期刊
MARINE POLLUTION BULLETIN
卷 146, 期 -, 页码 466-475出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2019.06.068
关键词
Ecological risk assessment (ERA); Marine sediments; Metal contaminants; Fishing harbours (SCHs)
资金
- NSERC [RGPIN-2018-04119]
- China State Scholarship Fund [201708210328]
- National Water Pollution Control and Management Science & Technology Specific Projects [20182X07601003-04]
- School for Resource and Environmental Studies, Dalhousie University
Ecological risk assessment of metals (As, Cd, Cr, Cu, Hg, Ni, Pb and Zn) in surface sediments from 31 small craft harbours (SCHs) in Nova Scotia, Canada was conducted using multiple risk assessment approaches. Approaches used were contamination factor, pollution load index, geoaccumulation index, potential ecological risk factor for individual metals, comprehensive potential ecological risk index, mean probable effect level quotient and mean effects range median quotient. Results indicated most SCHs exhibited low ecological risk from sediment metal concentrations, except for two harbours. Metal contamination was highest in Canso Harbour, followed by Clarks Harbour. SCH sediments were only slightly contaminated with low probability of pollution according to mean probable effect level and mean effects range median quotients. However, pollution load and geoaccumulation indexes indicated Cd and Hg had the highest metal contamination across SCH sediments. Cadmium and Hg had the highest potential ecological risk, respectively compared to other metals.
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