Characterization of the adsorption characteristics and pore size distributions of such an adsorbent as activated carbon requires comparison of the same property index of two or more adsorbents in one figure. In this paper, an example to compare two activated carbon samples in the adsorption characteristics and pore size distribution is given to illustrate the method to apply Matlab to plot adsorption isotherms and pore size distribution figures. First, the data of the adsorption experiments are imported to Matlab. Then the adsorption isotherms and pore size distribution figures of the two samples can be plotted respectively at one figure window by running the "plot" function and "hold on" command. In addition, the plotted figures can be edited and annotated. This method is easy to learn, and the plotted figures can both be saved as dedicated graphics in Matlab for future use and be copied in common graphics format to the clipboard to be used by such word processing software as WORD.%针对在表征活性炭等吸附剂的吸附特性和孔径分布时,往往需要将2个以上吸附剂的同一种性能指标在一个图中进行比对的问题,探索了应用Matlab绘制活性炭吸附等温线和孔径分布曲线的方法.先将吸附实验数据导入Matlab中,然后调用Matlab的plot函数和hold on命令将2个活性炭样品的吸附等温线、孔径分布曲线分别绘制在一个图形窗口中.在绘图窗口中还可对所绘图形进行各种编辑和标注.该方法简单易学,所绘图形既能保存成专用的图形文件供Matlab调用,又能以通用的图形格式复制到剪贴板上供Word等文字处理软件使用.
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