Showing papers by "Dietrich Meier published in 1991"

Thermal degradation products of wood. Gas chromatographic separation and mass spectrometric characterization of polysaccharide derived products

Abstract: Thermal degradation products of woods arising at 450 degrees C have been separated by gas chromatography on a DB-1701 capillary column. GC retention times and mass spectral data of 104 polysaccharide derived pyrolysis products are tabulated. The elemental composition of 76 identified compounds are also presented. The mass spectra were obtained by electron impact ionization (EI). However, the molecular mass of all degradation products with Mw greater than 76 was determined by chemical ionization (CI) using iso-butane as reagent gas. The peak assignment was proved in 38 cases by mass spectrometry of authentic compounds and 32 degradation products were identified according to the literature. The spectral data are presented as a Mass Peak Index showing the intensity of the nine most abundant peaks.

Thermal degradation products of wood. A collection of electron-impact (EI) mass spectra of polysaccharide derived products

Abstract: On a degrade des echantillons de bois par pyrolyse analytique a 450 o C. Les produits de degradation ont ete separes par chromatographie gazeuse et les produits derives de polyosides ont ete caracterises par spectrometrie de masse avec impact electronique et ionisation chimique. On presente les spectres de masse obtenus