INCIDENCE OF HEAVY METALS IN WATER, SOIL, ALFALFA (MEDICAGO SATIVA L.) AND SHEEP (OVIS ARIES L.) ALONG THE QUILCA - VITOR - CHILI BASIN IN AREQUIPA, PERU

Omar Bellido Valencia, Juan Jose Alca, María De Los Ángeles Núñez Alberca

Research output: Contribution to journalArticlepeer-review

Abstract

The concentration of heavy metals (Cd, Cu, Cr, Fe, Hg, Pb, Zn) and arsenic was determined in water, soil and alfalfa samples in three sites (Congata, Uchumayo and Vitor) located along the Quilca - Vitor - Chili River, near the city of Arequipa, Peru. The content of these elements was also analysed in samples of alfalfa at different times of being planted (1 to 3 months) in Congata. Alfalfa planted in three other locations (Quiscos, Yarabamba and La Joya) upstream and downstream of the first three was also analysed. To determine the concentration of heavy metals in sheep, measurements were made on liver and kidney samples from animals farmed in the first three sites. The concentration of metals and arsenic in the water samples was lower than the Peruvian environmental quality standards, except for Hg in Vitor (0.0001 mg L-1). The Cd content in the soil at all three sites (62.01 - 381.94 mg kg-1) was well above the EQS for agricultural, commercial or industrial soils. The Cd content in the alfalfa samples grown in the same soils was higher than that observed in the samples from Quiscos, Yarabamba and La Joya. The estimated daily intake values (EDI) for metals detected in sheep kidneys and liver (Fe, Cu, Zn) were below the provisional maximum tolerable daily intakes (PMTDI) for children and adults, while the target hazard quotient (THQ) and total THQ of these elements were less than 1, indicating that their consumption would not have an adverse health effect.

Original languageEnglish
Pages (from-to)21-34
Number of pages14
JournalCarpathian Journal of Earth and Environmental Sciences
Volume17
Issue number1
DOIs
StatePublished - 2022

Bibliographical note

Funding Information:
This work was supported by the Universidad Nacional de San Agust?n de Arequipa [grant IBA-0028-2016-UNSA]. The authors would also like to thank Mr. C?sar Augusto Quispe ?lvarez for his support in the preparation of the geological map.

Funding Information:
This work was supported by the Universidad Nacional de San Agustín de Arequipa [grant IBA-0028-2016-UNSA]. The authors would also like to thank Mr. César Augusto Quispe Álvarez for his support in the preparation of the geological map.

Publisher Copyright:
© 2022, Carpathian Journal of Earth and Environmental Sciences. All Rights Reserved.

Keywords

  • Alfalfa
  • Copper
  • Heavy metals
  • Meat
  • Mining

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