title: Mass balance in the monitoring of pollutants in tidal rivers of the Guanabara Bay, Rio de Janeiro, Brazil.
abstract: This study addressed the identification and monitoring of pollution sources of terrestrial origin in rivers (domestic sewage and industrial effluents) and critical fluvial segments in highly polluted environments under tidal influence (mixing marine and continental sources) from Guanabara Bay Basin, Rio de Janeiro, Brazil. The mass balance of contaminants was determined in conditions of continuous flow (low tide) during dry season (lower dilution capability). The results allowed the evaluation of the potential of contaminant mass generation by the different river segments and the estimation of their natural and anthropogenic components. The water quality of Iguaçú and Sarapuí Rivers were evaluated for metals and biochemical oxygen demand. The method gave an excellent response, including the possibility of sources identification and contaminated river segments ranking. The approach also offers fast execution and data interpretation, being highly efficient.
authors.affiliation: Geochemistry Department, UFF, Outeiro de São João Batista s/n, Centro, Niterói, RJ, CEP 24.020-141, Brazil.
authors.forename: Raquel Pinhão
authors.initials: RP
authors.lastname: da Silveira
authors.forename: Ana Paula de Castro
authors.initials: AP
authors.lastname: Rodrigues
authors.forename: Ricardo Erthal
authors.initials: RE
authors.lastname: Santelli
authors.forename: Renato Campello
authors.initials: RC
authors.lastname: Cordeiro
authors.forename: Edison Dausacker
authors.initials: ED
authors.lastname: Bidone
mesh_terms: D061006:Bays / Q000737:chemistry; D001938:Brazil; D004784:Environmental Monitoring / Q000379:methods*; D008670:Metals / Q000032:analysis; D045483:Rivers / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014877:Water Pollution, Chemical / Q000706:statistics & numerical data
chemical_list: D008670:Metals; D014874:Water Pollutants, Chemical