Bioavailability of Heavy Metals in the Sediment of the High Andean Wetland Collotacocha - Recuay – Ancash

Leyva Collas M.V.; Otoya Zelada A.M. · Revista de Metalurgia (2025) · DOI: 10.3989/revmetalm.e286.1739

Resumen

The objective of this study is to analyze the relationship between the concentrations of humic and fulvic acids and the bioavailability of heavy metals in the sediment of the Altoandino Collotacocha wetland. The analysis involved measuring the concentration of organic acids in the wetland and determining the metals in the sediment using Teyssier’s sequential extraction speciation and the UV spectroscopy method. The sediment results during the rainy season detected iron at high concentrations (5490.96 to 6533.83 mg·kg-1), aluminum at concentrations of (497.08 to 655.94 mg·kg-1), lead between 315.21 and 471.99 mg·kg-1, and arsenic between 55.85 and 91.26 mg·kg-1. The conclusions indicate that during the rainy season, the percentage composition of the wetland sediment at the eight stations showed that the percentage of humic acids is higher than that of fulvic acids. In the evaluations carried out on the speciation of metals in the sediment, it is therefore concluded that the bioavailability of heavy metals in the wetland is lower when the percentage of humic acids in the sediment is higher than that found in fulvic acid.

Instituciones: Universidad Nacional de Trujillo