| Texto completo | |
| Autor(es): |
Lourenco, Rafael Andre
;
Marcelino, Rafael Patrick R.
;
Lube, Gabrielle Vieira
;
Lassalle, Guillaume
;
Scafutto, Rebecca Del'Papa Moreira
;
de Souza Filho, Carlos Roberto
Número total de Autores: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Marine Pollution Bulletin; v. 208, p. 6-pg., 2024-09-17. |
| Resumo | |
Sunken oil mats (SOMs) pose a significant threat to marine ecosystems, yet their long-term fate and weathering processes remain poorly understood. This study investigates the degradation of biomarkers in a SOM sample collected from the Brazilian coast following the long-lasting 2019 oil spill. The SOM clearly distinguished from spilt oil and were attributed to tanker-washing residues. Analysis of its sections revealed a consistent depletion pattern, associated with losses of volatile and photooxidation-sensitive compounds, even in the most preserved inner fractions, this suggests weathering of the oil prior SOM formation. While biodegradation was minor, photooxidation revealed a significant weathering factor, especially for aromatic compounds as indicated by preferential degradation of highly-alkylated tricyclic aromatic sulfur heterocycles, and specific methylpyrenes and benzofluorenes. This study underscore the complex interplay of weathering processes shaping the fate of SOMs and the importance of biomarker-based diagnosis in assessing the origin and ecological impacts of longlasting oil spills. (AU) | |
| Processo FAPESP: | 22/14244-8 - Determinação de esteróis biogênicos em ambiente antártico, ao longo dos últimos 20 anos, e a relação com mudanças ambientais recentes. |
| Beneficiário: | Gabrielle Vieira Lube |
| Modalidade de apoio: | Bolsas no Brasil - Mestrado |