Ecological risk assessment of metals in small craft harbour sediments in Nova Scotia, Canada

Hongling Zhang; Tony R. Walker; Emily Davis; Guofeng Ma

doi:10.1016/j.marpolbul.2019.06.068

Ecological risk assessment of metals in small craft harbour sediments in Nova Scotia, Canada

Hongling Zhang, Tony R. Walker, Emily Davis, Guofeng Ma

Management

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50 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	466-475
Number of pages	10
Journal	Marine Pollution Bulletin
Volume	146
DOIs	https://doi.org/10.1016/j.marpolbul.2019.06.068
Publication status	Published - Sept 2019

Bibliographical note

Funding Information:
Thanks to DFO-SCH and PSPC for supplying sediment data. Funding was provided by NSERC Discovery Grant RGPIN-2018-04119 to T.R.W. China State Scholarship Fund (201708210328), the National Water Pollution Control and Management Science & Technology Specific Projects (2018ZX07601003-04) and the School for Resource and Environmental Studies, Dalhousie University.

Funding Information:
Thanks to DFO-SCH and PSPC for supplying sediment data. Funding was provided by NSERC Discovery Grant RGPIN-2018-04119 to T.R.W., China State Scholarship Fund ( 201708210328 ), the National Water Pollution Control and Management Science & Technology Specific Projects ( 2018ZX07601003-04 ) and the School for Resource and Environmental Studies, Dalhousie University .

Publisher Copyright:
© 2019 Elsevier Ltd

ASJC Scopus Subject Areas

Oceanography
Aquatic Science
Pollution

PubMed: MeSH publication types

Journal Article

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10.1016/j.marpolbul.2019.06.068

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abstract = "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.",

author = "Hongling Zhang and Walker, {Tony R.} and Emily Davis and Guofeng Ma",

note = "Funding Information: Thanks to DFO-SCH and PSPC for supplying sediment data. Funding was provided by NSERC Discovery Grant RGPIN-2018-04119 to T.R.W. China State Scholarship Fund (201708210328), the National Water Pollution Control and Management Science & Technology Specific Projects (2018ZX07601003-04) and the School for Resource and Environmental Studies, Dalhousie University. Funding Information: Thanks to DFO-SCH and PSPC for supplying sediment data. Funding was provided by NSERC Discovery Grant RGPIN-2018-04119 to T.R.W., China State Scholarship Fund ( 201708210328 ), the National Water Pollution Control and Management Science & Technology Specific Projects ( 2018ZX07601003-04 ) and the School for Resource and Environmental Studies, Dalhousie University . Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

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doi = "10.1016/j.marpolbul.2019.06.068",

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Ecological risk assessment of metals in small craft harbour sediments in Nova Scotia, Canada

Abstract

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