Resumen

MARTINEZ ALVA, Germán et al. Total and geoavailable concentration of potentially toxic elements in the sediments from Españita river, San Luis Potosí, Mexico. Foundations for the right to a healthy environment. Rev. Int. Contam. Ambient [online]. 2025, vol.41, 55399.  Epub 01-Oct-2025. ISSN 0188-4999.  https://doi.org/10.20937/rica.55399.

The industrial activity that has predominated in San Luis Potosí has negatively impacted the health of the water bodies surrounding the industrial zone, such as the Españita River. The ecological condition of rivers is related to water quality, habitat, diversity, and abundance of aquatic organisms, as well as ecological processes and hydrology, but also to the health of the people who live nearby. The objective of this research was to determine the physical and chemical parameters (temperature, pH, total organic carbon, total dissolved solids, electrical conductivity, oxidation reduction potential) and the total and geoavailable concentration of potentially toxic elements (heavy metals and metalloids) in sediment samples from the Españita River in San Luis Potosí. Mexico, with the purpose of verifying compliance with the right to a healthy environment. The samples were collected and analyzed by inductively coupled plasma atomic emission spectroscopy (ICP-OES). The results reveal that the lower sectors of the Españita River are severely contaminated with potentially toxic elements in accordance with the limits established by official Mexican and international standards, especially geoavailable Pb (0.69-0.97 mg/L), Cd (0.08-0.09 mg/L), and As (0.01-0.04 mg/L), which represents an imminent risk to the health of the ecosystem and the people living in the areas surrounding the river.

Palabras llave : metals; pollution; health.

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