Analytical Chemistry

Structural analysis of tetrapyrroles by hydrogen chemical ionization mass spectrometry

GJ Shaw, G Eglinton, JME Quirke

文献索引：Shaw, George J.; Eglinton, Geoffrey; Quirke, J. Martin E. Analytical Chemistry, 1981 , vol. 53, # 13 p. 2014 - 2020

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被引用次数: 24

摘要

The H2 chemical ionizatlon mass spectra of several standard porphyrins have been determined. Fragmentation proceeds via hydrogenation yielding porphyrlnogens, followed by cleavage at the meso (brldge) positions to produce mono-, dC, and trlpyrrollc Ions. Secondary fragmentation by cleavage of substituent groups attached to the pyrrole rings may then occur. Identiflcatlon of these fragments and the correspondlng molecular ions ...