宁波市售大米汞含量及健康风险评价

MERCURY CONCENTRATION OF RICE SOLD IN NINGBO AND HUMAN HEALTH RISK ASSESSMENT

随着我国大米产量的增加,大米食用安全问题研究显得尤为重要。本文通过在宁波地区采购市场上销售的大米,利用RA-915 M测汞仪测定大米样品中汞含量,对宁波市售大米中汞含量做出健康风险评价,为宁波市的食品风险监管提供科学依据。实验结果发现:宁波市售的大米总汞含量在3~13μg/kg之间,平均值在4.7~7.8μg/kg之间,其中80%样品的汞浓度低于8μg/kg,大米样品中汞含量低于国家规定上限值20μg/kg。人体健康风险系数范围为5.79×10^(-4)~3.43×10^(-2),属于轻度风险。宁波市售大米中汞不会对人群形成明显的威胁。

With the increase of rice production in China, the research about safe problem of rice is significantly important. Due to provide the scientific basis for Ningbo government food risk regulation and make health risk assessment for the rice sale in Ningbo, it measures the mercury content of rice sale in Ningbo by RA-915 M mercury measurement instrument. Results show that： total mercury concentration of rice sale in Ningbo ranges from 3 μg/kg to 13 μg/kg, the average value ranges from 4.7 μg/kg to 7.8 μg/kg. The mercury concentration of 80 % rice samples collected is less than 8 μg/kg. The mercury concentration of total rice collected is lower than 20 μg/kg which is the upper limit prescribed by the nation. Besides, the coefficient of human health risk ranges from 5.79×10^-4~3.43×10^-2, the rank of human health risk belongs to mild. Mercury of rice sale in Ningbo is clearly not threating to people＇s health.