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

2005; Brazilian Chemical Society; Volume: 28; Issue: 4 Linguagem: Inglês

10.1590/s0100-40422005000400002

1678-7064

Marciléia Silva do Carmo, Géraldo Resende Boaventura, Edivan Costa Oliveira,

Water Quality and Pollution Assessment

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 NO 3 -, SO 4 2-, PO 4 3-, NH 4 + , Cl -and HCO 3 -, 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.