Produção Nacional
Revisado por pares
Historical inputs of polycyclic aromatic hydrocarbons in the preserved tropical estuary of the Itapicuru River, Bahia, Brazil
2020; Elsevier BV; Volume: 156; Linguagem: Inglês
10.1016/j.marpolbul.2020.111218
ISSN1879-3363
AutoresLucas Medeiros Guimarães, Elvis Joacir de França, Gilberto N. Arruda, Ana Cecília Rizzatti de Albergaria‐Barbosa,
Tópico(s)Oil Spill Detection and Mitigation
ResumoThe aim of present study was to evaluate temporal changes in the distribution of polycyclic aromatic hydrocarbons (PAHs) in the estuary of the Itapicuru (Brazil). A sediment core was sampled in the study area. Concentrations of the 16 priority PAHs were analyzed using gas chromatography coupled to a mass spectrometry. A gas flow proportional counter was used to estimate the sedimentation rate through the determination of 210Pb. Granulometric fractions and total organic carbon (TOC) concentrations were also evaluated. Concentrations of TOC and PAHs ranged from 0.65 to 2.51% and 1.98 to 43.1 ng g-1 (dry weight), respectively. Significant correlations (p < .05) were found between the mud content in the sediment core samples and concentrations of both TOC and PAHs. Higher PAH concentrations occurred after the 1950s. The main sources of PAHs over time were local human activities on the northern coast of the state of Bahia.
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