PCBs contamination in water and Mytilus edulis along the north Portuguese Atlantic Ocean coastline and analysis of potential carcinogenic risk to human health.
Mar Pollut Bull
; 207: 116823, 2024 Oct.
Article
em En
| MEDLINE
| ID: mdl-39226820
ABSTRACT
Seven seawater polychlorinated biphenyls (PCBs) were measured in water (DAP), suspended particulate matter (SPM), and blue mussels (Mytilus edulis) collected from four beaches in northwest Portugal. PCBs were extracted using solid-phase-extraction, ultrasound-extraction and QuEChERS before GC-MS analysis. The two-year annual average concentrations of PCBs in DAP, SPM and the four-year analysis in mussels were â¼ 4.4 ng/L, â¼15.9 µg/kg, and â¼ 56.0 µg/kg. The results suggest higher concentrations of PCBs in summer for SPM and in spring for mussels, mainly those collected close to the Ave River estuary. The origins of PCBs remain uncertain. Risk assessment shows that PCBs in water are unlikely to harm local biota due to their low thyroid hormone toxicity equivalents (TEQ-TH; â¼1.4E-04 ng/L and â¼ 4.1E-04 µg/kg) and on WHO toxicity equivalents (TEQ-WHO; â¼2.1E-05 ng/L and â¼ 4.9E-05 µg/kg). However, the lifetime carcinogenic risk (LCR) for humans consuming local bivalves is concerning, as it exceeds 1.0E-06.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Poluentes Químicos da Água
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Monitoramento Ambiental
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Bifenilos Policlorados
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Mytilus edulis
Limite:
Animals
/
Humans
País/Região como assunto:
Europa
Idioma:
En
Revista:
Mar Pollut Bull
Ano de publicação:
2024
Tipo de documento:
Article
País de publicação:
Reino Unido