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 laser ablation and electrospray ionization.
Notes: - The laser wavelength is usually in the infrared region.
- Both positive and negative ions are observed with the mechanisms involving protonation through water molecules and ionization through the Penning process.
See also: electrospray laser desorption ionization mass spectrometry, matrix-assisted laser desorption electrospray ionization, desorption atmospheric pressure photoionization, desorption electrospray ionization, extractive electrospray ionization
Source:
PAC, 2020, 92, 1781. 'Glossary of methods and terms used in surface chemical analysis (IUPAC Recommendations 2020)' on page 1787 (https://doi.org/10.1515/pac-2019-0404)