The aim of this study was to determine the heavy metals content of milk from cows fed with forage irrigated with waste water from industrial sources and the health risk to children. Milk samples were taken from milk collection tanks of eight localities in the state of Puebla. On average, the heavy metals in the milk had the following order Zn> As> Pb > Cr> Cu > Ni. Pb (0.03 mg kg⁻¹) exceeded the Codex limits. For As the hazard index was 8.0 ± 0.4, which is far above 1. On the other hand, the individual risk of cancer showed a descending order Cr> As > Pb, while the risk of total cancer (0.004 ± 0.002) indicated that the combined effect of heavy metals created a serious risk for girls and children.

这项研究的目的是测定用工业来源的废水灌溉的饲喂草料的奶牛的牛奶中重金属含量，以及对儿童的健康风险。牛奶样品取自普埃布拉州八个地方的牛奶收集罐。平均而言，牛奶中的重金属具有以下顺序：锌>砷>铅>铬>铜>镍。铅（0.03 mg kg ^-1）超过了食典限制。对于，危险指数为8.0±0.4，远高于1。另一方面，个体癌症风险显示Cr> As> Pb降序排列，而总癌症风险（0.004±0.002）表明：重金属的综合作用给女孩和儿童带来了严重的危险。