Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/67529
Type: Artigo de periódico
Title: Occurrence and potential risk of triclosan in freshwaters of Sao Paulo, Brazil-the need for regulatory actions
Author: Montagner, CC
Jardim, WF
Von der Ohe, PC
Umbuzeiro, GA
Abstract: Triclosan (TCS) is a broad-spectrum bactericide, highly toxic to algae, which is released into the environment via wastewater effluents. Predicted no-effect concentrations (PNECs) for aquatic biota have been proposed in the literature, varying from 1.4 to 1,550 ng/L, reflecting contradicting protection goals. In this work, six rivers in the state of So Paulo were monitored for TCS and caffeine, a tracer for untreated sewage disposal, over a period of more than 1 year. From 71 samples analyzed, 32 contained TCS at concentrations above the limit of quantification, ranging from 2.2 to 66 ng/L, corresponding to a frequency of exceedance of the lowest PNEC of 86 % (six out of seven sites). No correlation between TCS and caffeine was observed, and one of the reasons for that could be the different use patterns in the local populations. Given the high values found in the investigated rivers, TCS seems to be a strong candidate in the priority list of compounds that should be regulated in Brazil to preserve the aquatic environment.
Subject: Triclosan
Caffeine
Emerging compounds
Protection of aquatic life
Surfacewaters
SPE-LC-MS/MS
Country: Alemanha
Editor: Springer Heidelberg
Rights: fechado
Identifier DOI: 10.1007/s11356-013-2063-5
Date Issue: 2014
Appears in Collections:Unicamp - Artigos e Outros Documentos

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