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Characterization of chlorins within a natural chlorin mixture using electrospray/ion trap mass spectrometry

✍ Scribed by Xavier Fr. D. Chillier; Gary J. Van Berkel; Fazil O. Gülaçar; Armand Buchs

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
521 KB
Volume
29
Category
Article
ISSN
1076-5174

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✦ Synopsis

Chlorins in a sedimentary mixture were characterized, without prior isolation of individual components, using electrospray ionization combined with ion trap mass spectrometry. Collision-induced dissociation in the atmospheric sampling interface and multi-step mass spectrometry (i.e. MS" where n 2) were used in order to obtain structural information about the macrocycle. Fragmentation pathways are proposed for different macrocycle types based on data from model chlorins. Three unknown chlorins (RMM = 888, 844 and 790) are assigned as having bacteriochlorophyll macrocycle types esterified to unusual side-chains (i.e. dihydrophytol for the unknown with a bacteriopheophorbide a structure, phytol and an alcohol with a molecular mass of 242 u for the two unknowns with a proposed bacteriopyropheophorbide d structure).

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