Issue 12, 1978

Analysis of petroporphyrins by chemical ionisation mass spectrometry

Abstract

The CH4 chemical ionisation (c.i.) mass spectra of three standard porphyrins and two petroporphyrin mixtures have been examined and compared with their respective electron impact (e.i.) mass spectra. In the e.i. mode (M– 15)+ fragments are observed, the isotope peaks of which coincide with homologue molecular ions. Much reduced fragmentation is observed in the c.i. mass spectra, resulting in an easier analysis of complex mixtures of petroporphyrins. This occurs with only a slight loss in sensitivity compared with low voltage e.i. or field desorption (f.d.) mass spectrometry.

Article information

Article type
Paper

J. Chem. Soc., Perkin Trans. 1, 1978, 1655-1659

Analysis of petroporphyrins by chemical ionisation mass spectrometry

G. J. Shaw, J. M. E. Quirke and G. Eglinton, J. Chem. Soc., Perkin Trans. 1, 1978, 1655 DOI: 10.1039/P19780001655

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Spotlight

Advertisements