Determination of lead in salt water by atomic absorption spectrometry with electrothermal atomization
The possibility of direct determination of lead in water with high salinity is studied. In the case where the total mineralization of water is in the range of 1-20 g/l, the absorption signal of lead is reduced by a third and at salt concentration greater than 20 g/l - by half. The best signal / background ratio was obtained when we add Pd/Mg modifier in the investigated saline waters, the detection limit of lead in this case achieved to 0.005 mg/l (without modifier - 0.010 mg/l).