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Two membrane inlet mass spectrometric (MIMS) methods for determining phenolic compounds in water are described and compared, namely direct analysis and analysis after acetylation of the phenolic compounds. Direct analysis of phenolic compounds in water is a very simple and rapid method and detection limits are relatively low (from 30 μg l -1 for phenol to 1000 μg l -1 for...
The tetrasaccharide 2 -O-(4-O-methyl-β-l-idopyranosyluronic acid)xylotriose was isolated from enzymatically hydrolysed, unbleached, birch kraft pulp by anion-exchange chromatography in two steps. The primary structure of the tetrasaccharide was determined by 1 H and 13 C NMR spectroscopy, using homonuclear and heteronuclear two-dimensional techniques. NOE data and 3 ...
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