摘要
研究了在0.45mol·L^(-1)H_2SO_4介质中,痕量钯催化溴酸钾氧化偶氮氯膦Ⅲ这一新指示反应的动力学条件。建立了催化光度法测定钯的新方法。测定范围为0～0.4μg/25ml,摩尔吸光系数为4.8×10~6。用于合成样品及含钯催化剂的分析,结果满意。
The kinetic reaction conditions for the catalytic oxidation of CPA Ⅲ by KBrO3 in the presence of trace amounts of palladium in a 0. 05mol ?L-1 H2SO4 medium are studied and reported in this paper. A new sensitive method for determination of traces of Pd is thus established. Beer' s Law is obeyed in the concentration range of Pd 0-0.4μg/25ml. With an apparent molar absorptivity of 4. 8× 106. The proposed method has been applied to the determination of palladium in some catalysts and the re suits obtained proved to be satisfactory.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
1995年第6期333-334,共2页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
关键词
偶氮氯膦
钯
光度法
Catalytic Spectrophotornetrie trie method Chlorophosphonazo (Ⅲ) Palladium
