DOI: 10.1016/j.watres.2018.01.026
Scopus记录号: 2-s2.0-85041421815
论文题名: Strontium adsorption and desorption in wetlands: Role of organic matter functional groups and environmental implications
作者: Boyer A. ; Ning P. ; Killey D. ; Klukas M. ; Rowan D. ; Simpson A.J. ; Passeport E.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 133 起始页码: 27
结束页码: 36
语种: 英语
英文关键词: Adsorption
; C-13 NMR
; Desorption
; Soil organic matter
; Strontium
; Wetland
Scopus关键词: Adsorption
; Biogeochemistry
; Biological materials
; Charcoal
; Desorption
; Groundwater
; Hydrochemistry
; Nuclear magnetic resonance
; Organic compounds
; River pollution
; Strontium
; Surface waters
; Zeolites
; Adsorption and desorptions
; Adsorption coefficients
; Environmental implications
; Hydrogeochemical
; Hydrogeochemical studies
; Radioactive contaminants
; Soil organic matters
; Wetland sediments
; Wetlands
; aliphatic compound
; carbohydrate
; carbon 13
; charcoal
; clinoptilolite
; lignin
; nitrogen
; organic carbon
; organic matter
; protein
; strontium
; strontium
; adsorption
; chemical element
; desorption
; groundwater-surface water interaction
; hydrogeochemistry
; nuclear magnetic resonance
; organic compound
; organic matter
; pollutant transport
; radionuclide
; remediation
; soil organic matter
; strontium
; substrate
; tracer
; wetland
; adsorption
; Article
; bioremediation
; carbon nuclear magnetic resonance
; desorption
; leaf litter
; moss
; priority journal
; sediment
; summer
; water contamination
; wetland
; winter
; wood
; adsorption
; chemistry
; water pollutant
; wetland
; Adsorption
; Desorption
; Organic Matter
; Soil
; Wetlands
; Bryophyta
; Adsorption
; Geologic Sediments
; Strontium
; Water Pollutants, Chemical
; Wetlands
英文摘要: Strontium (Sr) is a chemical element that is often used as a tracer in hydrogeochemical studies, and is ubiquitously distributed as a radioactive contaminant in nuclear sites in the form of strontium-90 (Sr-90). At the interface between groundwater and surface water, wetlands possess unique hydrogeochemical properties whose impact on Sr transport has not been investigated thoroughly. In this study, the adsorption and desorption of Sr was investigated on six natural wetland substrates and two mixes of exogenous media and wetland sediment: winter and summer wetland sediments, decayed cattails, wood, leaf litter, moss, bone charcoal, and clinoptilolite. The composition of the organic matter was characterized using carbon-13, solid phase Nuclear Magnetic Resonance analysis. The range of the substrates’ adsorption coefficients obtained could be explained by factors indicative of proteins in the organic matter, which were shown to support strong and poorly reversible Sr adsorption. In contrast, the proportion of carbohydrates and lignin were found to be indicative of lower adsorption coefficients and higher desorption. The implications of these results for Sr pollution remediation in wetlands are discussed. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112942
Appears in Collections: 气候减缓与适应
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作者单位: Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, M5S 35E, Canada; Environmental NMR Centre, Department of Physical and Environmental Sciences, University of Toronto, 1265 Military Trail, Toronto, M1C 1A4, Canada; Canadian Nuclear Laboratories, 286 Plant Rd, Chalk River, K0J 1J0, Canada; Department of Civil Engineering, University of Toronto, 35 St George St., Toronto, M5S 1A4, Canada
Recommended Citation:
Boyer A.,Ning P.,Killey D.,et al. Strontium adsorption and desorption in wetlands: Role of organic matter functional groups and environmental implications[J]. Water Research,2018-01-01,133