関連する実験動画
Updated: Jun 10, 2026

08:14
Atom Probe Tomography Analysis of Exsolved Mineral Phases
Published on: October 25, 2019
月のアパタイトは,陸上の揮発性物質が豊富に存在する.
Jeremy W Boyce1, Yang Liu, George R Rossman
1Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California 91125-2500, USA. jwboyce@alum.mit.edu
Nature
|July 24, 2010
まとめ
月面岩,特にベースアルト14053は,アパタイトで驚くべき量の水素 (H),塩素 (Cl),および硫黄 (S) を含んでいます. これらの発見は,月がこれまで考えられていたよりも揮発性物質に富んでいる可能性があることを示唆しています.
科学分野:
- 地質化学 地質化学
- 月科学 月科学 月科学
- 惑星科学 惑星科学
背景:
- 月は,地球と比較して,一般的に揮発性元素が枯渇していると考えられています.
- 月面の爆発的な火山活動の証拠は,いくつかのマグマがCOに富んだ蒸気相を溶かすことを示唆しています.
- 以前の研究では,月の岩石に原産水素 (H) があるという明確な証拠がありませんでした.
研究 の 目的:
- 月面玄武岩14053.3の末期アパタイトの揮発性含有量を調査する.
- 揮発性物質の濃度を,地上の岩石の岩石と比較する.
- 月面の揮発性物質の在庫とマントルの組成に及ぼす影響を評価する.
主な方法:
- 定量的なイオンマイクロプローブ測定は,月の玄武岩14053.3からのアパタイトサンプルで実施されました.
- 水素 (H),塩素 (Cl),硫黄 (S) の濃度が分析されました.
- アパタイト形成モデル (変形性および火性) を検討した.
主要な成果:
- 月面ベースルト14053のアパタイトは,地上のアパタイトと比べられるH,Cl,S濃度を示している.
- 揮発性物質の含有量は,マグマ後添加または揮発性物質に富んだ溶融から結晶化 (約. 1600ppmのH2O,3500ppmのCl) となっている.
- メタモルフィックモデルとイグネウスモデルの両方が,一部の月面物質の有意な揮発性在庫をサポートしています.
結論:
- 月の特定の材料は,地上の岩石に似た揮発性の在庫を持っています.
- これは,月が普遍的に揮発性物質で枯渇しているという概念に異議を唱える.
- 月面のマントルや地殻の一部は,これまで考えられていたよりも,揮発性物質が豊富である可能性があります.
さらに関連する動画
関連する概念動画
Conditions on Early Earth
Around 4 billion years ago, oceans began to condense on earth while volcanic eruptions released nitrogen, carbon dioxide, methane, ammonia, and hydrogen into the primordial atmosphere. However, organisms with the characteristics of life were not initially present on earth. Scientists have used experimentation to determine how organisms evolved that could grow, reproduce, and maintain an internal environment.
Conditions on Early Earth
Around 4 billion years ago, oceans began to condense on earth while volcanic eruptions released nitrogen, carbon dioxide, methane, ammonia, and hydrogen into the primordial atmosphere. However, organisms with the characteristics of life were not initially present on earth. Scientists have used experimentation to determine how organisms evolved that could grow, reproduce, and maintain an internal environment.
Volatilization
Volatilization gravimetry is an analytical technique that measures the mass lost due to the volatilization of the substance. This technique is used to estimate the amount of volatile material in a sample. To perform this method, heat a known amount of the sample to a high temperature in a crucible or other suitable vessel. The volatile substance in the sample evaporates, and the vapor is completely expelled from the crucible either by heating the sample or bubbling a stream of inert gas through...
Gravitation
In the years before Newton, a general belief prevailed that different laws governed objects in the sky than objects on Earth. When Kepler wrote down the three laws of planetary motion, explaining in detail the geometrical properties of the planetary orbits around the Sun, there was no immediate idea to discern their connection with more fundamental laws. It was Isaac Newton who, in 1665–66, figured out the connection between planetary motion, the motion of the moon around the Earth, and the...
Gravity between Spherical Bodies
Newton's law of gravitation describes the gravitational force between any two point masses. However, for extended spherical objects like the Earth, the Moon, and other planets, the law holds with an assumption that masses of spherical objects are concentrated at their respective centers.
This assumption can be proved easily by showing that the expression for gravitational potential energy between a hollow sphere of mass (M) and a point mass (m) is the same as it would be for a pair of extended...
This assumption can be proved easily by showing that the expression for gravitational potential energy between a hollow sphere of mass (M) and a point mass (m) is the same as it would be for a pair of extended...
Atomic Absorption Spectroscopy: Lab
For AAS measurements, samples must be introduced as clear solutions, often requiring extensive preliminary treatment to dissolve materials like soils, animal tissues, and minerals. Common methods for sample preparation include treatment with hot mineral acids, wet ashing, combustion in closed containers, high-temperature ashing, or fusion with reagents.
Solutions containing organic solvents, such as low-molecular-mass alcohols, esters, or ketones, enhance absorbances by increasing nebulizer...
Solutions containing organic solvents, such as low-molecular-mass alcohols, esters, or ketones, enhance absorbances by increasing nebulizer...

