摘要
报道了新显色剂５－（２，４－二甲苯基偶氮）罗丹宁的合成及其在分析上的应用，试验结果表明，在非离子表面活性剂ＴｒｉｔｏｎＸ－１００存在下，于ＰＨ７．０的缓冲介质中，试剂可与钯形成２１的红色络合物，其最大吸收波长为５１０ｎｍ。试剂对钯具有较高选择性，所拟方法用于催化剂中钯的测定，结果满意。
A new colour reagent 5-(2,4-dimethylbezeneazo)rhodanine has been synthesized and its colour reaction with palladium has been studied in this paper.The results show that in the presece of nonionic surfactant Triton X-100 and in the buffer solution of pH 7.0 the new reagent reacts with palladium to form a stable red complex with the molar ratio of 2:1.The maxium absorption of the complex is found at 510nm and molar absoptivity is calculated to be 6.7×10~4.Beer's law is obeyed in the range of 0-20μg/25ml for Pd(Ⅱ).The method has been applied to determine palladium in catalysts with satisfactory results.
出处
《冶金分析》
CAS
CSCD
北大核心
1997年第6期1-3,共3页
Metallurgical Analysis
关键词
罗丹宁
钯
光度分析
合成
5-(2,4-Dimethylbenzeneazo)rhodanine
Palladium
Spectrophotometry
Synthesis
