用流动色谱法测定小表面积时,会出现反常峰,给准确测定带来困难。本文根据文献报导的材料,分析了反常峰产生的原因,着重改进了仪器的稳压、混气和试管的结构。在测定比表面积为0.05米~2/克的试样时,不出现反常峰,得到了准确的结果。 Anomalous peaks can occur when small surface areas are determined by flow chromatography, which can make accurate measurements difficult. Based on the materials reported in the literature, this paper analyzes the causes of the anomalous peaks and focuses on the improvement of the instrument’s voltage regulation, air mixing and the structure of the test tube. In the determination of the specific surface area of ​​0.05 m ~ 2 / g of the sample, the anomalous peak does not appear, get accurate results.