Ammonium Adduct Ion in Ammonia Chemical Ionization Mass Spectrometry. Formation of Adduct Ion

The mechanism of formation of ammonium adduct ion, [M+NH4]+, observed in ammonia chemical ionization mass spectra, was examined by using a selected set of compounds. It was found that the adduct ion is formed preferentially when the proton affinity of the substrate molecule is close to that of ammon...

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Bibliographic Details
Published in:Journal of the Mass Spectrometry Society of Japan 1983, Vol.31(4), pp.275-279
Main Authors: Nakata, Hisao, Konishi, Hideyuki, Takeda, Naohito, Tatematsu, Akira, Suzuki, Makoto
Format: Article
Language:English
Subjects:
Ammonia chemical ionization mass spectrometry
Ammonium adduct ion
CIMS
Proton affinity
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Summary:The mechanism of formation of ammonium adduct ion, [M+NH4]+, observed in ammonia chemical ionization mass spectra, was examined by using a selected set of compounds. It was found that the adduct ion is formed preferentially when the proton affinity of the substrate molecule is close to that of ammonia.
ISSN:1340-8097
1880-4225
DOI:10.5702/massspec.31.275