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Title: Geoquímica das águas da bacia hidrográfica do Rio Descoberto, Brasília/DF - Brasil
Geochemistry of the waters of the Descoberto River hydrographic basin, Brasília/DF - Brazil
Authors: Carmo, Marciléia Silva do
Boaventura, Geraldo Resende
Oliveira, Edivan Costa
Assunto:: Descoberto River
Distrito Federal
geochemistry of waters
Issue Date: 2005
Publisher: Sociedade Brasileira de Química
Citation: Quím. Nova,v.28,n.4,p.565-574,2005
Abstract: 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-, SO4(2-), PO4(3-), 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.
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