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E-Journal of Chemistry
Volume 8 (2011), Issue 1, Pages 217-225

Determination of Traces of Pd(II) in Spiked Samples by Using 3,4-Dihydroxybenzaldehydeisonicotinol-hydrazone as a Chelating Agent with UV Visible Spectrophotometer

S. Lakshmi Narayana,1 C. Ramachandraiah,2 A. Varada Reddy,3 Dongyeun Lee,1 and Jaesool Shim1

1School of Mechanical Engineering, Yeungnam University, Gyeongsan-si-712 749, Republic of Korea
2Department of Chemistry, Sri Kalahastheeswara Institute of Technology, Sri Kalahasthi, India
3Analytical Division, Department of Chemistry, Sri Venkateswara University, Tirupati-517 502, India

Received 6 May 2010; Accepted 18 July 2010

Copyright © 2011 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A simple, rapid, sensitive and inexpensive method has been developed for the determination of trace amounts of palladium(II) using 3,4-dihydroxybenzaldehydeisonicotinoylhydrazone (3,4-DHBINH). The metal ion gives a yellow colored complex with 3,4-DHBINH in acetate buffer of pH 3.0 with 1:1 (metal: ligand) composition. The complex shows maximum absorption at 380 nm. Beer’s law is obeyed in the range 0.5-20.0 ppm of Pd(II). The molar absorptivity, Sandell’s sensitivity and detection limit were found to be 0.53×104 L mol-1 cm-1, 0.02 μg cm-2 and 0.0948 μg mL-1, respectively. The correlation coefficient and regression coefficient of the Pd(II)-3,4-DHBINH complex were 1.08 and 0.04 respectively. Major cations and anions did not show any interference. Anti-microbial activity of the Pd(II)-3,4-DHBINH has been studied. The developed method has been successfully applied to the analysis of Pd(II) in spiked samples. Comparing the results with those obtained using an atomic absorption spectrophotometer tested the validity of the method