Method for the rapid atomic-absorption determination of silver in solid carboniferous samples

It is shown that carboniferous samples can be analyzed by injecting them directly into an electrothermal atomizer of an atomic absorption spectrometer as an aqueous suspension stabilized by a surface-active substance. The main factors affecting the stability of the suspension and the metrological characteristics of the procedure are considered; methods for their estimation and approaches to the optimization of the analysis conditions are proposed. A rapid procedure for the determination of silver in carboniferous samples is developed that reduces the time of analysis by several times.