Resolution of overlapping polarographic waves and derivative polarographic curves of multicomponent systems using matrix algebra.
Matrix algebra has been applied to the resolution of overlapping polarographic waves and derivative curves of two- and three-component systems. Due to the complex exponential dependence of current on potential at the rising part of the waves, matrices were used to obtain the ratios of the concentrations of the components present, and the amount of each one of the components was calculated from the more reliable sum of the diffusion currents. The method proved successful for all cases of binary mixtures that were examined, but less so for the limiting case of a mixture of o-,m-, and p-nitrobenzoic acids in which all three half-wave potentials are found within 80 mV.
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Department of Chemistry, Polytechnic Institute of Brooklyn, Brooklyn, N.Y., U.S.A.