Polycyclic Aromatic Hydrocarbons in Superficial Sediments of the Negro River in the Amazon Region of Brazil

Polycyclic Aromatic Hydrocarbons in Superficial Sediments of the Negro River in the Amazon Region of Brazil

Polycyclic aromatic hydrocarbons (PAHs) were identified and quantified in samples of superficial sediments of the Negro River, in the Amazon region of Brazil, through analyses performed by GC/MS. Total PAH concentration that includes parent and alkylated PAHs ranged from 6.5 to 5348 ng g -1 of dry w...

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Veröffentlicht in:Journal of the Brazilian Chemical Society 2015-07, Vol.26 (7), p.1438-1449
Hauptverfasser: Souza, Hilton M. L., Taniguchi, Satie, Bícego, Márcia C., Oliveira, Luiz A., Oliveira, Tereza C. S., Barroso, Hiléia S., Zanotto, Sandra P.
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container_end_page 1449
container_issue 7
container_start_page 1438
container_title Journal of the Brazilian Chemical Society
container_volume 26
creator Souza, Hilton M. L.
Taniguchi, Satie
Bícego, Márcia C.
Oliveira, Luiz A.
Oliveira, Tereza C. S.
Barroso, Hiléia S.
Zanotto, Sandra P.
description Polycyclic aromatic hydrocarbons (PAHs) were identified and quantified in samples of superficial sediments of the Negro River, in the Amazon region of Brazil, through analyses performed by GC/MS. Total PAH concentration that includes parent and alkylated PAHs ranged from 6.5 to 5348 ng g -1 of dry weight. The ∑16 PAHs prioritized in environmental studies by the U.S. Environmental Protection Agency (USEPA) ranged from 5.6 to 1187 ng g -1 . The most contaminated places were those where muddy sediments were found, with the highest concentrations of organic matter, carbon and total nitrogen. The priority PAHs with high molecular weight represented 70% of the total abundance and showed that the main source of contamination of the sediments was pyrogenic. However, petrogenic PAHs coming from oil and derivatives input is also an important contamination source to be considered.
doi_str_mv 10.5935/0103-5053.20150112
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title Polycyclic Aromatic Hydrocarbons in Superficial Sediments of the Negro River in the Amazon Region of Brazil
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