Spatiotemporal characterization of metals in small craft harbour sediments in Nova Scotia, Canada.
Nova Scotia (NS)
Sediment metal concentrations
Sediment quality guidelines (SQGs)
Small craft harbours (SCHs)
Journal
Marine pollution bulletin
ISSN: 1879-3363
Titre abrégé: Mar Pollut Bull
Pays: England
ID NLM: 0260231
Informations de publication
Date de publication:
Mar 2019
Mar 2019
Historique:
received:
08
01
2019
revised:
29
01
2019
accepted:
04
02
2019
entrez:
27
2
2019
pubmed:
26
2
2019
medline:
9
4
2019
Statut:
ppublish
Résumé
Spatiotemporal (2001-2017) characterization of sediment metal concentrations were assessed in 31 small craft harbours (SCHs) in Nova Scotia, Canada by analyzing secondary data from government sediment assessment reports. Surficial sediment samples (n = 576) were collected prior to routine maintenance or constriction dredging activities. Sediment metal concentration ranges were 0.5-62 (As), 0.05-3.8 (Cd), 1-305 (Cr), 0.5-220 (Cu), 0.003-1.85 (Hg), 0.73-583 (Pb) and 5-2300 (Zn) mg/kg (dw), respectively. Most sediment metal concentrations (>56% of samples) were below low effect level and >96% were below high effect level sediment quality guidelines, suggesting limited ecological impairment to marine biota. Despite wide temporal coverage (16 years), large variation in sediment concentrations across SCHs were likely due to regular dredging activities preventing long-term accumulation of contaminants. Spatial distribution and enrichment factor results revealed that Canso was most impacted by metals, followed by Clarks Harbour.
Identifiants
pubmed: 30803670
pii: S0025-326X(19)30092-X
doi: 10.1016/j.marpolbul.2019.02.004
pii:
doi:
Substances chimiques
Metals, Heavy
0
Water Pollutants, Chemical
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
493-502Informations de copyright
Copyright © 2019 Elsevier Ltd. All rights reserved.