- 著者
- Takano Shotaro Tanimizu Masaharu Hirata Takafumi Sohrin Yoshiki
- 出版者
- Nature Publishing Group
- 雑誌
- Nature communications (ISSN:20411723)
- 巻号頁・発行日
- vol.5, 2014-12-05
- 被引用文献数
- 89
海洋における銅同位体比の分布を高精度で解明 -重金属元素の同位体比が海洋大循環を辿る指標になる可能性を示唆-. 京都大学プレスリリース. 2014-12-08.
1 0 0 0 OA Evaluation of UV-fs-LA-MC-ICP-MS for Precise in situ Copper Isotopic Microanalysis of Cubanite
- 著者
- IKEHATA Kei HIRATA Takafumi
- 出版者
- The Japan Society for Analytical Chemistry
- 雑誌
- Analytical sciences (ISSN:09106340)
- 巻号頁・発行日
- vol.29, no.12, pp.1213-1217, 2013-12
- 被引用文献数
- 19
We evaluated the capabilities of an in situ method for measuring copper isotopes of cubanite using UV-fs-LA-MC-ICP-MS. A comparison of the UV-fs laser results with those obtained from the NIR-fs laser system shows that there is obviously an improvement in the precision (<0.10‰, 2SE) when using the UV-fs laser. In both wavelength modes, matrix-matched standards are required for reliable in situ copper isotope analysis of cubanite. This method was applied to determinations for copper isotopes of minute cubanite grains in a skarn ore. Copper isotopic ratios of cubanite grains near a weathered surface of the sample are lower than those of intact cubanite grains within the sample, suggesting that selective leaching of heavier copper isotope in primary minerals occurred during weathering.