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Updated: Jun 17, 2026

In Situ SIMS and IR Spectroscopy of Well-defined Surfaces Prepared by Soft Landing of Mass-selected Ions
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Published on: June 16, 2014

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关于固相天体化学的多尺度视角:实验室,计算和开放问题

Matthew D Dickers1, Duncan V Mifsud2, Nigel J Mason1,2

  • 1Physics and Astronomy, School of Engineering, Mathematics and Physics, University of Kent, Canterbury, CT2 7NH UK.

Space science reviews
|November 10, 2025
PubMed
概括

星际尘埃粒和冰层对冷分子云中的复杂分子形成至关重要. 实验室实验面临时间范围的限制,但计算模拟为了解冰地幔生长提供了解决方案.

关键词:
天体化学是天体化学.计算模拟的计算模拟.冰膜是一种冰膜.实验室方法 实验室方法多尺度建模的多尺度建模

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Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics10:52

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Atomic Absorption Spectroscopy: Atomization Methods01:25

Atomic Absorption Spectroscopy: Atomization Methods

Atomic Absorption Spectroscopy (AAS) atomizes samples through flame atomization or electrothermal atomization. Flame atomization typically involves a nebulizer and spray chamber assembly to combine the sample with a fuel–oxidant mixture, creating a fine aerosol mist that enters a burner. Typically, the fuel and oxidant are combined in an approximately stoichiometric ratio. However, for atoms that are easily oxidized, a fuel-rich mixture may be more advantageous. Only about 5% of the aerosol...
Atomic Absorption Spectroscopy: Lab01:21

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...