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Updated: May 15, 2025

Visualization of Ambient Mass Spectrometry with the Use of Schlieren Photography
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使用新的可视化方法,实时大气粒子采样和光谱化学技术,揭示枪支残留物流和沉积机制

Thomas D Ledergerber1, Matthew Staymates2, Kourtney A Dalzell3

  • 1West Virginia University, Department of Chemistry, Morgantown, WV 26506, USA. tatiana.trejos@mail.wvu.edu.

Analytical methods : advancing methods and applications
|April 7, 2025
PubMed
概括

这项研究通过使用一种新的多传感器方法,提高了对枪支残留物 (GSR) 沉积和转移的理解. 这些发现改善了对枪支放电和空气中的颗粒物暴露的法医分析.

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Combustion Chemistry of Fuels: Quantitative Speciation Data Obtained from an Atmospheric High-temperature Flow Reactor with Coupled Molecular-beam Mass Spectrometer

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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...
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