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Updated: Jul 12, 2026

Direct Analysis of Single Cells by Mass Spectrometry at Atmospheric Pressure
Published on: September 4, 2010
Application of two-step laser mass spectrometry to cosmogeochemistry: direct analysis of meteorites
Abstract:
Polycyclic aromatic hydrocarbons in C1, C2, and C3 carbonaceous chondrites and in some ordinary chondrites have been directly analyzed by two-step laser desorption/ laser multiphoton ionization mass spectrometry, a selective and sensitive method requiring only milligram samples. At the ionization wavelength of 266 nanometers, parent ion peaks of polycyclic aromatic hydrocarbons dominate the mass spectra. Quantitative analysis is possible; as an example, the concentration of phenanthrene in the Murchison meteorite was determined to be 5.0 parts per million.
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