Example of a technique for evaluation of interferences caused by complicated sample matrix elements in ICP-AES determination

An example of a useful and rapid procedure for the evaluation of interferen ces caused by complicated sample matrices in inductively coupled plasma ato mic emission spectrometry (ICP-AES) is described. Using simple acid-base st andards, all the elements investigated were determined separately in compli cated matrices with satisfactory results. Multiple linear regression was us ed to calculate the linear correction coefficients for each matrix element analyzed. Good analytical results improved still further when this correcti on method was used.