Аннотация
An inductively coupled plasma atomic emission spectroscopy method for speciation of Ag, Cu, Bi, Sb, As, Ni, Cd, Zn, Sn, and Fe in grade lead is described. The spectrometer was calibrated using water solutions with known concentrations of trace elements. The matrix effects were taken into account using an internal standard added to the reference-sample, calibrated-blank, reagent-blank, and tested-sample solutions. The metrological examination of the technique was accomplished. The repeatability rms error does not exceed 0.10. The systematic error is not statistically significant.