Analysis of Cation Composition in Dolomites on the Intact Particles Sampled from Asteroid Ryugu
文献类型：期刊论文
| 作者 | Morita, Mayu42; Yui, Hiroharu43; Urashima, Shu-hei43; Onose, Morihiko42; Komatani, Shintaro42; Nakai, Izumi44; Abe, Yoshinari45; Terada, Yasuko46; Homma, Hisashi47; Motomura, Kazuko29 |
| 刊名 | ANALYTICAL CHEMISTRY
 |
| 出版日期 | 2023-12-29 |
| 卷号 | 96期号:1页码:170-178 |
| ISSN号 | 0003-2700 |
| DOI | 10.1021/acs.analchem.3c03463 |
| 英文摘要 | Characterization of the elemental distribution of samples with rough surfaces has been strongly desired for the analysis of various natural and artificial materials. Particularly for pristine and rare analytes with micrometer sizes embedded on specimen surfaces, non-invasive and matrix effect-free analysis is required without surface polishing treatment. To satisfy these requirements, we proposed a new method employing the sequential combination of two imaging modalities, i.e., microenergy-dispersive X-ray fluorescence (micro-XRF) and Raman micro-spectroscopy. The applicability of the developed method is tested by the quantitative analysis of cation composition in micrometer-sized carbonate grains on the surfaces of intact particles sampled directly from the asteroid Ryugu. The first step of micro-XRF imaging enabled a quick search for the sparsely scattered and micrometer-sized carbonates by the codistributions of Ca2+ and Mn2+ on the Mg2+- and Fe2+-rich phyllosilicate matrix. The following step of Raman micro-spectroscopy probed the carbonate grains and analyzed their cation composition (Ca2+, Mg2+, and Fe2+ + Mn2+) in a matrix effect-free manner via the systematic Raman shifts of the lattice modes. The carbonates were basically assigned to ferroan dolomite bearing a considerable amount of Fe2+ + Mn2+ at around 10 atom %. These results are in good accordance with the assignments reported by scanning electron microscopy-energy-dispersive X-ray spectroscopy, where the thin-sectioned and surface-polished Ryugu particles were applicable. The proposed method requires neither sectioning nor surface polishing; hence, it can be applied to the remote sensing apparatus on spacecrafts and planetary rovers. Furthermore, the non-invasive and matrix effect-free characterization will provide a reliable analytical tool for quantitative analysis of the elemental distribution on the samples with surface roughness and chemical heterogeneity at a micrometer scale, such as art paintings, traditional crafts with decorated shapes, as well as sands and rocks with complex morphologies in nature. |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:001139548100001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/76082]  |
| 专题 | 中国科学院广州地球化学研究所 |
| 通讯作者 | Yui, Hiroharu |
| 作者单位 | 1.Osaka Univ, Dept Earth & Space Sci, Osaka 5600043, Japan 2.Kyoto Univ, Div Earth & Planetary Sci, Kyoto 6068502, Japan 3.Univ Tokyo, Dept Earth & Planetary Sci, Tokyo 1130033, Japan 4.Max Planck Inst Chem, D-55128 Mainz, Germany 5.Nagoya Univ, Dept Earth & Planetary Sci, Nagoya 4648601, Japan 6.Univ Tokyo, Dept Gen Syst Studies, Tokyo 1530041, Japan 7.Inst Space & Astronaut Sci ISAS, Japan Aerosp Explorat Agcy JAXA, Sagamihara, Kanagawa 2525210, Japan 8.Ibaraki Univ, Fac Sci, Mito 3108512, Japan 9.Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA 10.Univ Chicago, Dept Geophys Sci, Chicago, IL 60637 USA |
| 推荐引用方式 GB/T 7714 | Morita, Mayu,Yui, Hiroharu,Urashima, Shu-hei,et al. Analysis of Cation Composition in Dolomites on the Intact Particles Sampled from Asteroid Ryugu[J]. ANALYTICAL CHEMISTRY,2023,96(1):170-178. |
| APA | Morita, Mayu.,Yui, Hiroharu.,Urashima, Shu-hei.,Onose, Morihiko.,Komatani, Shintaro.,...&Yurimoto, Hisayoshi.(2023).Analysis of Cation Composition in Dolomites on the Intact Particles Sampled from Asteroid Ryugu.ANALYTICAL CHEMISTRY,96(1),170-178. |
| MLA | Morita, Mayu,et al."Analysis of Cation Composition in Dolomites on the Intact Particles Sampled from Asteroid Ryugu".ANALYTICAL CHEMISTRY 96.1(2023):170-178. |
入库方式： OAI收割
来源：广州地球化学研究所
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