Melo, Camila de Almeida [UNESP]Moreira, Altair Benedito [UNESP]Bisinoti, Márcia Cristina [UNESP]2014-05-202014-05-202009-01-01Química Nova. Sociedade Brasileira de Química, v. 32, n. 6, p. 1436-1441, 2009.0100-4042http://hdl.handle.net/11449/22284In this manuscript, seasonal and spatial trends of water collected from two sampling places in the Preto River in the Turvo-Grande watershed were evaluated. Water samples were collected during June/07 to July/08 and parameters sulphate, total organic carbon, ammonia, conductivity, dissolved oxygen, temperature, dissolved total solids and nitrate were quantified. Seasonal trend indicated sanitary effluents as a point source of contamination in both sampling points. Vertical trends demonstrated that the Municipal Dam was not stratified and received a diffuse source of pollutants from flooding and agriculture runoffs. It was also verified that there is relatively fast ammonia consumption kinetics having a half-life time of 1.43 h which can explain the low ammonia concentrations found in these aquatic bodies.1436-1441porPreto riverseasonal and spatial trendspollutantsArtigo10.1590/S0100-40422009000600014S0100-40422009000600014WOS:000270128800014Acesso abertoS0100-40422009000600014.pdf532377100138018932644800445293800000-0002-4631-2400