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蛍光X線分析法による宝石サンゴの炭酸塩骨格中における微量元素の分布の測定
http://hdl.handle.net/2297/25026
http://hdl.handle.net/2297/25026e5dbfa5a-36fa-4133-8da5-69b6d20fcdcb
名前 / ファイル | ライセンス | アクション |
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TE-PR-HASAGAWA-H-521.pdf (1.6 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-10-03 | |||||
タイトル | ||||||
タイトル | 蛍光X線分析法による宝石サンゴの炭酸塩骨格中における微量元素の分布の測定 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Distributions of trace elements in biogenic carbonate minerals of precious corals by X-ray fluorescence analysis | |||||
言語 | ||||||
言語 | jpn | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
長谷川, 浩
× 長谷川, 浩× 岩崎, 望× 鈴木, 淳× 牧, 輝弥× 早川, 慎二郎 |
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提供者所属 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 金沢大学理工研究域物質化学系 | |||||
書誌情報 |
分析化学 = Japan analyst 巻 59, 号 6, p. 521-530, 発行日 2010-01-01 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0525-1931 | |||||
NCID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN00222633 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.2116/bunsekikagaku.59.521 | |||||
出版者 | ||||||
出版者 | The Japan Society for Analytical Chemistry = 日本分析化学会 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | 宝石サンゴは日本が主要産出国である数少ない天然資源の一つである.本研究では,宝石サンゴの炭酸塩骨格に対して大型放射光施設SPring-8における放射光蛍光X線分析を適用して,微量元素の組成と二次元分布像を明らかにした.37.6 keV,50 μm角の励起X線を照射した点分析により,骨格中における主要元素のCa,Srに加えて,Ba,I,Mo,Sn,Mn,Zn,Cd,Brの10元素が検出された.マッピング分析においては,Ca及びSrは骨格全体にほぼ均一に分布するのに対して,Ba,I,Moは成長輪よりも微細な粒状構造を示すことが分かった.日本近海産アカサンゴ,地中海産ベニサンゴ,小笠原及びミッドウェイ産深海サンゴの骨格中に含まれる微量元素組成を比較した結果,Ba及びCdについては,各宝石サンゴの間で骨格中の濃度が異なる傾向が得られた.海水中におけるBa及びCdの濃度に応じて骨格中の成分組成が変化したと考えられる.これらの微量元素は,宝石サンゴの種や産地を同定する指標としての役割が期待される. Precious coral is one of the natural resources of which Japan is a major supplier. Since the concentrations of trace elements in the skeletons are less than 1 ppm, it is difficult to determine the behavior of trace elements other than Ca, Mg and Sr using conventional instruments for mapping analysis at a laboratory scale. In this study, the distributions of trace elements in the skeletons of precious corals were analysed with XRF mapping employing synchrotron radiation at a large circular accelerator in SPring-8. Using 37.6 keV X-rays with a beam size of 50 μm (horizontally) X 50 μam (vertically), Ba, I, Mo, Sn, Mn, Zn, Cd and Br, as well as the major element of Ca and Sr, were detected in the skeletons. Two-dimensional maps of the trace element distribution showed that those of Ba, I and Mo concentrations form fine granular structure in the skeletons of precious corals, while Ca and Sr are almost homogeneously distributed. As compared with the element composition in the skeletons of Corallium rubrum from the Mediterranean Sea, Corallium japonicum from Japanese waters, and deep sea corals from Ogasawara and Midway Islands, relatively high contents of Cd and Ba were detected in the deep corals, which suggested that Cd and Ba are incorporated in proportion to the concentrations in the surrounding seawater. These elements are expected to be good marker elements for identifying species and harvest areas. © 2010 The Japan Society for Analytical Chemistry. | |||||
権利 | ||||||
権利情報 | The Japan Society for Analytical Chemistry (c) 2010 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
関連URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | http://www.jsac.or.jp/index.html | |||||
関連URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | http://www.jstage.jst.go.jp/article/bunsekikagaku/59/6/59_521/_article/-char/ja |