【摘要】 本文采用笔者新近合成的新有机试剂2-(5-溴-2-噻唑偶氮)-5-二乙氨基苯酚(5-Br-TADAP)作显色剂,在表面活性剂OP存在下,与痕量铜(Ⅱ),钴(Ⅱ)、镍(Ⅱ)在最佳条件下形成有色三元胶束增溶配合物。用CPA-矩阵法和共轭梯度法(CG)同时计算分光光度测定三组分含量,前者取得了满意的结果。对两种计算方法进行了比较和讨论。在处理吸收光谱相似的多组分体系时,从所测结果的准确度和精密度看。CPA优于CG。更多还原

【Abstract】 2-(5-Bromo-2-thiazolylazo)-5-diethylaminophenol(5-Br-TADAP), a new chromogenic reagent recently sythesized by the authors, is able to form a colored ternary micelle-solubilizing complex under optimum conditions with traces of copper (Ⅱ), cobalt (Ⅱ) and nickel (Ⅱ) in the presence of surfactant OP. Satisfactory results have been achieved in applying CPAmatrix method and conjugate gradient method (CG) to simultaneous computation-spectrophotometric determination of the contents of three components. Comparison and discussion between two computation methods are made. And it is shown, based on the accuracy and the precision of the results obtained, that CPA is superior to CG in processing of the multi component systems with similar absorption spectra.更多还原