BALANÇO ANIÔNICO NOS RECURSOS HÍDRICOS DA RESERVA DE MAMIRAUÁ-AM-BRASIL

Abstract

This study aimed to evaluate and quantify the
distribution of anions dissolved in the waters of the
Mamirauá Development Sustainable Reserve (RSDM),
located near the Tefé-AM, that place preserved. The
employed methodology was using colorimetric analyzers
and reagents Mark Hanna standards for calibration of
equipment. Samples were collected in the surface layers,
intermediate and bottom in periods of low rainfall. We
studied the anions: fluoride (0.0-0.25 mg/L), total chlorine
(0,0-0,24 mg/L), chlorine (0,0-0,21 mg/L), nitrate (0.0-67.78 mg/L), sulfate (0.0-24.00 mg/L), phosphate (0.023-1.02 mg/L) and cyanide (0.0-0.019 mg/L). Some parameters such as total chlorine, nitrate and cyanide were, in some points above the recommended resolution CONAMA 357/05. The sequence found for the anion balance was: sulfate> nitrate> phosphate> free chlorine> chlorine total> fluoride> cyanide. The presence of high concentrations of nitrate and phosphate may indicate eutrophication of water bodies assessed.

Index Terms - Water, anions dissolved, Amazon, balance.