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Selective Complexometric Determination of Palladium by Using L-Cystine as Releasing Agent

K.G. Chandrashekhara1,*, N. Gopalakrishna Bhat1 and P. Nagaraj2

1Department of Chemistry, Srinivas Institute of Technology, Merlapadav-574 143, India

2Department of Chemistry, Dr. M.V Shetty Institute of Technology, Moodabidri-574 225, India

*Corresponding author: E-mail: kagochara@gmail.com
Abstract

A complexometric method for the determination of palladium in the presence of other metal ions based on the selective masking ability of L-Cystine towards palladium is described. Palladium(II) is complexed with excess of EDTA and the surplus EDTA is back titrated with standard lead nitrate solution at 5 to 6 pH by using hexamine and xylenol orange as an indicator. L-Cystine (0.02 M) solution is then added to release EDTA quantitatively from Pd-EDTA complex. The EDTA released is back titrated with standard lead nitrate solution as before. The method works well in the concentration range 2 to 34 mg of Pd with relative error £ 0.94 % and relative standard deviation £ 1.21 %. The method has been successfully applied to the determination of Pd in alloy composition and complexes.
Keywords

Palladium determination, Complexometry, L-Cystine, Releasing agent.
Reference (20)

1.      B. Mathew and D. Innocent, Asian J. Chem., 22, 7551 (2010).

2.      S. Sacmacl, S. Kartal and S. Dural, J. Braz. Chem. Soc., 23, 1033 (2012);
doi:10.1590/S0103-50532012000600006.

3.      K.N. Raoot and S. Raoot, Indian J. Chem., 12, 1007 (1974).

4.      K.N. Raoot, S. Raoot and V.G. Vaidya, Indian J. Chem., 18A, 90 (1979).

5.      S. Raoot, K.N. Raoot and V.L. Kumari, Analyst, 107, 1382 (1982); doi:10.1039/an9820701382.

6.      H.R.A. Gadiyar, B. Narayana and M.R. Gajendragad, Curr. Sci., 56, 1279 (1987).

7.      A.V. Gadag, M.R. Gjendragad and H.V. Sudhakara Nayak, J. Indian Chem. Soc., 60, 887 (1983).

8.      A. Nityananda Shetty, R. V. Gadag and M. R. Gajendragad, Indian J. Technol., 27, 224 (1987).

9.      B. Narayana and M.R. Gajendragad, Microchem. J., 36, 364 (1987); doi:10.1016/0026-265X(87)90179-2.

10.  B. Muralidhara Rao and B. Narayana, Acta Cienica India, 18, 401 (1992).

11.  B. Muralidhara Rao and B. Narayana, Ann. Chim., 83, 431 (1993).

12.  B.M. Rao, B. Narayana, B. Mathew and K.S. Bhat, Microchim. Acta, 118, 63 (1995); doi:10.1007/BF01242228.

13.  P. Shetty and A. Nithyananda Shetty, Indian J. Chem. Technol., 16, 259 (2009).

14.  K.N. Raoot and S. Raoot, Talanta, 28, 327 (1981); doi:10.1016/0039-9140(81)80170-1.

15.  S. Raoot and K.N. Raoot, Indian J. Technol., 18, 345 (1980).

16.  A.I. Vogel, A Text Book of Quantitative Inorganic Analysis,Longman, London, edn. 3, p. 51 (1964).

17.  A.I. Vogel, Vogel's Text Book of Quantitative Chemical Analysis, ELBS, Longman, UK, edn. 5 (1989).

18.  R.G. Pearson, Chem. Br., 3, 581 (1967).

19.  R.G. Pearson, J. Chem. Educ., 45, 581 (1968); doi:10.1021/ed045p581.

20.  R. Palaniappan, Curr. Sci., 58, 958 (1989).
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