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U concentration and U-234/U-238 of seawater from the Okinawa Trough and Indian Ocean using MC-ICPMS with SEM protocols

文献类型：期刊论文

作者Wang, Lisheng1; Ma, Zhibang1; Sun, Zhilei2,3; Wang, Yejian4; Wang, Xuefeng1; Cheng, Hai5,6; Xiao, Jule1
刊名MARINE CHEMISTRY
出版日期2017-11-20
卷号196页码:71-80
关键词Seawater Coral U-234/u-238 Mc-icpms Okinawa Trough
ISSN号0304-4203
DOI10.1016/j.marchem.2017.08.001
文献子类Article
英文摘要The Okinawa Trough, a back-arc basin formed by extension within the continental lithosphere, is one of the most significant ocean basins between the East China Sea and the Pacific Ocean. In an attempt to constrain the U content and the U-234/U-238 of seawater, five depths vertical seawater profiles from the Okinawa Trough, two from the Indian Ocean and one from the South China Sea were investigated by MC-ICPMS. The method allows us to contribute most reliable uranium isotopic measurement in seawater and greatly reduces sample size. Results showed that the U contents of seawater profiles for Okinawa Trough were from 3.153 to 3.235 ppb, with an average value of 3.186 +/- 0.040 (2 sigma, n = 37), Indian Ocean were from 3.255 to 3.283 ppb with a mean value of 3.272 +/- 0.018 (2 sigma, n = 19), and South China Sea were from 3.253 to 3.271 averaging 3.263 +/- 0.018 (2 sigma, n = 3) ppb. Similarly, we obtained delta U-234 values of 146.1 +/- 1.2, 145.1 +/- 1.4, and 145.8 +/- 0.50 parts per thousand for Okinawa Trough, Indian Ocean and South China Sea, with a mean of 145.7 +/- 1.0 parts per thousand, in good agreement with previous reports within the error limits. With two-ml samples in the Okinawa Trough, it gives a mean delta U-234 of 145.8 +/- 1.0 parts per thousand which is identical to that observed for 7-ml seawater within the 95% confidence level. These results suggest that the distribution of delta U-234 is homogeneous in the Okinawa Trough and followed U conservative behavior. We also obtained average delta U-234 values of 146.9 +/- 2.1 parts per thousand (2 sigma, n = 6) for Acropora coral from the Xisha Islands in the South China Sea. All results show no marked differences with the open ocean and provide significant geochemical information for the study of environmental change in the East China Sea.
WOS关键词PLASMA-MASS SPECTROMETRY ; CORAL MORTALITY EVENTS ; GREAT-BARRIER-REEF ; SOUTH CHINA SEA ; ISOTOPE RATIOS ; BALTIC SEA ; INITIAL TH-230/TH-232 ; PRECISION-MEASUREMENT ; URANIUM ISOTOPES ; KALIX RIVER
WOS研究方向Chemistry ; Oceanography
语种英语
WOS记录号WOS:000415773500007
出版者ELSEVIER SCIENCE BV
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences(XDB06020204) ; Innovation Project of Institute of Geology and Geophysics, Chinese Academy of Sciences(51601650) ; National Key Basic Research Program of China(2013CB429703) ; China Geological Survey Project(DD20160218) ; China Ocean Mineral Resources R&D Association Project(DY125-12-R-03) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB06020204) ; Innovation Project of Institute of Geology and Geophysics, Chinese Academy of Sciences(51601650) ; National Key Basic Research Program of China(2013CB429703) ; China Geological Survey Project(DD20160218) ; China Ocean Mineral Resources R&D Association Project(DY125-12-R-03) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB06020204) ; Innovation Project of Institute of Geology and Geophysics, Chinese Academy of Sciences(51601650) ; National Key Basic Research Program of China(2013CB429703) ; China Geological Survey Project(DD20160218) ; China Ocean Mineral Resources R&D Association Project(DY125-12-R-03) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB06020204) ; Innovation Project of Institute of Geology and Geophysics, Chinese Academy of Sciences(51601650) ; National Key Basic Research Program of China(2013CB429703) ; China Geological Survey Project(DD20160218) ; China Ocean Mineral Resources R&D Association Project(DY125-12-R-03)
源URL[http://ir.iggcas.ac.cn/handle/132A11/62457]  
专题地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者Ma, Zhibang
作者单位1.Chinese Acad Sci, Key Lab Cenozo Geol & Environm, Inst Geol & Geophys, Beijing 100029, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266061, Peoples R China
3.Qingdao Inst Marine Geol, Qingdao 266061, Peoples R China
4.State Ocean Adm, Inst Oceanog 2, Key Lab Submarine Geosci, Hangzhou 310012, Zhejiang, Peoples R China
5.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Shaanxi, Peoples R China
6.Univ Minnesota, Dept Earth Sci, Minneapolis, MN 55455 USA
推荐引用方式
GB/T 7714		 Wang, Lisheng,Ma, Zhibang,Sun, Zhilei,et al. U concentration and U-234/U-238 of seawater from the Okinawa Trough and Indian Ocean using MC-ICPMS with SEM protocols[J]. MARINE CHEMISTRY,2017,196:71-80.
APA Wang, Lisheng.,Ma, Zhibang.,Sun, Zhilei.,Wang, Yejian.,Wang, Xuefeng.,...&Xiao, Jule.(2017).U concentration and U-234/U-238 of seawater from the Okinawa Trough and Indian Ocean using MC-ICPMS with SEM protocols.MARINE CHEMISTRY,196,71-80.
MLA Wang, Lisheng,et al."U concentration and U-234/U-238 of seawater from the Okinawa Trough and Indian Ocean using MC-ICPMS with SEM protocols".MARINE CHEMISTRY 196(2017):71-80.

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来源：地质与地球物理研究所

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