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Potentially toxic metals and metalloids in surface water intended for human consumption and other uses in the Mantaro River watershed, Peru

Author

Listed:
  • María Custodio

    (Facultad de Medicina Humana, Universidad Nacional del Centro del Perú, Huancayo, Perú)

  • Daniel Álvarez

    (Instituto Geof ísico del Perú, Lima, Perú)

  • Walter Cuadrado

    (Facultad de Ciencias Aplicadas, Universidad Nacional del Centro del Perú, Tarma, Perú)

  • Raúl Montalvo

    (Facultad de Medicina Humana, Universidad Nacional del Centro del Perú, Huancayo, Perú)

  • Salomé Ochoa

    (Facultad de Medicina Humana, Universidad Nacional del Centro del Perú, Huancayo, Perú)

Abstract

The concentration of Cu, Fe, Pb, Zn and As in the surface water intended for human consumption and other uses in the Mantaro River basin were analysed using multivariate methods. The water samples were collected from seven water bodies in the Junín region in June 2019, in the low discharge period. In each body of water, a sector with six sampling sites was established. The Cu, Fe, Pb, Zn and As contents were determined by the flame atomic absorption spectrophotometry method. The correlation analysis revealed positive and significant correlations (P < 0.05) for the Zn/Pb, Pb/Fe and Zn/Fe pairs with a good association, higher than 0.80 and for the Pb/Cu, Fe/Cu, As/Pb and As/Zn pairs a weak degree of association (P < 0.05). The analysis of the main components showed three components with their own values > 1. The hierarchical grouping analysis classified the evaluated water bodies into three groups according to the concentration of the Cu, Fe, Pb, Zn and As. The high concentrations of heavy metals and arsenic recorded in the CIMIRM and MERIS irrigation channels reveal that the Mantaro River continues to be a sink for mine wastewater discharges and runoff from mining liabilities at the headwaters of the Mantaro basin. It is, therefore, necessary to implement urgent management policies to control and reduce the levels of contamination by potentially toxic metals and metalloids in the Mantaro River.

Suggested Citation

  • María Custodio & Daniel Álvarez & Walter Cuadrado & Raúl Montalvo & Salomé Ochoa, 2020. "Potentially toxic metals and metalloids in surface water intended for human consumption and other uses in the Mantaro River watershed, Peru," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 15(4), pages 237-245.
    • Handle: RePEc:caa:jnlswr:v:15:y:2020:i:4:id:152-2019-swr
    DOI: 10.17221/152/2019-SWR
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    References listed on IDEAS

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    1. Lenka Demková & Tomáš Jezný & Lenka Bobuľská, 2017. "Assessment of soil heavy metal pollution in a former mining area - before and after the end of mining activities," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 12(4), pages 229-236.
    2. Christopher O. AKINBILE & Andrew E. ERAZUA & Toju E. BABALOLA & Fidelis O. AJIBADE, 2016. "Environmental implications of animal wastes pollution on agricultural soil and water quality," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 11(3), pages 172-180.
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