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STUDIES ON COMPLEXATION IN SOLUTION WITH A PAPER ELECTROPHORETIC TECHNIQUE [THE SYSTEM MERCURY(II)/NICKEL(II)/ LEAD(II) - SARCOSINE]

DOI: 10.4067/S0717-97072012000100009

Keywords: paper electrophoretic technique, mercury(ii) complexes, nickel(ii) complexes, lead(ii) complexes, sarcosine, stability constant.

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Abstract:

complexation reactions of sarcosine with mercury(ii), nickel(ii) and lead(ii) have been studied in the solution phase using a paper ionophoretic technique. this method is based on movement of a spot of metal ion in an electric field at various phs of background electrolyte. a graph of ph versus mobility was used to obtain information on the metal complexes and to calculate stability constants. the stability constants of the ml+ and ml2 complexes of mercury(ii), nickel(ii) and lead(ii) - sarcosine have been found to be (7.95 ± 0.02; 6.79 ± 0.06), (6.69 ± 0.01; 5.29 ± 0.04) and (4.34 ± 0.02; 2.69 ± 0.07) (logarithm stability constant values), respectively at a temperature of 35 ° c and ionic strength of 0.1 m.

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