Color Reaction of 2-(2-Quinolylazo)-5-Dimethylaminoaniline with Palladium and Its Application

Authors : Yunsen SI, Qiufen HU, Zhangjie HUANG, Guangyu YANG, Jiayuan YIN

Pages : 135-140

View : 16 | Download : 10

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :A new chromogenic reagent, 2-insert ignore into journalissuearticles values(2-quinolylazo);-5-dimethylaminoaniline insert ignore into journalissuearticles values(QADMAA); was synthesized. A sensitive, selective and rapid method for the determination of palladium based on the rapid reaction of palladiuminsert ignore into journalissuearticles values(II); with QADMAA was developed. In the presence of 0.5-2.5 mol L-1 of hydrochloric acid solution and cetyl trimethylammonium bromide medium QADMAA reacts with palladium to form a violet complex with a molar ratio of 1:2 insert ignore into journalissuearticles values(palladium to QADMAA);. The molar absorptivity of the chelate is 1.35x105 L mol-1 cm-1 at 600 nm. Beer`s law is obeyed in the range of 0.01 to 0.6 m g mL-1. The detection limit is 1.2 m g L-1. This method has been applied to the determination of palladium with good results.
Keywords : 2 2 quinolylazo, 5 dimethylaminoaniline, palladium, spectrophotometry