DOI: 10.1016/j.marpolbul.2016.07.004
Scopus记录号: 2-s2.0-84979536535
论文题名: Radium isotope (223Ra, 224Ra, 226Ra and 228Ra) distribution near Brazil's largest port, Paranaguá Bay, Brazil
作者: Dias T.H. ; de Oliveira J. ; Sanders C.J. ; Carvalho F. ; Sanders L.M. ; Machado E.C. ; Sá F.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2016
卷: 111, 期: 2018-01-02 起始页码: 443
结束页码: 448
语种: 英语
英文关键词: Estuary
; Mangrove
; Radionuclide tracers
; Radium
; River
; Surface sediment
Scopus关键词: Estuaries
; Groundwater
; Isotopes
; Particle size
; Residence time distribution
; Rivers
; Saline water
; Sediments
; Estuarine waters
; Groundwater sources
; Isotope distributions
; Mangrove
; Natural sources
; Radionuclide tracers
; Radium isotopes
; Surface sediments
; Radium
; ground water
; radium
; radium 223
; radium 224
; radium 226
; radium 228
; unclassified drug
; fresh water
; radium
; radium 224
; thorium
; water pollutant
; concentration (composition)
; estuarine pollution
; estuarine sediment
; isotopic ratio
; mangrove
; pollutant transport
; radionuclide
; radium isotope
; river pollution
; tracer
; water column
; Article
; Brazil
; chemical analysis
; concentration (parameters)
; environmental impact assessment
; environmental monitoring
; estuary
; geographic distribution
; half life time
; physical parameters
; pollution monitoring
; radioactive contamination
; radioactivity
; retention time
; river
; sediment
; water analysis
; water pollution
; analysis
; bay
; chemistry
; procedures
; water pollutant
; Brazil
; Parana [Brazil]
; Paranagua Bay
; Bays
; Brazil
; Environmental Monitoring
; Estuaries
; Fresh Water
; Geologic Sediments
; Groundwater
; Radium
; Rivers
; Thorium
; Water Pollutants, Chemical
; Water Pollutants, Radioactive
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要: This work investigates the 223Ra, 224Ra, 226Ra and 228Ra isotope distribution in river, estuarine waters and sediments of the Paranaguá Estuarine Complex (PEC). The stratification of the Ra isotopes along water columns indicate differing natural sources. In sediments, the radium isotope activities was inversely proportional to the particle size. The highest concentrations of 223Ra, 224Ra, 226Ra and 228Ra in the water column were found in the bottom more saline waters and towards the inner of the estuary. These relatively high concentrations towards the bottom of the estuary may be attributed to the influence of tidally driven groundwater source and desorption from particles at the maximum turbidity zone. The apparent river water ages from the radium isotope ratios, 223Ra/224Ra and 223Ra/228Ra, indicate that the principal rivers that flow into the estuary have residence times from between 6 and 11 days. © 2016 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/86730
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 Estudos do Mar da Universidade Federal do Paraná, Caixa Postal 61, Pontal do Paraná, PR, Brazil; Instituto de Pesquisas Energéticas e Nucleares (IPEN), Av. Prof. Lineu Prestes, 2242, São Paulo, SP, Brazil; National Marine Science Centre, School of Environment, Science and Engineering, Southern Cross University, PO Box 4321, Coffs Harbour, NSW, Australia; Instituto de Radioproteção e Dosimetria (IRD), Av. Salvador Allende-Jacarepaguá, Rio de Janeiro, RJ, Brazil
Recommended Citation:
Dias T.H.,de Oliveira J.,Sanders C.J.,et al. Radium isotope (223Ra, 224Ra, 226Ra and 228Ra) distribution near Brazil's largest port, Paranaguá Bay, Brazil[J]. Marine Pollution Bulletin,2016-01-01,111(2018-01-02)