Studies in chemical ionization mass spectrometry: Aryl Ketones
β Scribed by J. Michnowicz; B. Munson
- Publisher
- John Wiley and Sons
- Year
- 1972
- Tongue
- English
- Weight
- 458 KB
- Volume
- 6
- Category
- Article
- ISSN
- 1076-5174
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π SIMILAR VOLUMES
CI mass spectra of the five isomeric vicinal d,-decanes have been recorded using methane and d,-methane as reagent gases. In contrast to earlier suggestions, we find that a large fraction of the alkyl fragment ions from n-decane are formed by elimination of olefins from the abundant [M -I ] ion. Onl
The hydrogen and isobutane chemical ionization mass spectra of a number of carotenoids, with symmetrical and unsymmetrical end groups, have been examined. Similar spectra were obtained with each gas. Loss of fragments, characteristic of both the polyene chain and of the end groups were shown by all
Both alkenes and cydoallrenes react with [CH&H21". The possibilities and Limitations of CI(CHm2) for the identification of structural isomers and for the determination of double bond positions are discussed. The quasi-molecular ions + CH&Hz]" are shown to fragment in a manner observed for amines und