Journal
MARINE POLLUTION BULLETIN
Volume 58, Issue 11, Pages 1671-1679Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2009.06.022
Keywords
SPMDs; POCIS; North Sea; Produced water
Funding
- Norwegian Research Council (NFR) [164398/S40]
- Norwegian Oil Industry Association (OLF)
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In order to assess the environmental impact of aquatic discharges from the offshore oil industry, polar organic chemical integrative samplers (POCIS) and semipermeable membrane devices (SPMDs) were deployed around an oil platform and at reference locations in the North Sea. Exposure to polycyclic aromatic hydrocarbons (PAH) and alkylated phenols (AP) was determined from passive sampler accumulations using an empirical uptake model, the dissipation of performance reference compounds and adjusted laboratory derived sampling rates. Exposure was relatively similar within 1-2 km of the discharge point, with levels dominated by short chained C1-C3 AP isomers (19-51 ng L-1) and alkylated naphthalenes, phenanthrenes and dibenzothiophenes (NPD, 29-45 ng L-1). Exposure stations showed significant differences to reference sites for NPD, but not always for more hydrophobic PAH. These concentrations are several orders of magnitude lower than those reported to give both acute and sub-lethal effects, although their long term consequences are unknown. (C) 2009 Elsevier Ltd. All rights reserved.
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