摘要
报道了新显色剂DBSDAA(2,6-二溴-4-氨磺酰基苯基重氮氨基偶氮苯)与Pd(Ⅱ)的显色反应。研究表明,在Triton X-100的存在下,于pH10.0的Na_2CO_3—NaHCO_3介质中,该试剂与Pd(Ⅱ)可生成稳定的红色配合物,其最大吸收波长位于530nm,摩尔吸光系数为1.15×10~5。Pd(Ⅱ)量在0～12μg/25ml符合比尔定律。
A sensitive and selective spectrophotometry method for the determination of palladium is based on the reaction of palladium with cited reagent to form a stable red complex, which is found in the presence of Triton X-100 and at pH 10.0. Its molar absorptivity is 1.15×10~5 at 530 nm. The molar ratio of palladium to the reagent is 1:2. Beer' s law is obeyed within 0～12μg Pd(II) per 25 ml. The method has been used to determine palladium in catalysts with satisfactory results.
出处
《贵金属》
CAS
CSCD
北大核心
1991年第3期50-53,共4页
Precious Metals
关键词
钯
测定
分光光度法
微量分析
Palladium
Spectrophotometry
Micro-analysis
