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本文系统研究了钯（Ⅱ）与1-亚硝基-2-萘酚显色体系在石蜡相中的显色反应。在pH=0．6－11．0范围内，石蜡能定量吸附此显色络合物。采用等吸收点双被长光度法测量固相吸光度差值，把的含量在0－1．4mg/L范围内符合比尔定律，从而建立了钯的石蜡相光度分析法。方法应用于钯分子筛中痕量钯的测定，结果满意。
In this paper, the color reaction of palladium (Ⅱ) with 1-nitroso-2-naphthol in the paraffin phase was studied systematically. Paraffin waxes can quantitatively adsorb this chromogenic complex at pH = 0.6-11.0. The double absorption point was measured by the long photometric method to measure the difference of the solid phase absorbance, and the content of which was in the range of 0-1.4 mg / L was in accordance with Beer’s Law. Thus, the paraffin phase spectrophotometry of palladium was established. The method was applied to the determination of trace palladium in palladium molecular sieve with satisfactory results.