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Measurements of water content and D/H ratio in apatite and silicate glasses using a NanoSIMS 50L
Hu, Sen; Lin, Yangting; Zhang, Jianchao; Hao, Jialong; Yang, Wei; Deng, Liwei
2015
Source PublicationJOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
Volume30Issue:4Pages:967-978
SubtypeArticle
AbstractWater plays an important role in evolution of the Earth, Mars, Moon and other planets, with H isotopes used as a crucial tracer for fractionation processes and water reservoirs. In order to accurately and precisely measure water contents and D/H ratios of apatite and silicate glass with high lateral resolution, we carried out a long term measurement with a NanoSIMS 50L, with special consideration for the H background, calibration of water content and instrumental mass fractionation. A detection limit of <10 ppm of water content has been achieved mainly by reducing the level of the H background, via improving vacuum and using a high primary beam current of up to 1 nA and a blanking technique. The measurements were carried out in three modes of detector configuration. In multicollection isotope mode, all H-1(-), D-2(-), C-12(-) and O-18(-) were measured simultaneously. Apatite and silicate glasses with water contents of <1.2 wt% were plotted on the same water content calibration curve with a slope of 0.704 +/- 0.037 (2SD). In peak jump isotope mode, H-1(-), D-2(-) and C-12(-) were first measured simultaneously at a magnetic field BF1, and then O-18(-) and other elements if needed at BF2 by switching the magnetic field. In this mode, apatite and MORB glass standards also share the same water content calibration curve with a slightly higher slope (0.786 +/- 0.054, 2SD) relative to that of the multicollection isotope mode. In these two isotope modes, apatite and silicate glass standards have similar instrumental mass fractionation of H isotopes within the analytical uncertainty (45 parts per thousand, 2SD) and similar precisions on water contents, however, the peak jump isotope mode can determine the volatile element contents and chlorine isotopes. In multicollection element mode, (OH-)-O-16-H-1 (for water content) and O-18(-) were measured simultaneously, accompanied usually by other volatile elements. The slope of the water content calibration curve of apatite (3.727 +/- 0.112, 2SD) significantly differs from that of silicate glass (0.873 +/- 0.049, 2SD). Multicollection element mode can only determine the water and volatile element contents with two times higher sensitivity than that of two isotope modes.
Department地球深部结构与过程研究室
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1039/c4ja00417e
Funding OrganizationNational Natural Science Foundation of China(41273077 ; National Natural Science Foundation of China(41273077 ; 41221002 ; 41221002 ; 41103031) ; 41103031) ; National Natural Science Foundation of China(41273077 ; National Natural Science Foundation of China(41273077 ; 41221002 ; 41221002 ; 41103031) ; 41103031)
WOS KeywordNOMINALLY ANHYDROUS MINERALS ; MELT INCLUSIONS ; HYDROGEN ; ABUNDANCES ; DEUTERIUM ; SIMS ; SPECIATION ; FTIR
Indexed BySCI
Language英语
Funding OrganizationNational Natural Science Foundation of China(41273077 ; National Natural Science Foundation of China(41273077 ; 41221002 ; 41221002 ; 41103031) ; 41103031) ; National Natural Science Foundation of China(41273077 ; National Natural Science Foundation of China(41273077 ; 41221002 ; 41221002 ; 41103031) ; 41103031)
WOS Research AreaChemistry ; Spectroscopy
WOS SubjectChemistry, Analytical ; Spectroscopy
WOS IDWOS:000351766400017
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/7593
Collection地球深部结构与过程研究室
AffiliationChinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
Recommended Citation
GB/T 7714
Hu, Sen,Lin, Yangting,Zhang, Jianchao,et al. Measurements of water content and D/H ratio in apatite and silicate glasses using a NanoSIMS 50L[J]. JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY,2015,30(4):967-978.
APA Hu, Sen,Lin, Yangting,Zhang, Jianchao,Hao, Jialong,Yang, Wei,&Deng, Liwei.(2015).Measurements of water content and D/H ratio in apatite and silicate glasses using a NanoSIMS 50L.JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY,30(4),967-978.
MLA Hu, Sen,et al."Measurements of water content and D/H ratio in apatite and silicate glasses using a NanoSIMS 50L".JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY 30.4(2015):967-978.
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