Determination of the oxidation state of radiogenic Pb in natural zircon using X-ray absorption near-edge structure

被引：12
|
作者：
Tanaka, Kazuya [1 ]
Takahashi, Yoshio [1 ]
Horie, Kenji [2 ]
Shimizu, Hiroshi [1 ]
Murakami, Takashi [3 ]
机构：
[1] Hiroshima Univ, Dept Earth & Planetary Syst Sci, Grad Sch Sci, Hiroshima 7398526, Japan
[2] Natl Inst Adv Ind Sci & Technol, Geol Survey Japan, AIST Tsukuba Cent 7, Tsukuba, Ibaraki 3058567, Japan
[3] Univ Tokyo, Dept Earth & Planetary Sci, Tokyo 1130033, Japan
来源：
PHYSICS AND CHEMISTRY OF MINERALS | 2010年 / 37卷 / 04期
基金：
日本学术振兴会;
关键词：
Oxidation state; Radiogenic Pb; XANES; Zircon; RADIATION-DAMAGE; LEAD; PHASE; XAFS;
D O I：
10.1007/s00269-009-0330-2
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We examined the L-III-edge Pb X-ray absorption near-edge structure (XANES) of three natural zircon samples with different amounts of radiation doses (1.9 x 10(15) to 6.8 x 10(15) alpha-decay events/mg). The results suggest that the oxidation state of radiogenic Pb in the zircon sample with the highest radiation dose is divalent. The XANES spectra of the two other samples with lower radiation doses suggest that radiogenic Pb(II) is present, and further that some Pb may be tetravalent. This is the first work on the determination of the oxidation state of radiogenic Pb in natural zircon using XANES.
引用
收藏
页码：249 / 254
页数：6
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