Pulping Catalysts in Trees
نویسندگان
چکیده
Several hardwood and softwood trees were analyzed for anthraquinone-type components. Wood samples were reduced to a small size and extracted with an organic solvent; the extracts were then concentrated and analyzed by gas chromatography-mass spectroscopy. Low levels of AQ and anthrone components were detected using a sensitive selected-ion monitoring technique. Ten out of seventeen hardwood samples examined contained AQ-type components; however, the levels were typically below -6 ppm. Such components were not observed for the few softwood samples that were examined. The AQs were more concentrated in the heartwood of teak than in the sapwood. Extraction of cottonwood with an organic solvent had little effect on the ease of pulping of the wood.
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