DOI: 10.1016/j.marpolbul.2016.01.042
Scopus记录号: 2-s2.0-84956613054
论文题名: Seasonal variation of methylmercury in sediment cores from the Tagus Estuary (Portugal)
作者: Monteiro C.E. ; Cesário R. ; O'Driscoll N.J. ; Nogueira M. ; Válega M. ; Caetano M. ; Canário J.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2016
卷: 104, 期: 2018-01-02 起始页码: 162
结束页码: 170
语种: 英语
英文关键词: Methylmercury
; Pore waters
; Seasonal variation
; Sediments
; Tagus Estuary
Scopus关键词: Alkylation
; Estuaries
; Sedimentation
; Water
; Ecological impacts
; Methyl mercury
; Pore waters
; Seasonal variation
; Sedimentary environment
; Spatial variations
; Tagus estuary
; Tagus estuary (Portugal)
; Sediments
; methylmercury
; humic substance
; mercury
; methylmercury derivative
; water pollutant
; concentration (composition)
; estuarine sediment
; methylmercury
; porewater
; seasonal variation
; sediment core
; sediment pollution
; spatial variation
; Article
; concentration (parameters)
; environmental impact
; estuary
; methylation
; physical chemistry
; Portugal
; sea pollution
; seasonal variation
; sediment
; summer
; suspended particulate matter
; water contamination
; water sampling
; analysis
; chemistry
; environmental monitoring
; humic substance
; procedures
; season
; sediment
; water pollutant
; Lisboa [Portugal]
; Portugal
; Tagus Estuary
; Environmental Monitoring
; Estuaries
; Geologic Sediments
; Humic Substances
; Mercury
; Methylmercury Compounds
; Portugal
; Seasons
; 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: Seasonal and spatial variations of dissolved and particulate methylmercury were evaluated for the first time in sediment cores from the Tagus Estuary. Results showed the highest MeHg concentrations in summer months indicating that the "seasonally" methylation process occurs not only at the topmost layers of the sediments but also in the deeper layers of the sediment column.The proportion of MeHg (up to 92%) in some of our pore water samples was higher than values reported in the literature for other estuaries suggesting that the sedimentary environment in the Tagus tends to favour Hg methylation.This work points to the importance of seasonal variation of the MeHg production in sediment cores. In physically dominated estuaries this enhances seasonal MeHg production in deeper sediments that can have serious ecological impacts due to resuspension or advection processes under extreme events by the increase of MeHg transported to the water column. © 2016 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/87189
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: Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, Lisboa, Portugal; Instituto Português do Mar e da Atmosfera, Rua Alfredo Magalhães Ramalho 6, Lisboa, Portugal; Department of Earth and Environmental Science, Acadia University, Wolfville, NS, Canada; Departamento de Química, Universidade de Aveiro, Campus Universitário de Santiago, Aveiro, Portugal
Recommended Citation:
Monteiro C.E.,Cesário R.,O'Driscoll N.J.,et al. Seasonal variation of methylmercury in sediment cores from the Tagus Estuary (Portugal)[J]. Marine Pollution Bulletin,2016-01-01,104(2018-01-02)