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本文研究了非水溶性α.β.γ.δ-四(2-氯苯基)卟啉[简称T-(2-Cl)PP]与钯(Ⅱ)的显色反应。经试验表明,在pH4_δ2的HAc-NaAc缓冲溶液中,加入适当的表面活性剂和辅助络合剂,于60℃,钯(Ⅱ)与T-2-Cl)PP生成红色络合物,最大吸收峰位于410nm处,表观摩尔吸光系数为4.1×10~6,在0～1.2μg/25ml范围内符合朗伯-比耳定律。干扰离子通过疏基棉分离。用此法测定了钯催化剂及人工合成样品中的钯,结果令人满意。
In this paper, the color reaction of water-insoluble α.β.γ.δ-tetrakis (2-chlorophenyl) porphyrin [abbreviated as T- (2-Cl) PP] with palladium (II) The results showed that adding a suitable surfactant and auxiliary complexing agent to pH4_δ2 HAc-NaAc buffer solution resulted in the formation of red complex with palladium (Ⅱ) and T-2-Cl) PP at 60 ℃, and the maximum absorption Peak at 410nm, the apparent molar absorptivity of 4.1 × 10 ~ 6, in the range of 0 ~ 1.2μg / 25ml in line with Lambert - Beer’s law. Interfering ions are separated by sparse cotton. Palladium catalysts and Pd in synthetic samples were determined by this method and the results were satisfactory.