DOI: 10.1016/j.marpolbul.2014.09.055
Scopus记录号: 2-s2.0-84913602956
论文题名: Organic matter and pyritization relationship in recent sediments from a tropical and eutrophic bay
作者: Sabadini-Santos E. ; Senez T.M. ; Silva T.S. ; Moreira M.R. ; Mendonça-Filho J.G. ; Santelli R.E. ; Crapez M.A.C.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2014
卷: 89, 期: 2018-01-02 起始页码: 220
结束页码: 228
语种: 英语
英文关键词: Bacteria
; Biopolymers
; Diagenesis
; DOP
; DTMP
; Guanabara Bay
Scopus关键词: Bacteria
; Biomolecules
; Biopolymers
; Cadmium
; Copper
; Iron
; Lead
; Manganese
; Pyrites
; Sediments
; Sewage
; Sulfur
; Trace elements
; Diagenesis
; DOP
; DTMP
; Guanabara Bay
; Iron concentrations
; Maximum concentrations
; Sulfate reduction
; Total Organic Carbon
; Organic carbon
; arsenic
; cadmium
; chromium
; cobalt
; copper
; iron
; lead
; manganese
; nickel
; pyrite
; reactive sulfur species
; sulfate
; zinc
; heavy metal
; iron
; metal
; sewage
; sulfide
; sulfur
; trace element
; concentration (composition)
; diagenesis
; eutrophic environment
; iron
; marine pollution
; polymer
; sediment pollution
; sulfur
; total organic carbon
; Article
; bay
; concentration (parameters)
; controlled study
; degree of pyritization
; environmental parameters
; Guanabara bay
; limit of detection
; sediment
; sewage
; total organic carbon
; trend study
; analysis
; environmental monitoring
; eutrophication
; sediment
; Brazil
; Guanabara Bay
; Rio de Janeiro [Brazil]
; Bays
; Environmental Monitoring
; Eutrophication
; Geologic Sediments
; Iron
; Metals
; Metals, Heavy
; Sewage
; Sulfides
; Sulfur
; Trace Elements
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要: The degree of pyritization (DOP) and the extension of metals incorporation into pyrite was investigated at Guanabara Bay sediments. Maximum concentrations of total organic carbon (TOC), total sulfur, biopolymers and viable bacteria cells were observed in silted stations close to discharge points of sewage and minimum concentrations at sandy stations at the entrance of the bay. Pyrite iron concentrations (Fepy ) was always lower than the reactive iron and Fepy were below the detection limit at sandy stations. The same trend was found to metals, which its degree of pyritization was Mn=Cu>As=Co>Ni>Cd>Zn≫Pb>Cr. The bay gathers all required factors to sulfate reduction and pyrite formation, once the C:S ratio express the reduced tendency conditions, almost half of the TOC present in its sediments is labile and both reactive sulfur and iron are available. However the degree of trace metals pyritization did not exceed 20%, consistent with the median DOP (29%). © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/85839
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, Instituto de Química, Universidade Federal Fluminense, Niterói, RJ, Brazil; Departamento de Biologia Marinha, Instituto de Biologia, Universidade Federal Fluminense, Niterói, RJ, Brazil; Laboratório de Palinofácies and Fácies Orgânica (LAFO), Departamento de Geologia, Instituto de Geociências, Universidade Federal do Rio de Janeiro, RJ, Brazil; Departamento de Química Analítica, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
Recommended Citation:
Sabadini-Santos E.,Senez T.M.,Silva T.S.,et al. Organic matter and pyritization relationship in recent sediments from a tropical and eutrophic bay[J]. Marine Pollution Bulletin,2014-01-01,89(2018-01-02)