Sediments as a potential tool for assessment of sewage pollution in Barigüi River, Brazil.

Environmental Monitoring and Assessment
Sandro FroehnerRaquel Fernandes Martins

Abstract

Sediments constitute a pollutant trap and have proven to be an efficient tool to identify environmental impacts. Sediments are considered a very important means to assess the level of contamination of water bodies because of their ability to accumulate metals and organic. The anthropogenic inputs of sewage, with or without prior treatment, in aquatic environments, affect the geochemical composition of sediment. In addition, the sediment adsorbs hydrophobic compounds found in feces, such as the fecal sterols. The granulometric and geochemical composition of the sediment of Barigüi River-Brazil was investigated. The results show that silt and clay dominate the granulometric composition of the sediments. The geochemical composition of sediments showed high concentrations of phosphorus and nitrogen. The Redfield ratios confirm the inputs of phosphorus and nitrogen. The TOC/N ratio was used to identify the source of pollution. N/TP ratios were found between 1.0 and 3.5. Clearly, an input of phosphorus, sewage is the most acceptable source, following the historic profile of the Barigüi River. High concentration of nitrogen phosphorus labels the area to be polluted by sewage. To confirm the sewage pollution, adsorbed fecal sterols in ...Continue Reading

References

Apr 6, 2002·Environment International·Ian D BullRichard P Evershed
Jan 31, 2004·Environmental Science & Technology·Stuart G WakehamPeter R Leavitt
Oct 9, 2008·Environmental Monitoring and Assessment·Sandro FroehnerMarcelo Risso Errera

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Citations

Sep 8, 2015·Analytical and Bioanalytical Chemistry·Dario BattistelCarlo Barbante
Jan 1, 2012·Journal of Environmental Sciences (China)·Nur Hazirah AdnanMasni Mohd Ali
Nov 26, 2015·Environmental Science and Pollution Research International·Jiang LiuShanman Li
Jul 14, 2014·The Science of the Total Environment·Karina S MachadoPaulo A L Ferreira
Oct 13, 2018·The Science of the Total Environment·Vanda ArtifonGilberto Fillmann

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