Abstract
Water samples were collected from 7 locations along major rivers of Piracicaba River basin for 22 months. The 4 upstream points represent non-polluted sites and the 3 downriver points represent polluted sites. Due to sewage input, concentrations of dissolved organic carbon (DOC), dissolved inorganic carbon (DIC), major conservative cations and anions increased significantly in the polluted sites. The major increases were observed for sodium, chloride and sulfate. Nitrate was an exception for this pattern, with similar concentrations between polluted and non-polluted sites. The probable cause was reduction of nitrate to ammonium in the polluted sites, where anoxic conditions prevail. Most of the variables had an inverse correlation with water discharge, especially in the polluted points. The sewage load was diluted by precipitation and surface waters.
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Billen, G., Somville, M., DeBecker, E. and Servais, P.: 1985, Neth. K. Sea Res. 19, 223.
Bluth, G. J. S. and Kump, L. R.: 1994, Geoch. Cosmoch. Acta 58, 2341.
Cameron, E. M.: 1996, J. Hydrol. 182, 209.
Chesterikoff, A., Garban, B., Bileen, G. and Poulin, M.: 1992, Global Biogeochem. Cycles 17, 147.
Cole, J. J., Peierls, B. L., Caraco, N. F. and Pace, M. L.: 1993, 'Nitrogen Loading of Rivers as a Human-Driven Process', in M. J. MacDonnell and S. T. A. Pickett (eds.), Human as Components of Ecosystems: The Ecology of Subtle Human Effects and Populated Areas, Springer-Verlag, New York, pp. 141–157.
Devol, A. H., Forsberg, B. R., Richey, J. A. and Pimentel, T.: 1995, Global Biogeoch. Cycles 9, 307.
Edmond, J. M.: 1970, Deep-Sea Res. 17, 735.
Howarth, R. W., Billen, G., Swaney, D., Townsend, A., Jaworski, N., Lajtha, K., Downing, J. A., Elmgren, R., Caraco, N., Jordan, T., Berendse, F., Freney, J., Kudeyarov, V., Murdoch, P. and Zhao-Liang, A.: 1996, Biogeochemistry 35, 75.
Keeney, D. R. and DeLucca, T. H.: 1993, Journal of Environmental Quality 22, 267.
Keeney, D. R. and DeLicca, T. H.: 1993, Journal of Environmental Quality 22, 267.
Keith, N. and Hemond, H. F.: 1988, Limnol. Oceanogr. 33, 174.
Krusche, A. V., Carvalho, F. P., Moraes, J. M. Camargo, P. B., Ballester, M. R. V., Hornink, S., Martinelli, L. A. and Victoria. R. L.: 1997, J. Amer. Wat. Res. Assoc. 33, 1117.
Meybeck, M.: 1982, Am. J. Sci. 282, 401.
Murdoch, P. S. and Stoddard, J. L.: 1992, Water Resources Research 28, 2707.
Peierls, B., Caraco, N., Pace, M. and Cole, J.: 1991, Nature 350, 386.
Pekárova, P and Pekár, J.: 1996, J. Hydrol. 180, 22.
Petter, N. E.: 1984, USGS Water-Supply Paper 2228.
Rabalais, N. N., Turner, R. E., Justic, D., Dortch, Q., Wiseman, W. J. and Sen Gupta, K. J.: (in press), Continental Shelf and Estuaries.
São Paulo: 1991, 'Conselho Estadual de Recursos Hídricos. Plano Estadual de Resursos Hídricos: Primeiro Plano do Estado de São Paulo', DAEE, p. 77.
São Paulo: 1994, 'Estabelecimento de metas ambientais e reenquadramento dos corpos d'água: Bacia do Rio Piracicaba', Secretaria do Meio Ambiente, p. 81.
São Paulo: 1995 'Secretaria de Economia e Planejamento. Perfil Municipal – 1995', SEADE.
Schlesinger, W. H.: 1991, Biogeochemistry, Academic Press, San Diego, 433 pp.
Stumm, W. and Morgan, J. J.: 1996, Aquatic Chemistry. Chemical Equilibria and Rates in Natural Waters, 3nd, John Wiley and Sons, New York, 1021 pp.
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Martinelli, L.A., Krusche, A.V., Vicgoria, R.L. et al. Effects of Sewage on the Chemical Composition of Piracicaba River, Brazil. Water, Air, & Soil Pollution 110, 67–79 (1999). https://doi.org/10.1023/A:1005052213652
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DOI: https://doi.org/10.1023/A:1005052213652