Atomic absorption determination of beryllium in light alloys based on aluminium and magnesium

The method of atomic-absorption determination of beryllium (nx10-4-10-1% in mass) in light alloys on the basis of aluminium and magnesium, dissolved in HCl using graphite atomizer, has been developed. Conditions of electrothermal atomization of beryllium from hydrochloric acid solutions are as follows: drying for 20 s at 100 deg, thermal decomposition for 20 s at 650 deg,atomization for 7 s at 2600 deg. It is established, that 0.06-0.6 M HCl do not affect beryllium absorption ability. It is found, that Al gives a considerable background signal, increasing the analytical signal of beryllium. Magnesium practically does not affect beryllium absorption