射干为鸢尾科植物射干Belamcandachinensis(L.)DC.的干燥根茎,具清热解毒、消痰、利咽之功效;鸢尾为鸢尾科植物鸢尾Iris tectorum Maxim的干燥根茎,功主消积、破瘀、行水、解毒,与射干不同,但因鸢尾的性状与射干极为相似,故而常被混淆为射干入药。笔者结合工作需要,对射干和鸢尾的紫外吸收光谱做了对比实验,现报告如下。 The dry stem is a dry root of the dry plant of Brassica chinensis (L.) DC, which has the functions of clearing away heat and toxic substances, dispelling phlegm, and diuresis; and the iris is the dry root of the iris Iris tectorum Maxim of the iris family. Water treatment and detoxification are different from those used for eclipses. However, because the characteristics of appendix are very similar to those of effervescence, it is often confused with epinephrine injection. According to the needs of the work, the author did a comparative experiment on the UV absorption spectrum of the stem and the iris. The report is as follows.