Occurrence and potential risk of triclosan in freshwaters of Sao Paulo, Brazil-the need for regulatory actions

Autor(es)

Montagner, Cassiana C. ^[1] ; Jardim, Wilson F. ^[2] ; Von der Ohe, Peter C. ^[3] ; Umbuzeiro, Gisela A. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Fac Technol, Limeira, SP - Brazil

^[2] Univ Estadual Campinas, Inst Chem, Environm Chem Lab, Campinas, SP - Brazil

^[3] UFZ Helmholtz Ctr Environm Res, Dept Effect Directed Anal, Leipzig - Germany

• Tipo de documento: Artigo Científico
• Fonte: Environmental Science and Pollution Research; v. 21, n. 3, p. 1850-1858, FEB 2014.
• Citações Web of Science: 30

Resumo

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. (AU)

• Processo FAPESP: 08/57808-1 - Instituto Nacional de Ciências e Tecnologias Analíticas Avançadas - INCTAA
• Beneficiário: Celio Pasquini
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 12/00303-0 - Ocorrência de praguicidas prioritários em águas naturais - subisídios para a garantia dos usos múltiplos e políticas públicas
• Beneficiário: Cassiana Carolina Montagner
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado