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metadata.dc.type: | Artigo de Periódico |
Title: | Persistent toxic substances in surface water of Todos Os Santos Bay, Brazil |
Other Titles: | Resources and Environment |
Authors: | Celino, Joil José Corseuil, Henry Xavier Fernandes, M. Hadlich, Gisele Mara |
metadata.dc.creator: | Celino, Joil José Corseuil, Henry Xavier Fernandes, M. Hadlich, Gisele Mara |
Abstract: | Persistent toxic substances (PTSs) such as polycyclic aromatic hydrocarbons (PAHs) are of great concern due to their persistence, bioaccumulation and toxic effects. In this work, 14 PAHs included in the US Environmental Protection Agency’s (EPA) priority pollutant list were analysed using gas chromatography–mass spectrometry (GC–MS). Surface water sampling was undertaken in Todos os Santos Bay, northern Brazil. Total PAH concentrations varied from 0.0029 to 0.1079 ng/L in surface waters (main rivers, tributaries, etc.) with mean value of 0.0344 ng/L. Such concentrations can be taken as background values for the studied region and show that PAHs are within or lower than levels reported in certain other areas. The PAH profiles were dominated by high molecular weight PAHs (four- and five-ring components) in surface water sam-ples. It indicated that PAHs in surface water have its origin from oil or sewage contamination (petrogenic input). The col-lected data, based on indices among phenanthrene versus anthracene, showed that petrogenic input was predominant at almost all the stations investigated. Principal component analysis (PCA), using a correlation matrix, revealed the latent re-lationships among all the surface water stations investigated and confirmed our analytical results. |
Keywords: | Polycyclic Aromatic Hydrocarbons (PAHs) Surface Water Estuary Gas Chromatography–Mass Spec-trometry (GC–MS) Principal Component Analysis (PCA) |
URI: | http://www.repositorio.ufba.br/ri/handle/ri/7223 |
Issue Date: | 2012 |
Appears in Collections: | Artigo Publicado em Periódico (POSPETRO) |
Files in This Item:
File | Description | Size | Format | |
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Persistent toxic substances in surface water of Todos Os Santos Bay, Brazil.pdf | artigo Celino | 635,63 kB | Adobe PDF | View/Open |
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