desorption atmospheric pressure chemical ionization mass spectrometry

initialism: DAPCI
https://doi.org/10.1351/goldbook.09179
Measurement method in which a mass spectrometer is used to measure the ratio of mass to charge and the abundance of ionized entities emitted from a sample in air as a result of a nearby corona discharge in a humid carrier gas.
Notes:
  1. The carrier gas is usually nitrogen.
  2. Both positive and negative ions are observed with the mechanisms involving protonation through water molecules and ionization through the Penning process.
See also: plasma assisted desorption ionization, direct analysis in real time
Source:
PAC, 2020, 92, 1781. (Glossary of methods and terms used in surface chemical analysis (IUPAC Recommendations 2020)) on page 1785 [Terms] [Paper]
Citation: 'desorption atmospheric pressure chemical ionization mass spectrometry' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.09179 RIS BibTex EndNote
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