## Abstract The fragmentation behaviour of a series of six avermectins and two of their derivatives has been studied in the negativeโion mode in the presence of ammonia. In contrast with positiveโion mass spectra the negativeโion spectra show abundant ions in the high mass region. Molecular mass de
Positive and negative ion mass spectra of oxygen, sulphur and selenium 2,1,3-benzodiazoles
โ Scribed by Mohammed R. Arshadi
- Publisher
- John Wiley and Sons
- Year
- 1978
- Tongue
- English
- Weight
- 240 KB
- Volume
- 13
- Category
- Article
- ISSN
- 1076-5174
No coin nor oath required. For personal study only.
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## Abstract 70 eV positive and negative ion mass spectra of a series of copper(II) Schiff base complexes have been obtained consecutively under the same ion source conditions. The characteristic feature of the negative ion spectra is their extreme simplicity relative to the corresponding positive i