石蜡相光度法测定痕量钯

本文系统研究了钯（Ⅱ）与１－亚硝基－２－萘酚显色体系酚显本系在石蜡相中的显色反应。在ＰＨ＝０．０６～１１．０范围内，石蜡能定量吸附此显色络合物。采用等吸收点双波长光度法测定固相吸不镀差值，钯的含量在０～１．４ｍｇ／Ｌ范围内符合比一律，从而建立了钯的石蜡相光度分析法。方法应用于钯分子中痕量钯的测定，结果满意。

Determination of Trace Palladium by Paraffin Phase Spectrophotometry

The colour reaction of palladium and 1-nitroso-2-napthol in paraffin phase has been studied.The complex can be quantitatively absorbed in paraffin phase at pH 0.6 to pH 11.0. The absorbance of the solid phase was measured hy using dual wavelength specrophotometry. Beer's law is obeyed in the range of 0 ~ 1.4 mg/L of palladium. The method has been appied to the determination of pelladium in palladium molecular sieve with satisfactory results.