Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/324493
Type: Artigo
Title: Distribution And Sources Of Aliphatic And Polycyclic Aromatic Hydrocarbons In Surface Sediments Of Itajaí-açu Estuarine System In Brazil
Distribution and sources of aliphatic and polycyclic aromatic hydrocarbons in surface sediments of Itajaí-Açu estuarine system in Brazil
Author: Frena, Morgana
Bataglion, Giovana A.
Sandini, Sara S.
Kuroshima, Katia N.
Eberlin, Marcos N.
Madureira, Luiz A. S.
Abstract: The Itajaí-Açu estuarine system, located in southern Brazil, has great economic importance due to the presence of two ports (Itajaí and Navegantes). This system is affected by industrial and dredging activities, which can cause the remobilization of pollutants accumulated over time in the sediment. In this context, hydrocarbons were assessed in twelve surface sediment samples. n-Alkane and polycyclic aromatic hydrocarbons (PAH) concentrations were determined by gas chromatography and their sources assessed. Total concentrations ranged between 0.50 ± 0.04 and 69.70 ± 3.90 μg g-1 dry weight (d.w.) for n-alkanes and from 63.9 ± 12.1 to 1459.0 ± 43.5 ng g-1 d.w. for PAH. Most of the sediment samples presented carbon preference index (CPI) values close to unity, indicating that the area is submitted to petroleum-related sources, mainly close to Itajaí harbor, where an intense unresolved complex mixture (UCM) was observed. The presence at all stations of αβ-hopane biomarkers also indicated petrogenic input. Based on selected PAH ratios, the sedimentary PAH composition reflects a mixture of both petrogenic and pyrolytic sources. A comparison of the PAH concentrations found in this study with those listed in the sediment quality guidelines (SQGs) indicated that adverse biological effects on the biota are rarely expected.
The Itajaí-Açu estuarine system, located in southern Brazil, has great economic importance due to the presence of two ports (Itajaí and Navegantes). This system is affected by industrial and dredging activities, which can cause the remobilization of pollu
Subject: Aliphatic Hydrocarbon
Polycyclic Aromatic Hydrocarbon
Biomarker
Hopane
Contamination
Hidrocarbonetos
Compostos alifáticos
Hidrocarbonetos policiclicos aromaticos
Contaminação
Country: Brasil
Editor: Sociedade Brasileira de Química
Citation: Journal Of The Brazilian Chemical Society. Sociedade Brasileira De Química, v. 28, n. 4, p. 603 - 614
Rights: aberto
Identifier DOI: 10.21577/0103-5053.20160205
Address: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532017000400603
Date Issue: 2017
Appears in Collections:IQ - Artigos e Outros Documentos

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