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Ion formation by [Li] + ion attachment in high electric fields
Author(s) -
Giessmann U.,
Röllgen F. W.
Publication year - 1976
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210111010
Subject(s) - tungsten , ion , lithium (medication) , mass spectrum , ionization , molecule , chemistry , thermal ionization , electric field , spectral line , mass spectrometry , chemical ionization , field desorption , ion source , analytical chemistry (journal) , salt (chemistry) , atomic physics , electron ionization , physics , organic chemistry , medicine , chromatography , quantum mechanics , astronomy , endocrinology
An improved method for ionization by [Li] + ion attachment in high electric fields is described in which gaseous molecules collide with a tungsten wire covered with a lithium salt. The simple mass spectra of a number of compounds which exhibit only [ n M + Li]+ ions demonstrate the particular advantage of this ionization method. So far, additional peaks resulting from reactions of the molecules with the salt on the emitter surface have been found only in the mass spectra of acids.