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Original Articles

Health risk due to chronic heavy metal consumption via cow’s milk produced in Puebla, Mexico, in irrigated wastewater areas

ORCID Icon, ORCID Icon, , &
Pages 38-44 | Received 28 Jun 2018, Accepted 03 Sep 2018, Published online: 02 Oct 2018
 

ABSTRACT

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.

Acknowledgments

The authors thank the Benemérita Universidad Autónoma de Puebla and Colegio de Postgraduados—Campus Puebla for technical support in the realisation of this work.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by the Benemérita Universidad Autónoma de Puebla and Colegio de Postgraduados Campus Puebla.

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