関連する実験動画
Updated: Jul 22, 2026

11:27
Synthesis and Characterization of Functionalized Metal-organic Frameworks
Published on: September 5, 2014
要素の分割:溶融構造と組成の役割
M W Schmidt1, J A D Connolly, D Günther
1Institut für Mineralogie und Petrologie, Department of Earth Sciences, Eidgenössische Technische Hochschule (ETH), 8092 Zürich, Switzerland. max.schmidt@erdw.ethz.ch
まとめ
高圧実験では,融解構造が,同時に存在するガブロイクや花岩の融解の間の微量元素分割に著しく影響していることが示されています. この発見は,マグマの進化と地球上の元素の分布を理解するために極めて重要です.
科学分野:
- 地質化学 地質化学
- ペトロロジー・ペトロロジーとは
- 実験的ペトロロジーは,実験的なペトロロジーです.
背景:
- 結晶と溶融の間の微量元素の分割は,マグマの分化と火性岩の形成を理解するために不可欠です.
- 溶融構造は,組成,圧力,温度によって影響を受け,元素の振る舞いの重要な要因としてますます認識されています.
研究 の 目的:
- 溶融構造が,共存するガブロイク溶融と花岩溶融の間の微量元素分割に及ぼす影響を実験的に決定する.
- 結晶/融解分割係数に対する融解構造の寄与を定量化するために.
- 要素の特性 (例えば,フィールド強度) とそれらの分割行動の関係を調べる.
主な方法:
- 高圧,高温遠心分離による,同時に存在するガブロイクと花岩の溶融の分離.
- レーザーアブレーション誘導結合プラズマ質量スペクトロメトリ (LA-ICP-MS) を用いて分離された溶液における微量元素組成物の分析.
- 観察された分割効果を予測するために,正規溶液モデルの適用.
主要な成果:
- 融解の構造は,結晶/融解分割係数の約1次元の変動を説明する.
- アルカリとアルカリ性土元素の分割は,それらのフィールド強度に強く依存しています.
- 特定の元素群 (アンフォテリック,単一の電子対,希土,移行,高場強度) は,溶融ポリメリゼーションと調整によって制御される明確な分割偏好を示す.
結論:
- 融解構造は微量元素の分割を支配する支配的なコントロールであり,マグマの進化モデルに大きな影響を与える.
- 観測された分割傾向は,正規解モデルを使用して予測することができ,熱力学的アプローチの重要性を強調します.
- この研究は,複雑な磁気系における微量元素の行動に関する重要な洞察を提供します.
関連する概念動画
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Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
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