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Is there a similarity between the 2019 and 2022 oil spills that occurred on the coast of Ceará (Northeast Brazil)? An analysis based on forensic environmental geochemistry by Rufino N.A. Azevedo; Kamylla M.M. Bezerra; Ronaldo F. Nascimento; Robert K. Nelson; Christopher M. Reddy; Adriana P. Nascimento; André H.B. Oliveira; Laercio L. Martins; Rivelino M. Cavalcante is a Environmental Science article available to read on EtoBox.

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The main objective of this study was to investigate the 2019 and 2022 oil spill events that occurred off the coast of the State of Ceará, Northeastern Brazil. To further assess these mysterious oil spills, we investigated whether the oils stranded on the beaches of Ceará in 2019 and 2022 had the same origin, whether their compositional differences were due to weathering processes, and whether the materials from both were natural or industrially processed. We collected oil samples in October 2019 and January 2022, soon after their appearance on the beaches. We applied a forensic environmental geochemistry approach using both one-dimensional and two-dimensional gas chromatography to assess chemical composition. The collected material had characteristics of crude oil and not refined oils. In addition, the 2022 oil samples collected over 130 km of the east coast of Ceará had a similar chemical profile and were thus considered to originate from the same source. However, these oils had distinct biomarker profiles compared to those of the 2019 oils, including resistant terpanes and triaromatic steranes, thus excluding the hypothesis that the oil that reached the coast of Ceará in January

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Author

Rufino N.A. Azevedo; Kamylla M.M. Bezerra; Ronaldo F. Nascimento; Robert K. Nelson; Christopher M. Reddy; Adriana P. Nascimento; André H.B. Oliveira; Laercio L. Martins; Rivelino M. Cavalcante

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Environmental Science (Physical Sciences)