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    STUDIA CHEMIA - Issue no. 1 / 2013  
         
  Article:   THE DETERMINATION OF CONCENTRATIONS OF IONS Zn2+ , Cd2+ , Mn2+ WITH 1-(2-PYRIDYLAZO)-2-NAPHTHOL IN AQUEOUS-MICELLAR MEDIUM ON TWO-DIMENSIONAL ABSORPTION SPECTRA OF WAVE LENGTH BY pH COORDINATES.

Authors:  . 		 
       
         
  Abstract:  An iterative author’s algorithm (step-by-step approach) for determine concentrations of ions Zn2+ , Cd2+ , Mn2+ with 1-(2-pyridylazo)-2-naphthol in aqueous-micellar medium on two-dimensional spectra of absorption of wave length by pH coordinates is proposed. Different two- and three-component model mixtures analyses were carried out. Test results comparison of determination and roof-mean-square deviation from introduced concentrations by proposed iterative algorithm and least squares method shows advantages of iterative algorithm for three-component systems and congruent accuracy for two-component systems.

Keywords: two-dimensional absorption spectra, consistent method of incorporating surface, least squares method, 1-(2-pyridylazo)-2-naphthol, complexes, determination of ions Zn2+ , Cd2+ , Mn2+ 		 
         
     
         
         
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