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本文研究了在混合表面活性剂SDBS和聚乙二醇辛基苯基醚(OP)共存下,meso-四(3-溴—4-羟基—5-甲氧基苯)卟啉T(BHMOP)P与钯的显色反应.并以该反应为基础建立了高灵敏度的痕量钯的光度分析法.钯与该显色剂形成1:2的配合物,其表观摩尔吸光系数在422nm处为1.27×10~5L·mol~(-1)·cm~(-1).钯量在0.0-12μg/25ml范周内服从比尔定律.本法用于合成样品中钯的测定,结果满意.
In this paper, meso-tetrakis (3-bromo-4-hydroxy-5-methoxyphenyl) porphyrin T (BHMOP) was studied in the presence of mixed surfactant SDBS and polyethylene glycol octylphenyl ether (OP) P color reaction with palladium.And based on the reaction, a high sensitivity spectrophotometric method for the determination of trace palladium was established.Palladium and the chromogenic agent formed a 1: 2 complex with an apparent molar absorptivity of 422 nm Was 1.27 × 10-5L · mol -1 · cm -1 .The Beer’s law was obeyed in the range of 0.0-12μg / 25ml of palladium.The method was applied to the determination of palladium in synthetic samples with satisfactory results.