木素结构的探索和工业应用的研究是当代木材化学科研工作的重要课题。这些工作都和木素分子量及分子量分布密切相关。然而,在一般测定高聚物分子量及分子量分布的方法中,超离心法是曾被认为应用于木素分子量及分子量分布测定最成功的方法,但其最好的结果也还不足于推算出木素分子量分布的具体数据。用凝胶渗透色谱法(简称GPC)测定木素分子量及分子量分布是六十年代发展起 The exploration of lignin structure and the research of industrial application are the important topics of contemporary wood chemistry research. These are all closely related to the molecular weight and molecular weight distribution of lignin. However, ultracentrifugation is one of the most successful methods used to determine the molecular weight and molecular weight distribution of lignin in general methods of determining the molecular weight and molecular weight distribution of polymers. However, the best results are not enough to predict Specific molecular weight distribution of the data. Determination of lignin molecular weight and molecular weight distribution by gel permeation chromatography (GPC) was developed in the 1960s