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首页> 美国卫生研究院文献>International Journal of Environmental Research and Public Health >Metal (Pb Cu Cd and Zn) Transfer along Food Chain and Health Risk Assessment through Raw Milk Consumption from Free-Range Cows
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Metal (Pb Cu Cd and Zn) Transfer along Food Chain and Health Risk Assessment through Raw Milk Consumption from Free-Range Cows

机译：金属（PbCuCd和Zn）沿食物链的转移以及通过自由放养牛的生乳消耗进行健康风险评估

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Background: Metal transfer along the food chain has raised concerns about impacts on human health due to dietary exposure to low but chronic concentrations. Soil–forage–milk–consumer is a short food chain through which metals are able to reach an organism. Methods: Pb, Cu, Cd, and Zn were determined in water, soil, forage, and milk samples collected from free-range cattle farms situated near Baia Mare, Romania. The soil-to-forage ( ) and forage-to-milk ( ) transfer factors for metals and the health risk for three population groups (females, males, and children) through the consumption of milk containing low levels of metals were assessed. Results: indicated that the uptake capabilities of the metals from soil to forage were in the following order: Zn > Cd > Cu > Pb. indicated a lack of metal accumulation through forage ingestion. Estimated daily ( ) and provisional tolerable weekly ( ) intake values revealed a minimal exposure of the population to those metals through milk consumption. A noncarcinogenic hazard index indicated that milk consumption from local markets does not pose any risk for human health; however, the average cancer risk showed a high potential carcinogenic risk. Conclusions: The consumption of milk produced by small local farmers does not pose noncarcinogenic risks. More extended studies should be carried out in order to identify the potential carcinogenic risk caused by the low levels of metals in the milk consumed.
机译：背景：由于食物暴露于低而长期的浓度下，食物链中的金属转移引起了人们对人类健康影响的担忧。土壤-草料-牛奶-消费者是一条短的食物链，金属可以通过它到达生物体。方法：从罗马尼亚拜亚马雷附近的自由放养牛场采集的水，土壤，饲料和牛奶样品中测定铅，铜，镉和锌。评估了金属从土壤到草料（）和草料到奶（）的转移因子以及三个人群（通过摄入低含量的金属牛奶）对健康的危害性（男性，儿童和男性）。结果：表明金属从土壤到草料的吸收能力依次为：Zn> Cd> Cu> Pb。表明缺乏通过饲草摄入的金属积累。估计的每日（）和暂定可耐受的每周（）摄入量表明，通过食用牛奶，该人群对这些金属的接触最少。非致癌危险指数表明，从当地市场购买牛奶不会对人类健康构成任何风险；但是，平均癌症风险显示出很高的潜在致癌风险。结论：当地小农生产的牛奶的消费不会构成非致癌风险。为了确定由于食用的牛奶中金属含量低而引起的潜在致癌风险，应进行更广泛的研究。

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