两地区大米和家畜肝肾镉污染情况及其健康风险评估

Status of Cadmium Pollution to Rice and Viscera of Livestock and Assessment of Its Potential Risk to Human Health in Two Areas

在典型非镉污染区上海和镉污染区贵州毕节,随机采集大米、猪肝、猪肾和牛肾样本共236份,研究两地大米和家畜肝肾产品镉污染情况及产生的人群健康风险。结果表明：上海地区各样本镉含量超标率为6.78%~16.95%,污染区贵州毕节样本镉污染更为严重,达32.20%~40.68%。对于普通人群和高摄入人群,上海地区大米和家畜肝肾食用途径镉摄入量均达0.14~2.8μg/kg·bw/d,相应的目标风险系数已超过1,表明无污染区上海人群也可能因为食用产自其他地区的受污染食品而面临一定健康风险;贵州毕节地区对应的镉摄入量和目标风险系数明显更高,表明污染区人群面临更大健康风险。

Total 236 samples of flee, pig liver, pig kidney and cattle kidney were randomly collected from typical non-cadmi- um-polluted area Shanghai and cadmium-polluted area Bijie, and their cadmium （Cd） pollution status and generated potential risk to human health were studied. The results showed that： as for Cd content, the over-standard rate of various samples from Shanghai ranged from 6.78% to 16.95%, and that from Bijie varied from 32.20% to 40.68%. For common population and high-intake population in Shanghai, their daily intake of Cd through the consumption of rice and viscera of hvestock reached 0.14-2.80 μg/kg . bw/ d, and the corresponding target hazard quotient exceeded 1.0, which indicated that the people in non-Cd-polluted area Shanghai were probably faced with a certain health risk due to their consumption of Cd-polluted foods from other regions. For the local residents in Bijie area of Guizhou province, their daily intake of Cd and corresponding target hazard quotient were obviously higher than those in Shanghai, indicating the people in this Cd-polluted area were faced with a greater health risk.