有关双波长分光光度法的知识介绍和研究报告已有专文评述。导数分光光度法在国内虽屡有介绍,但实际应用仅见一篇摘要。本文用二(十二)烷基二硫代乙二酰二胺(DDO)作显色剂,用双波长法消除铂的干扰测定钯,用四阶导数分光光度法消除钯的干扰测定铂,达到不经分离同时测定铂、钯的目的。 Knowledge about the dual-wavelength spectrophotometry introduction and research reports have articles review. Derivative spectrophotometry in the country, although often introduced, but only a summary of the actual application. In this paper, bis (dodecyl) dithioethanediamine (DDO) was used as a chromogenic reagent to determine the interference of platinum by the dual wavelength method. The fourth derivative spectrophotometry was used to eliminate the interference of platinum, To achieve the same time without separation of platinum, palladium purpose.