?SPECTROPHOTOMETRIC DETERMINATION OF PA-LLADIUM (II) WITH RUBEANIC ACID (RA) IN PRESENCE OF PYRIDINE, PIPERIDINE AND 3-PICOLINE

Authors

  • M Hassi ruzzamanv Institute of Nuclear Science and Technology, Nuclear Chemistry Division, Bangladesh Atomic Energy Commission, POBox 3787, Dhaka 1000, Bangladesh
  • G M Mizanur Rahman Department of Applied Chemistry and Chemical Technology,University of Dhaka, Dhaka-lOOO, Bangladesh
  • A S M Kamal Department of Applied Chemistry and Chemical Technology,University of Dhaka, Dhaka-lOOO, Bangladesh
  • Md Humayun Kahil Department of Applied Chemistry and Chemical Technology,University of Dhaka, Dhaka-lOOO, Bangladesh
  • M Altaf Hossain Department of Applied Chemistry and Chemical Technology, University of Dhaka, Dhaka-lOOO, Bangladesh
  • A I Mustafa Department of Applied Chemistry and Chemical Technology,University of Dhaka, Dhaka-lOOO, Bangladesh

Keywords:

Spectrophotometry, Rubeanic acid, Secondary Iigands, Palladium (II).

Abstract

Unpretentious and exclusive methods for the spectrophotometric determination of trace amount of divalent palladium
(II) have been developed with rubeanic acid (dithio-oxamide) in presence of secondary iigands like pyridine, piperidine
and 3-picoline. Both direct and extraction spectrophotometry showed that coloured rubeanates are only stable in acidic
medium. The violent yellow coloured products are formed below pH 5.0 with an absorption maxima at 416.0 and 422.0
(pyridine), 405.0 and 416.5 (piperidine) and 418.0 and 422.0 (3-picoiine) both in direct and isoamyl alcohol (IAA)
extracted system, respectively. Results indicate that the highest sensitivity and molar absorptivity of Pd-RA pyridine
system in direct spectrophotometry were 0.01497 ug Pd (II) em? and 7\07.89 L mol' cm' respectively. IAA
extracted Pd-RA-piperidine system was found to give a sensitivity of 0.0\087 ~g(Pd(II) crrr? and molar absorptivity
of 9788.80 L mol:' em:' which were the highest of all the system. The effects due to variation of pH, reagent
concentrations, order of addition of reagents, time, temperature and solvent media on the absorption spectra have been
investigated and the optimum conditions determined. The effects of diverse ions and their tolerance limit have also been
studied .

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Published

1999-08-23

How to Cite

ruzzamanv, M. H., Rahman, G. M. M., Kamal, A. S. M., Kahil, M. H., Hossain, M. A., & Mustafa, A. I. (1999). ?SPECTROPHOTOMETRIC DETERMINATION OF PA-LLADIUM (II) WITH RUBEANIC ACID (RA) IN PRESENCE OF PYRIDINE, PIPERIDINE AND 3-PICOLINE. Biological Sciences - PJSIR, 42(4), 173–176. Retrieved from http://v2.pjsir.org/index.php/biological-sciences/article/view/2145

Issue

Vol. 42 No. 4 (1999): Pakistan Journal of Scientific and Industrial Research

Section

Articles