Investigation of antioxidants and UV stabilizers from plastics. Part I: Comparison of HPLC and SFC; preliminary SFC/MS study
✍ Scribed by Arpino, P. J. ;Dilettato, D. ;Nguyen, Khoa ;Bruchet, A.
- Publisher
- John Wiley and Sons
- Year
- 1990
- Tongue
- English
- Weight
- 539 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0935-6304
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✦ Synopsis
Abstract
Synthetic mixtures of additives (antioxidants, UV stabilizers) used in the manufacture of food packaging materials were separated by normal phase HPLC under isocratic or gradient elution, and by capillary SFC using CO~2~ as mobile phase. SFC proved to be more efficient for the separation and determination of additives with a wide range of boiling points and for substances lacking a UV chromophoric moiety. Combined SFC/MS, using a direct coupling interface, produced clear charge transfer spectra resembling EI spectra and proton exchange CI spectra when ammonia was added to the ion source.