【摘要】 本研究从三种有机物料草炭、褐煤、风化煤中提取腐殖酸,对其组成和性质进行了测定,同时对胡敏酸进行酒精沉淀分级。研究结果表明:褐煤胡敏酸氧化度和芳香度最高,其次为风化煤胡敏酸,最后是草炭胡敏酸;风化煤富里酸的氧化度和芳香度最高,其次为褐煤富里酸和草炭富里酸。胡敏酸各级分的回收率均随着级分数的升高而增加。回收率以风化煤胡敏酸最高,依次为褐煤胡敏酸、草炭胡敏酸。更多还原

【Abstract】 The experiment includes the study on the composition and character of three humic substances that were extracted from peat,lignite and weathering coal.The humic acids were fractionated by alcohol into ten fractions and then we measured the rate of recovery of all fractions.The results showed that the oxidation degree and aromatic degree of lignite HA was highest,successively with weathering of coal and peat.The oxidation degree and aromatic degree of weathering coal FA was highest,followed by lignite FA and peat FA.The rate of recovery of HA fractions increased as fractionaton proceeded.The recovery rase of all fractions of weathering coal was highest.更多还原