DOI: 10.1016/j.marpolbul.2014.12.049
Scopus记录号: 2-s2.0-84925355037
论文题名: Mercury distribution, methylation and volatilization in microcosms with and without the sea anemone Bunodosoma caissarum
作者: Rizzini Ansari N. ; Correia R.R.S. ; Fernandez M.A. ; Cordeiro R.C. ; Guimarães J.R.D.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2015
卷: 92, 期: 2018-01-02 起始页码: 105
结束页码: 112
语种: 英语
英文关键词: Bioaccumulation
; Biomonitor
; Cnidaria
; Methylmercury
; Seawater
Scopus关键词: Alkylation
; Bioaccumulation
; Biochemistry
; Biogeochemistry
; Marine biology
; Methylation
; Microbiology
; Microorganisms
; Seawater
; Aquatic environments
; Bio-concentration factors
; Biogeochemical cycle
; Biomonitors
; Cnidaria
; Liquid Scintillation
; Mercury distribution
; Methyl mercury
; Mercury (metal)
; mercury
; mercury 203
; methylmercury
; silicone
; mercury
; methylmercury derivative
; sea water
; bioaccumulation
; biological uptake
; biomonitoring
; coral
; depuration
; methylation
; methylmercury
; microcosm
; pollutant transport
; seawater
; volatilization
; adsorption kinetics
; animal experiment
; animal tissue
; Article
; bioaccumulation
; Bunodosoma caissarum
; concentration (parameters)
; controlled study
; environmental monitoring
; gamma spectrometry
; liquid scintillation counting
; methylation
; microcosm
; mucus secretion
; nonhuman
; quantitative analysis
; reduction kinetics
; sea anemone
; surface property
; volatilization
; animal
; aquatic species
; chemistry
; metabolism
; methylation
; sea anemone
; theoretical model
; volatilization
; Actiniaria
; Bunodosoma caissarum
; Cnidaria
; Animals
; Aquatic Organisms
; Mercury
; Methylation
; Methylmercury Compounds
; Models, Theoretical
; Sea Anemones
; Seawater
; Volatilization
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要: Mercury (Hg) has a complex biogeochemical cycle in aquatic environments. Its most toxic form, methylmercury (MeHg), is produced by microorganisms. This study investigated how the sea anemone Bunodosoma caissarum affects Hg distribution, methylation and volatilization in laboratory model systems. 203Hg was added to microcosms and its distribution in seawater, specimens and air was periodically measured by gamma spectrometry. MeHg was measured by liquid scintillation. After the uptake period, specimens had a bioconcentration factor of 70 and in microcosms with and without B. caissarum, respectively 0.05% and 0.32% of the initial spike was found as MeHg. After depuration, MeHg in specimens ranged from 0.2% to 2.4% of total Hg. Microcosms with B. caissarum had higher Hg volatilization (58%) than controls (17%), possibly due to Hg2+ reduction mediated by microorganisms associated with its tissues and mucus secretions. Marine organisms and their associated microbiota may play a role in Hg and MeHg cycling. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/86191
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: Departamento de Geoquímica, Universidade Federal Fluminense, Instituto de Química, Outeiro de São João Batista s/n, 5 andar, Centro, Niterói, Brazil; Instituto de Biofísica, Universidade Federal do Rio de Janeiro, Bloco G/CCS/Ilha do Fundão, Brazil; Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro, São Francisco Xavier St. 524,4018E, Maracanã, Brazil
Recommended Citation:
Rizzini Ansari N.,Correia R.R.S.,Fernandez M.A.,et al. Mercury distribution, methylation and volatilization in microcosms with and without the sea anemone Bunodosoma caissarum[J]. Marine Pollution Bulletin,2015-01-01,92(2018-01-02)