Determination of the concentration of heavy metals in water and soil of the Angostillo-Xocotitla transect in Paso de Ovejas, Veracruz.

Abstract

In Mexico, one of the main problems in agriculture is soil contamination and the use of untreated water, both of which increase the soil´s heavy metal content. Some metals are highly toxic to plants, animals, and humans. The objective of this study is to determine the concentrations of heavy metals in water and soil along the Angostillo-Xocotitla transect in Paso de Ovejas, Veracruz. Water and soil samples were collected from the study area and analyzed to determine heavy metal concentrations. According to the results, heavy metals (Pb, Ni, Cu, Zn) are present in the soil; however, their concentrations are within the maximum permissible limits established by the standard, except for iron. The degree of contamination of these metals must be taken into account due to their possible negative effects on health, so it is recommended that this activity be carried out periodically.