Polycyclic aromatic hydrocarbons in seawater after the mysterious oil spill of 2019 on the Pernambuco coast, northeast Brazil

Polycyclic aromatic hydrocarbons in seawater after the mysterious oil spill of 2019 on the Pernambuco coast, northeast Brazil

In 2019, one of Brazil's most significant environmental disasters occurred, involving an oil spill that directly affected Pernambuco state. Contamination along the coast was evaluated by the quantification of polycyclic aromatic hydrocarbons (PAHs) in fifty seawater samples collected in the sum...

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Bibliographic Details
Published in:Marine pollution bulletin Vol. 203; p. 116395
Main Authors: da S. Moreira, Thayane Cristina, de Oliveira, Ana Flávia B., de Lucena, Pedro Gabriel C., do Nascimento, Estefani S., de Almeida, Leonardo M.F., de Araújo-Castro, Cristiane Maria V., Rojas, Lino Angel V., Yogui, Gilvan T., Zanardi-Lamardo, Eliete, Santos, Jandyson M.
Format: Journal Article
Language:English
Published: England Elsevier Ltd 01-06-2024
Subjects:
Atlantic Ocean
Brazil
Environmental contamination
Environmental Monitoring
Fluorescence
Gas chromatography
Gas Chromatography-Mass Spectrometry
Oil spill
Petroleum - analysis
Petroleum Pollution
Polycyclic aromatic hydrocarbons
Polycyclic Aromatic Hydrocarbons - analysis
Seawater
Seawater - chemistry
Water Pollutants, Chemical - analysis
Brazil
Atlantic Ocean
Oil spill
Fluorescence
Gas chromatography
Environmental contamination
Polycyclic aromatic hydrocarbons
Seawater
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Summary:In 2019, one of Brazil's most significant environmental disasters occurred, involving an oil spill that directly affected Pernambuco state. Contamination along the coast was evaluated by the quantification of polycyclic aromatic hydrocarbons (PAHs) in fifty seawater samples collected in the summer and winter of 2021. Analysis using fluorescence spectroscopy revealed that for all the samples, levels of dissolved/dispersed petroleum hydrocarbons (DDPHs) were higher than the regional baseline for tropical western shores of the Atlantic Ocean. GC–MS analyses quantified 17 PAHs in the samples, with highest total PAHs concentrations of 234 ng L−1 in summer and 33.3 ng L−1 in winter, which were consistent with the highest risks observed in ecotoxicity assays. The use of diagnostic ratios showed that the coast was impacted by a mixture of PAHs from petrogenic and pyrolytic sources. The results indicated the need for continuous monitoring of the regions affected by the 2019 spill. •Polycyclic aromatic hydrocarbons (PAHs) after the 2019 oil spill in Brazil•Environmental contamination by PAHs in seawater samples from Pernambuco, Brazil•Distribution of PAHs indicated petrogenic and/or pyrogenic sources of contamination.•High environmental risks were detected using ecotoxicity assays.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:0025-326X
1879-3363
DOI:10.1016/j.marpolbul.2024.116395