Geoquímica das águas da bacia hidrográfica do Rio Descoberto, Brasília/DF - Brasil

• Autor(a) principal: CARMO, Marcileia Silva dos Santos
• Data de Publicação: 2005
• Outros Autores: BOAVENTURA, Geraldo Resende, OLIVEIRA, Edivan Costa
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UFPA
• Texto Completo: http://repositorio.ufpa.br/jspui/handle/2011/7122
• topic: Geoquímica; Bacias hidrográficas; Rio Descoberto (DF); Conselho Nacional do Meio Ambiente (Brasil)

The objective of this paper is to investigate the physical and chemical quality of the water of the Descoberto River during the dry and rainy seasons by measuring pH, temperature, electric conductivity, total dissolved solids, turbidity, color, alkalinity and NO3-, SO42-, PO43-, NH4+, Cl- and HCO3-, and the elements Sr, Mo, Cd, Y, Ti, Ca, V, Mg, Fe, Si, Ni, Zr, Cu, Al, Cr, Mn, Ba, Co, Zn, P, Na and K. The results showed high concentrations in both seasons, with dilution along the course of the river, minimizing for a while problems that compromise the quality of the water of this source. However, a progressive deterioration can occur due to an increase in the discharge of pollutants, resulting from population growth, agricultural activities and other factors.