Photoproducts resulting from illumination of a pyrene-chloroform solution using several light sources (sunlight, lamp, a pulsed laser) were analyzed by using gas chromatography (GC) and GC-mass spectrometry. The main photoproducts in chloroform were chloropyrene and pyrenecarboxaldehydes, and their
Gas chromatography and gas chromatography/mass spectrometry for the characterization of complex mixtures of large oligosaccharides
β Scribed by Karlsson, H. ;Hansson, G. C.
- Publisher
- John Wiley and Sons
- Year
- 1988
- Tongue
- English
- Weight
- 385 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0935-6304
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β¦ Synopsis
High temperature gas chromatography and gas chromatography/mass spectrometry are used in the characterization of complex natural mixtures of permethylated oligosaccharides released from proteins or lipids. The high resolution allows separation of isomeric compounds and the mass range extends to oligosaccharides around molecular mass 2000 daltons or 10 sugar residues for isomalto-oligosaccharides. The mass spectra of permethylated oligosaccharide alditols from mucin glycopeptides are very informative and the approach allows a simple and rapid characterization of these complex components.
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