【摘要】 本文研究了以四（4磺基苯）卟啉（简称TPPS₄）为显色剂,双峰双波长吸光光度同时测定微量Pb（Ⅱ）、Cd（Ⅱ）的方法。在适量辅助配合剂咪唑（简称1mid）存在下,Pb（Ⅱ）、Cd（Ⅱ）在室温下即可同时与TPPS₄迅速地发生灵敏的显色反应。采用计算机处理实验数据,可迅速得到两组分的浓度。本法不但可显著地提高测定灵敏度,而且能较好地提高方法的选择性。更多还原

【Abstract】 A new multiwavelength spectrophotometric method is developed for the simultaneous deter mination of two mutual interfering components lead and cadmium. The complexes can be for med quickly with tetrakis (4-sulfophenyl) por phyrin (TPPS) at room temperature in the presence of imidazole.A computer program is given. The recovery shows that relative error of the results odtained is within ±10%. The method has been applied to determine simultaneously microa mounts of lead and cadmium in some reference samples and the results are consistent with the given values.更多还原