用卟啉化合物作为显色剂,进行痕量铜的光度测定已有很多报导。但用 meso—四—(对羟基苯)卟啉作显色剂的报导还不多。我们用自己合成的 meso—四—(对羟基苯)卟啉(T—4-HPP),在阴离子表面活性剂(十二烷基硫酸钠)存在下,对铜离子显色反应的条件作了研究。摩尔吸光系数为3.3×10~5。大多数卟啉试剂与铜离子生成的络合物,与试剂的最大吸收峰重合。有的采用显色后再酸化的方法,使试剂的吸收红 Porphyrin compounds as a developer, for the determination of trace copper photometry has been reported. However, meso-tetra- (p-hydroxybenzene) porphyrin as a developer is not reported. We used the self-synthesized meso-tetra (p-hydroxybenzene) porphyrin (T-4-HPP) in the presence of an anionic surfactant (sodium dodecyl sulfate) the study. Molar absorption coefficient of 3.3 × 10 ~ 5. Most complexes of porphyrin reagents with copper ions, coincide with the maximum absorption peak of the reagent. Some use of acid after the color of the method, so that the absorption of red reagents