期刊
MARINE POLLUTION BULLETIN
卷 114, 期 2, 页码 860-866出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2016.11.010
关键词
Toxicity; Bilge water; Oil pollution; Surfactants; Copepods; Microtox
资金
- Wahlstroms Foundation
- Wilhelm and Martina Lundgren Foundation
- Adlerbertska Research Foundation
- BONUS - project ZEB
Water accumulating in the bottom of ships (bilge water), contains a mixture of oil, detergents and other compounds from on board activities. To evaluate ecological effects of released bilge water the chemical composition and toxicity of treated bilge water from seven passenger ships was analysed. The oil content was below 15 mg L-1, the threshold for legal discharge, in all but one ship. Still, significant reductions in feeding and reproduction of Acartia tonsa were found after 48 h exposure in dilutions with 2.5-5% of bilge water. Mortality was significant at dilutions of 5-10% in 4 of the 5 bilge water samples. Surfactants were the most significant contributor to the toxicity on copepod vital rates and survival. Toxicity was also tested with Microtox where an EC50 was found at dilutions between 43% and 52%. The results show that ecological effects might occur also in diluted suspensions of bilge water. (C) 2016 Elsevier Ltd. All rights reserved.
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