Studies on complexation in solution with a paper electrophoretic technique [the system mercury(ii)/nickel(ii)/ lead(ii) - sarcosine]

• B. B TEWARI ^[1]
  1. [1] University of Guyana

     University of Guyana

     Guyana

     
• Localización: Journal of the Chilean Chemical Society (Boletín de la Sociedad Chilena de Química), ISSN-e 0717-6309, ISSN 0366-1644, Vol. 57, Nº. 1, 2012, págs. 995-998
• Idioma: inglés
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• Resumen

  • 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.