福建省宁化县稻米镉含量调查及健康风险评估

    Cadmium Content Investigation and Health Risk Assessment of Rice in Ninghua County of Fujian

    • 摘要: 2018年在福建省三明市宁化县所辖16个乡镇共采集水稻样品120份,对稻米样品中的镉污染状况进行调查;结合我国居民大米消费量数据,采用基于Monte-Carlo模拟的概率模型法,对宁化县范围内水稻中镉的膳食暴露风险进行评估。结果表明:宁化县水稻镉含量均值为0.068 5 mg·kg-1,稻米样品总体镉污染程度很轻;参考美国环境保护署的化学污染物健康风险评估模型进行评估,结果表明不同消费人群对稻谷Cd的暴露水平总体呈现低龄高于高龄的特点,稻谷Cd暴露水平相对较高的是11岁以下人群(2~11岁);消费人群食用宁化县种植水稻引起的镉暴露水平较低,风险较小。

       

      Abstract: In 2018, 120 rice samples were collected from 16 townships under the jurisdiction of Ninghua County in Sanming City of Fujian Province, in order to to investigate the cadmium pollution in the rice samples. Based on the data of rice consumption in China, the probability model based on Monte Carlo simulation was used to evaluate the dietary exposure risk of cadmium in rice in Ninghua County. The results showed that the average cadmium content of rice in Ninghua County was 0.068 5 mg·kg-1, and the cadmium pollution degree of the rice samples was very light. Based on the health risk assessment model of chemical pollutants from the United States Environmental Protection Agency, the assessment was carried out, and the results showed that the exposure level of cadmium in rice of different consumer groups was generally characterized by the fact that the younger age group was higher than the older age group, and the relatively high exposure level of cadmium in rice existed in the group under the age of 11(2-11 years old). The level of cadmium exposure caused by the rice grown in Ninghua County was low and the risk was small.

       

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