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Open AccessArticle

Assessing Surface Sediment Contamination by PBDE in a Recharge Point of Guarani Aquifer in Ribeirão Preto, Brazil

Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Departamento de Química, Universidade de São Paulo, Av. Bandeirantes, 3900, Ribeirão Preto, SP 14040-901, Brazil
Instituto Federal de Educação, Ciência e Tecnologia de Rondônia – Campus Porto Velho, Porto Velho, RO 76821-001, Brazil
Instituto de Química, Universidade de Brasília, Brasília, DF 70910-000, Brazil
National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM), Unesp, Institute of Chemistry, P.O. Box 355, Araraquara, SP 14800-900, Brazil
Author to whom correspondence should be addressed.
Water 2019, 11(8), 1601;
Received: 25 June 2019 / Revised: 25 July 2019 / Accepted: 25 July 2019 / Published: 2 August 2019
(This article belongs to the Special Issue Removal of Organic Pollution in Water Environment)
Polybrominated diphenyl ethers (PBDEs) are used as flame retardants in several products, although they can act as neurotoxic, hepatotoxic and endocrine disruptors in organisms. In Brazil, their levels in aquatic sediments are poorly known; thus, concerns about the degree of exposure of the Brazilian population to PBDEs have grown. This study aimed to quantify the presence of PBDEs in sediment samples from an important groundwater water supply in Ribeirao Preto, Brazil, and to contribute to studies related to the presence of PBDEs in Brazilian environments. Gas chromatography coupled with Electron Capture Detection (GC-ECD) was used for quantification after submitting the samples to ultrasound-assisted extraction and clean-up steps. Results showed the presence of six PBDE, BDE-47 being the most prevalent in the samples, indicating a major contamination of the penta-PBDE commercial mixture. The concentration of ΣPBDEs (including BDE-28, -47, -66, -85, -99, -100, -138, -153, -154 and -209) varied between nd (not detected) to 5.4 ± 0.2 ng g−1. Although preliminary, our data show the anthropic contamination of a direct recharge area of the Aquifer Guarani by persistent and banned substances. View Full-Text
Keywords: PBDE; sediment; Guarani aquifer; persistent organic pollutants; flame retardants PBDE; sediment; Guarani aquifer; persistent organic pollutants; flame retardants
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Ferrari, R.S.; de Souza, A.O.; Annunciação, D.L.R.; Sodré, F.F.; Dorta, D.J. Assessing Surface Sediment Contamination by PBDE in a Recharge Point of Guarani Aquifer in Ribeirão Preto, Brazil. Water 2019, 11, 1601.

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