采用紫外－可见光检测器和自编吸收光谱分析程序对色谱峰在１９５～７００ｎｍ波长范围内进行扫描，得到样品和标准品的吸收光谱图，通过对二者进行比较来鉴定色谱峰纯度，操作简便，具有一定的实用价值。 UV-VIS detector and self-designed absorption spectrum analysis program were used to scan the peak in the wavelength range of 195 ~ 700nm. The absorption spectrum of the sample and the standard was obtained. The purity of the chromatographic peak was confirmed by comparing the two. , Has a certain practical value.