Negative ion mass spectra of dicarboxylic acids
β Scribed by Akihiko Ito; Kozo Matsumoto; Tsugio Takeuchi
- Publisher
- John Wiley and Sons
- Year
- 1973
- Tongue
- English
- Weight
- 251 KB
- Volume
- 7
- Category
- Article
- ISSN
- 1076-5174
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π SIMILAR VOLUMES
Negative ion chemical ionization (CI-) mass spectra of the commonly occurring amino acids are simple and give information regarding molecular weight by the presence of [M + Cll-adduct in the case of simple amino acids and [M -win the case of amino acids containing additional polar group. tert-Butylo
## Abstract The fragmentation behaviour of a series of six avermectins and two of their derivatives has been studied in the negativeβion mode in the presence of ammonia. In contrast with positiveβion mass spectra the negativeβion spectra show abundant ions in the high mass region. Molecular mass de