DOI: 10.1016/j.marpolbul.2015.02.035
Scopus记录号: 2-s2.0-84933676985
论文题名: Environmental controls on the speciation and distribution of mercury in surface sediments of a tropical estuary, India
作者: Chakraborty P. ; Babu P.V.R.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2015
卷: 95, 期: 1 起始页码: 350
结束页码: 357
语种: 英语
英文关键词: Hg distribution
; Hg-sediment interactions
; Hg-TOC interactions
; Intra-annual variation of Hg
; River discharge and Hg
; Salinity and Hg
Scopus关键词: Atmospheric thermodynamics
; Chemical speciation
; Estuaries
; Organic carbon
; Rivers
; Sediments
; Annual variations
; Environmental control
; Hg concentrations
; Physico - chemical parameters
; Post-monsoon period
; River discharge
; Surface sediments
; Total Organic Carbon
; Mercury (metal)
; mercury
; organic carbon
; mercury
; water pollutant
; annual variation
; estuarine sediment
; mercury (element)
; river discharge
; salinity
; sediment pollution
; spatial distribution
; total organic carbon
; tropical environment
; Article
; concentration (parameters)
; environmental management
; environmental parameters
; estuary
; India
; physical chemistry
; salinity
; sediment
; water contamination
; analysis
; chemistry
; environmental monitoring
; estuary
; river
; water pollutant
; Andhra Pradesh
; Godavari Estuary
; India
; Environmental Monitoring
; Estuaries
; Geologic Sediments
; India
; Mercury
; 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: Distribution and speciation of mercury (Hg) in the sediments from a tropical estuary (Godavari estuary) was influenced by the changing physico-chemical parameters of the overlying water column. The sediments from the upstream and downstream of the estuary were uncontaminated but the sediments from the middle of the estuary were contaminated by Hg. The concentrations of Hg became considerably less during the monsoon and post monsoon period. Total Hg concentrations and its speciation (at the middle of the estuary) were dependent on the salinity of the overlying water column. However, salinity had little or no effect on Hg association with organic phases in the sediments at downstream. Increasing pH of the overlying water column corresponded with an increase in the total Hg content in the sediments. Total organic carbon in the sediments played an important role in controlling Hg partitioning in the system. Uncomplexed Hg binding ligands were available in the sediments. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/86056
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: Geological Oceanography Division, National Institute of Oceanography, Dona Paula, Goa, India
Recommended Citation:
Chakraborty P.,Babu P.V.R.. Environmental controls on the speciation and distribution of mercury in surface sediments of a tropical estuary, India[J]. Marine Pollution Bulletin,2015-01-01,95(1)