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本文提出了在表面活性剂存在下，以非水溶性卟啉──α，β，γ，δ—四苯基卟啉（简称ＴＰＰ）作为显色剂测定钯（Ⅱ）的方法，并研究了体系的最佳显色条件，确定了ＴＰＰ与钯（Ⅱ）的 络合组成比。同时，对３１种金属离子及１２种盐的干扰情况做了研究。在这基础上制定了分光光度 法测定微量钯的方法，灵敏度高（摩尔吸光系数可达１．７×１０５），操作简便．
This paper presents a method for the determination of palladium (Ⅱ) with non-water-soluble porphyrin ──α, β, γ, δ-tetraphenylporphyrin (referred to as TPP) as chromogenic agent in the presence of a surfactant. System, the best color conditions to determine the TPP and palladium (Ⅱ) complex composition ratio. At the same time, the interference of 31 kinds of metal ions and 12 kinds of salt was studied. On this basis, the method of spectrophotometric determination of trace palladium has been developed. The method has high sensitivity (molar absorption coefficient up to 1.7 × 105) and is easy to operate.