Determinación de Cobre, Níquel y Cromo en muestras de orina en personas que se encuentran relacionadas en el ámbito minero y viven aledañas al sector y análisis de Mercurio, Plomo, Arsénico, Cobre, Cromo, Níquel y Cadmio en el agua del Sector de Nambija en la provincia de Zamora Chinchipe

Abstract

One of the main activities of Zamora Chinchipe’s province is mining, which in a high percentage is done in an artisanal way, therefore the is an elevated risk of contamination by heavy metals on the exposed population. In Nambija’s neighborhood, a research showed the presence of heavy metals in the urine of the population of three different zones of exposure; zone A (greater exposure), zone B (less exposure) and zone C (not exposed) and in drinking water of these areas. Three collections of the samples were made in an interval of 30 days; The analysis of the samples was carried out by atomic absorption spectrophotometry (flame, graphite furnace and hydride generator). In the area of greater exposure (zone A), urine values were higher than the reference values for Cu, Cr, and Ni compared with the obtained in the three study areas. In the water, high concentrations of Hg, Ni, As, Cr and Cd were obtained in the greater exposure areas. In the area of least exposure and in the unexposed area, high concentrations of Hg, Ni, As, Cr, and Cd were obtained.