Microscale Simultaneous Measurement of Carbon and Nitrogen Isotopes on Natural Diamond
Microscale Simultaneous Measurement of Carbon and Nitrogen Isotopes on Natural Diamond
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天然钻石碳氮同位素的微尺度同步测量
DOI:
10.1111/ggr.12485
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发表时间:
2023
影响因子:
3.8
通讯作者:
Valley, John W.
中科院分区:
文献类型:
--
作者:
Ishida, Akizumi;Kitajima, Kouki;Hashizume, Ko;Spicuzza, Michael J.;Zaitsev, Alexander;Schulze, Daniel J.;Valley, John W.
Simultaneous analysis of carbon and nitrogen isotope ratios by SIMS was applied for the first‐time to a natural diamond from the Kelsey Lake kimberlite, State Line Distinct, Colorado (UWD‐1). Thisin situprocedure is faster, reduces sample size for analysis, and measures both isotope ratios from a single ~ 10 μm diameter pit, a critical advantage for zoned diamonds. The carbon isotope ratio (expressed as δ13CVPDB) of the bulk UWD‐1 crystal, determined by the conventional combustion method in the present study, is ‐5.9‰ ± 0.2‰ (VPDB, 2s). Nitrogen mass fraction ([N]) and isotope ratio (expressed as δ15NAir) were determined by stepwise combustion and gas‐source mass‐spectrometry, resulting in 553 ± 64 μg g‐1and ‐6.7‰ ± 1.1‰ (Air, 2s), respectively. Secondary ions of12C2‐,12C13C‐,12C14N‐, and12C15N‐were simultaneously measured by SIMS using three Faraday cups and one electron multiplier. The spot‐to‐spot reproducibility of δ13C and δ15N values for the UWD‐1 (178 spots on sixteen chips, 10 μm spots), were 0.3‰ and 1.6‰, respectively (2s). While12C14N‐/12C2‐ratios, which are an indicator for [N], varied up to 12% among these sixteen chips, such variation did not correlate with either δ13C or δ15N values. We propose that UWD‐1 is a suitable reference sample for microscalein situanalysis of δ13C and δ15N values in diamond samples.
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影响因子:
5
作者:
K. Smart;T. Chacko;T. Stachel;K. Muehlenbachs;R. Stern;L. Heaman
通讯作者:
L. Heaman
影响因子:
5
作者:
P. Deines;J. Harris;J. Gurney
通讯作者:
P. Deines;J. Harris;J. Gurney
影响因子:
3.8
作者:
Ishida, Akizumi;Kitajima, Kouki;Williford, Kenneth H.;Tuite, Michael L.;Kakegawa, Takeshi;Valley, John W.
通讯作者:
Valley, John W.
影响因子:
3.9
作者:
G. Bulanova;D. G. Pearson;E. Hauri;B.J Griffin
通讯作者:
G. Bulanova;D. G. Pearson;E. Hauri;B.J Griffin
影响因子:
3.9
作者:
D. Petts;T. Chacko;T. Stachel;R. Stern;L. Heaman
通讯作者:
D. Petts;T. Chacko;T. Stachel;R. Stern;L. Heaman