Sx. Ren et L. Gao, SIMULTANEOUS SPECTROPHOTOMETRIC DETERMINATION OF COBALT, COPPER AND NICKEL BY THE FULL SPECTRUM TECHNIQUE IN THE FOURIER DOMAIN, Analytical letters, 28(9), 1995, pp. 1665-1679
Two methods, the multivariate linear regression and full spectrum tech
nique in the fourier domain, were studied for simultaneous determinati
on of cobalt( II:), copper( II:) and nickel(II) in mixture. Two progra
ms, SPGRMLR and SPGRFSQ, were designed to perform these calculations.
In the full spectrum method, seven error functions were calculated for
estimating the number of factors and data reduction was fulfilled by
factor analysis. Experimental results showed the full spectrum method
to be more powerful than multivariate linear regression. Both methods
were demonstrated to be successful in the present case.