Optimization of the conditions of sorption recovery and concentration of noble metals on anion exchangers and their subsequent determination in geochemical objects by atomic-emission spectroscopy

Sorption of Au(III), Pt(IV), Pd(II), and Rh(III) ions on ANS-80, AN-108-4 macrocellular anion exchangers and on AV-17-10P macroporous anion exchanger from hydrogen chloride media was studied in relation to HCl concentration and time. The residual concentration of matrix elements in analytical concentrates of a real object was determined and their influence on the delivery of vapors of noble metals into the cloud of the arc discharge and on their excitation in the discharge was revealed. The conditions of recovery, concentration, and atomic-emission determination of noble metals were examined. The effect of matrix elements, combined with a number of supports (NaCl, CdO, TeO3, Sb2O3), on the amplitude of analytical signals was evaluated.