Desorption Atmospheric Pressure Photoionization
Desorption atmospheric pressure photoionization (DAPPI) enables direct analysis of samples deposited on surfaces by means of a jet of hot solvent vapour and ultraviolet light. The hot jet thermally desorbs the sample from a surface and the vaporized sample is ionized by a vacuum ultraviolet light and consequently sampled into a mass spectrometer.
Read more about this topic: Ambient Ionization
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