摘要
在p～H为6.3-7.5的介质中,铑(Ⅲ)与间硝基苯基荧光酮以及CTMAB形成三元络合物,其最大吸收波长为608纳米,表观摩尔吸光系数为ε_608=8.89×10～4。铑含量在0-5微克/10毫升范围内服从比耳定律。络合物中铑与显色剂的摩尔比为1:3。运用该法测定了三氧化二铝载体铑催化剂中铑的含量,取得了满意的结果。
The conditions for the determination of Rh (III) using m-nitrophe- nylfluorone and cetyltrimethylammonium bromide have been investigated in pH 6.3-7.5 solution. The absorption maximum of the complex has been found at 608nm. The apparent molar absorption coefficient of the complex is 8.89 ×10~4. Beer's law is obeyed in the range of 0-5μg per 10 ml for Rh. The molar ratio of Rh (III) to m-NPF is 1:3 in the complex. This method has been applied for the determination of Rh (III) in Rh-Al_2O_3 catalyst. satisfactroity.
出处
《光谱实验室》
CAS
CSCD
1993年第4期6-9,共4页
Chinese Journal of Spectroscopy Laboratory
关键词
分光光度法
铑
间硝基苯基
荧光酮
Spectrophotometry
Rhodium(III)
m-Nitrophenylfluorone
