Stable isotope geochemistry of copper, based on the development of isotope analyses of micron-size areas

铜的稳定同位素地球化学，基于微米级区域同位素分析的发展

• 批准号: 20340156
• 负责人: NOTSU Kenji
• 金额: $ 12.23万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20340156/
• 关键词: プラズマイオン源質量分析; 銅同位体組成; 微小領域同位体分析; 高精度同位体分析; フェムト秒レーザー; 液中レーザーアブレーション法; 銅鉱物; 安定同位体地球化学; プラズマ質量分析法; 紫外線波長化; 局所同位体分析; 銅; 高空間分解能化; 液中レーザーアブレーション; 銅同位体; ICP質量分析; 質量差別効果; 鉱物一粒子分析; 物質循環モデル; 短パルス紫外線レーザー; 非古典的安定同位体地球化学; 微小領域分析; プラズマイオン源質量分析法 /

Precise determinations of ^<65>Cu/^<63>Cu have been performed using a multi-collector type mass spectrometer with plasma ion source since 1990's, showing that theδ^<65>Cu values in various natural samples vary from -16.3 to +10.0‰ relative to NIST-SRM976 standard sample. The ratios of minute mineral grains or fine particles have not been measured because of analytical difficulty. In this work, Cu isotope analyses with higher precision and with higher space resolution were realized by shortening the wavelength of the conventional Ti:S femto-second laser. The remodeling of the optical system enables more accurate laser ablation to the minute mineral targets. Furthermore, The laser ablation in solutions was applied to analyze super-fine particles with less than 10 μm. Copper isotope data of various natural samples were obtained using above-mentioned novel apparatus and analytical methods to construct stable isotope geochemistry of copper.

90<65><63>年代以来，用等离子体离子源多收集器质谱仪对δ ^ Cu/δ ^ Cu进行了精确测定，结果表明，<65>各种天然样品中δ^ Cu值相对于NIST-SRM 976标准样品的变化范围为-16.3 ‰ ~+10.0‰。由于分析上的困难，微小矿物颗粒或细颗粒的比例还没有被测量。通过缩短传统钛硫飞秒激光器的波长，实现了更高精度和更高空间分辨率的铜同位素分析。光学系统的改造使激光烧蚀更精确的微小矿物目标。此外，还将溶液中的激光烧蚀技术应用于小于10 μm的超细颗粒的分析。利用上述新仪器和分析方法获得了各种天然样品的铜同位素数据，构建了铜的稳定同位素地球化学。

项目成果

Development of NIR fs-Laser Ablation-ICPMS Technique for Chemical Analysis of Metallic Materials

用于金属材料化学分析的近红外飞秒激光烧蚀ICPMS技术的开发

• 发表时间: 2008
• 作者: Nakano;N.;et. al.;Takafumi Hirata
• 通讯作者: Takafumi Hirata

Development of in-situ determination of Cu isotope ratios in copper-rich materials by NIR femtosecond-LA-MC-ICP-MS.

开发利用近红外飞秒-LA-MC-ICP-MS 原位测定富铜材料中的铜同位素比。

• 发表时间: 2009
• 作者: Ikehata;K.;Notsu;K.;Hirata T.
• 通讯作者: Hirata T.

Elemental Analysis using Femtosecond Laser Ablation ICP Mass Spectrometry in Earth's Science

在地球科学中使用飞秒激光烧蚀 ICP 质谱进行元素分析

• 发表时间: 2008
• 作者: Sugita;S.;N.Nagata;N.Tsuboi;T.Hiroi;M.Okada;T. Hirata
• 通讯作者: T. Hirata

Dynamic Light Scattering Study of the Inhibiting Effect on Crystal Growth of Calcium Carbonate

• DOI: 10.1246/bcsj.20100228
• 发表时间: 2011-03-15
• 期刊: BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
• 影响因子: 4
• 作者: Kamiya, Natsumi;Tsunomori, Fumiaki;Notsu, Kenji
• 通讯作者: Notsu, Kenji

New Application of the femtosecons laser ablation technique for high-spatial resolution isotope geochemistry

飞秒激光烧蚀技术在高空间分辨率同位素地球化学中的新应用

• 发表时间: 2009
• 作者: Araoka;D.;Inoue;M.;Suzuki;A.;Yokoyama;Y.;Edwards;R.L.;Cheng;H.;Matsuzaki;H.;Kan;H.;Shikazono;N.;Kawahata;H.;T.Hirata
• 通讯作者: T.Hirata