DOI: 10.1016/j.marpolbul.2016.03.033
Scopus记录号: 2-s2.0-84978323434
论文题名: Mercury concentrations in marine sediments near a former mercury cell chlor-alkali plant in eastern Canada
作者: Walker T.R.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2016
卷: 107, 期: 1 起始页码: 398
结束页码: 401
语种: 英语
英文关键词: Chlor-alkali plant
; Ecological risk
; Sediment
; Total mercury (THg)
Scopus关键词: Anoxic sediments
; Ecology
; Marine pollution
; Mercury (metal)
; Plant shutdowns
; Submarine geology
; Baseline assessment
; Chlor-alkali plants
; Coastal marine sediments
; Ecological risks
; Marine sediments
; Mercury concentrations
; Natural sediments
; Total mercuries
; Sediments
; mercury
; alkali
; mercury
; water pollutant
; biota
; coastal sediment
; concentration (composition)
; ecological impact
; marine pollution
; marine sediment
; mercury (element)
; sediment pollution
; anoxia
; Article
; bay
; bioavailability
; Canada
; concentration (parameters)
; environmental impact assessment
; geographic distribution
; marine species
; metal industry
; oxidation
; risk assessment
; sediment
; water contamination
; water quality
; analysis
; environmental monitoring
; New Brunswick
; river
; water pollutant
; Baie des Chaleurs
; Canada
; New Brunswick
; Alkalies
; Environmental Monitoring
; Geologic Sediments
; Mercury
; New Brunswick
; Rivers
; Water Pollutants, Chemical
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要: Concentrations of total mercury (THg) were measured in coastal marine sediments near a former chlor-alkali plant in Chaleur Bay, New Brunswick. The chlor-alkali plant has been a local point source of THg since operation began in 1963. Historical THg contamination of marine sediments and biota has been widely reported. No baseline assessment has been conducted following plant closure in 2008. Surface (0-2 cm) oxidized marine sediments were sampled along a single 5.2 km transect radiating from the former plant and analysed for THg. THg concentrations ranged from 0.04-0.28 μg g-1. Some localised THg concentrations exceeded Canadian marine sediment quality guidelines (n = 4), but all samples (n = 14) were significantly lower than previous studies conducted during plant operation. Plant closure (source control) and natural sediment recovery likely responsible for attenuating THg concentrations, but burial in deeper anoxic sediments may increase bioavilability of Hg that could pose ecological risks to marine biota. © 2016 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/87054
Appears in Collections: 过去全球变化的重建 全球变化的国际研究计划
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作者单位: School for Resource and Environmental Studies, Dalhousie University, Halifax, NS, Canada
Recommended Citation:
Walker T.R.. Mercury concentrations in marine sediments near a former mercury cell chlor-alkali plant in eastern Canada[J]. Marine Pollution Bulletin,2016-01-01,107(1)