Electrical conductivity and emerging contaminant as markers of surface freshwater contamination by wastewater

Autor(es)

Ribeiro de Sousa, Diana Nara ^[1] ; Mozeto, Antonio Aparecido ^[1] ; Carneiro, Renato Lajarim ^[2] ; Fadini, Pedro Sergio ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, UFSCar, Dept Quim, Lab Biogeoquim Ambiental LBGqA, Nucleo Diagnost &, BR-13565905 Sao Carlos, SP - Brazil

^[2] Univ Fed Sao Carlos, UFSCar, Dept Quim, GQA, BR-13565905 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Science of The Total Environment; v. 484, p. 19-26, JUN 15 2014.
• Citações Web of Science: 31

Resumo

The use of chemical markers of undoubted anthropogenic sources for surface freshwater contamination by wastewaters was evaluated employing correlations observed between measured physico-chemical parameters as the electrical conductivity and the concentration of different emerging organic compounds. During the period from April/2011 to April/2012 spatial-temporal variations and contamination patterns of two rivers (Pirai and Jundiai rivers), Sao Paulo state, Brazil were evaluated. Seven physico-chemical parameters and concentrations of different classes of emerging contaminants were determined in samples collected in seven field campaigns. The high linear correlation coefficients obtained for the compounds diclofenac (r = 0.9085), propanolol (r = 0.8994), ibuprofen (r = 0.8720) and atenolol (r = 0.7811) with electrical conductivity, also corroborated by principal component analysis (PCA), point to the potential use of these compounds as markers of investigated surface water contamination by wastewaters. Due to specific inputs, these environmental markers showed very good effectiveness for the identification and differentiation of water body contamination by discharges of treated and untreated urban sewage. (C) 2014 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 10/01731-0 - Ocorrência e distribuição de contaminantes emergentes na Bacia Hidrográfica do Rio Jundiaí - São Paulo
• Beneficiário: Pedro Sergio Fadini
• Modalidade de apoio: Auxílio à Pesquisa - Regular