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

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

A new chromogenic reagent, 2-(2-quinolylazo)-5-dimethylaminoaniline (QADMAA) was synthesized. A sensitive, selective and rapid method for the determination of palladium based on the rapid reaction of palladium(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 (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.

Anahtar Kelimeler:

2-(2-quinolylazo)-5-dimethylaminoaniline, palladium, spectrophotometry

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

Keywords:

2-(2-quinolylazo)-5-dimethylaminoaniline, palladium, spectrophotometry,

PDF

___

W. Bauer, W. Beck and W. Ponikwar, Zeit. Natur. 55, 946-952 (2000).
G. Patrick and P. Michel, Platinum. Met. Rev. 47, 60-72 (2003).
Y.E. Zeng, H.S. Zhang?and Z.H. Chen. “Handbook of Modern Chemical Reagents, the Fourth Fas- cicule, Chromogenic Agent of Inorganic Ion” 1sted., Beijing, China, Chinese Chemical Industry Press. B.K. Reddy, K.J. Reddy, J.R. Kumar, A.K. Kumar and A.V. Reddy, Anal. Sci. 20(6), 925-930 (2004).
V. Vojkovic and V. Druskovic, Croat. Chem. Acta. 76(1), 87-92 (2003).
R.S. Lokhande, H.G. Nemade, A.B. Chaudhary and D.G. Hundiwale, Asian. J. Chem. 13(2), 596-602 (2001).
B. Maria and P. Katarzyna, Chem. Anal. 48, 87-95 (2003).
L.S. Sarma, J.R. Kumar, K.J. Reddy and A.V. Reddy, Anal. Sci. 18, 1257-1261 (2002).
D.L. Ma, F.L. Cui, D.S. Xia and Y.L. Wang, Anal. Lett. 35, 413-421 (2002).
D. Gholivand and B. Mohammad, Talanta. 52, 1055-1060 (2000).
Q.F. Hu, G.Y. Yang and J.Y. Yin, J. Environ. Monit. 4, 956-959, (2002).
G.Y. Yang, Q.F. Hu, G.Y. Yang, Z.J. Huang and J.Y. Yin, Anal. Sci. 19, 299-302 (2003).
G.Y. Yang, Z.J. Huang, Q.F. Hu and J.Y. Yin, Talanta. 58. 511-515 (2002).
Edited by Chinese Environment Protection Agency. “Analysis Method of Water and Waste Water”, 3th ed. pp. 465-458, Beijing, China, Chinese Environmetal Science Press. S.A. Dong, J. Chen and R.L. Wu. “Analysis Methods of Precious Metals”, 1sted.; Beijing, pp. 263-268, China, Chinese Science Press.