Journal
MARINE POLLUTION BULLETIN
Volume 62, Issue 7, Pages 1498-1505Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2011.04.009
Keywords
Produced water; Mussel; Lysosomal membrane stability; Micronuclei; Bioaccumulation; Monitoring
Funding
- ConocoPhillips Scandinavia AS
- Total EP Norge AS
- Norwegian Continental Shelf
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In order to study the impact of produced water (PW) from a North Sea oil field on blue mussels (Mytilus edulis), chemical and biological markers were selected. A laboratory exposure (0.125%, 0.25% and 0.5% of PW) and a field study (6 stations 0.2-2 km from a PW discharge point) were conducted. In the laboratory study, PAH bioaccumulation increased in mussel soft tissue even at the lowest exposure dose. Micronuclei frequency demonstrated a dose-response pattern, whereas lysosomal membrane stability showed tendency towards a dose-response pattern. The same markers were assessed in the field study, biomarker analyses were consistent with the contamination level, as evaluated by mussel polycyclic aromatic hydrocarbons body burden. Overall, obtained results confirmed the value of an ecotoxicological approach for a scientifically sound characterisation of biological effects induced by offshore oilfield operational discharges. (C) 2011 Elsevier Ltd. All rights reserved.
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