 尚琪, 张文丽. 贵州某环境污染区人群镉暴露水平分析[J]. 环境卫生学杂志, 2022, 12(1): 36-42. DOI: 10.13421/j.cnki.hjwsxzz.2022.01.007
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    CAI Jia-yi, SHANG Qi, ZHANG Wen-li. Cadmium exposure of residents in a polluted area in Guizhou Province, China[J]. Journal of Environmental Hygiene, 2022, 12(1): 36-42. DOI: 10.13421/j.cnki.hjwsxzz.2022.01.007
    Citation: CAI Jia-yi, SHANG Qi, ZHANG Wen-li. Cadmium exposure of residents in a polluted area in Guizhou Province, China[J]. Journal of Environmental Hygiene, 2022, 12(1): 36-42. DOI: 10.13421/j.cnki.hjwsxzz.2022.01.007
    shu

    贵州某环境污染区人群镉暴露水平分析

    Cadmium exposure of residents in a polluted area in Guizhou Province, China

      摘要
    • 摘要:
      目的 了解贵州某镉污染区农作物污染状况及人群镉暴露水平。
      方法 通过随机抽样方法获得调查人群(1 349人)，采用三日询问法获得人群膳食消费量，原子吸收法测定膳食镉含量，电感耦合等离子质谱检测尿镉用于内暴露评估。
      结果 采集粮食样品957份。完成186人的膳食调查和1 349人尿样筛查。污染区玉米、土豆及青菜的镉含量超过食物中镉限量值，青菜镉含量(均值0.2 mg/kg)高于其他食物，青菜镉的贡献达50.8%。污染区90%以上人群膳食镉暴露超标，90%以上人群尿镉超过2 μg/g·Cr，70%以上人群尿镉超过5 μg/g·Cr，10%左右人群尿镉超过15 μg/g·Cr。
      结论 膳食中镉主要来源为青菜，防止通过农作物—人食物链的人体镉暴露，建议定期开展健康筛查。

       

      Abstract:
      Objective To investigate the cadmium (Cd) concentration in crops and the Cd exposure level of population in a cadmium-polluted area in Guizhou Province, China.
      Methods The subjects(1 349 residents) were selected by random sampling from the local residents. A three-day survey was conducted to obtain dietary consumption. Dietary Cd content was measured by AAS, and ICP/MS was used to determine Cd in urine for estimation of internal exposure.
      Results A total of 957 crop samples were collected, dietary survey was carried out for 186 residents, and testing of urine samples was conducted in 1 349 residents. The Cd content in corn, potato and rape exceeded the maximum permissible limits of food. The content of Cd in rape (mean 0.2 mg/kg) was higher than that in other foods and accounted for 50.8% of dietary Cd exposure. More than 90% of the population in the polluted area had dietary Cd exposure above the permissible limit, with a urinary Cd level of >2 μg/g in more than 90% of the population, >5 μg/g in more than 70% of the population, and >15 μg/g in around 10% of the population.
      Conclusion The main dietary source of Cd is from rape and regular health screening is recommended to prevent Cd exposure from the food chain.

       

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