| Autor: |
Mauricius Marques dos Santos, Franciane de Almeida Brehm, Tais Cristina Filippe, Gabriela Reichert, Júlio César Rodrigues de Azevedo |
| Jazyk: |
English<br />Portuguese |
| Předmět: |
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| Zdroj: |
Revista Brasileira de Recursos Hídricos, Vol 22 |
| Druh dokumentu: |
article |
| ISSN: |
2318-0331 |
| DOI: |
10.1590/2318-0331.011716084 |
| Popis: |
ABSTRACT Polycyclic aromatic hydrocarbons (PAHs) are considered persistent organic pollutants and can cause serious damage in some organisms, including mutagenic and carcinogenic properties. The aim of this study was to evaluate the PAH concentrations in an urban basin and use diagnostic ratios to possible distinguish sources of contamination. The surface water analysis showed predominance of compounds containing 3 to 4 aromatic rings while in suspended particulate matter and sediment there was a predominance of compounds containing 4, 5 and 6 rings. Although present in low concentrations in the sediment, assessment of toxicity equivalent factor (TEF) showed values higher than 3 ng g–1 pellet to 50% of the samples with values of up to 125.35 ng g-1. The use of diagnostic ratios allowed verifying that the main source of PAHs in these aquatic environments, are pyrogenic sources. Still, the use of such relations should be done with caution, trying to assess possible interference of degradation factors |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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