Special AAS methods

There have been attempts to develop special methods for some elements which cause problems with solvent analysis when using the flame or furnace atomiser techniques. 

Two basic trends can again be recognised, i.e. variations in the equipment or in the associated chemical reactions. 

The direct introduction of atomic vapour into the AAS flame can also be seen as an equipment variation [148, 152], Here, the evaporation of the steel samples can be carried out with the help of the glow-discharge lamp [148] or an aerosol generator with a low current d.c.-arc discharge [152]. Another example is the combination of gas chromatography and AAS [92], where AAS is used as an element detector. 

Chemical reactions whose product is gaseous and contains the element to be determined have proved useful. The determination of Hg as metal vapour 

Determination of mercury in iron ores, dust and slurry 

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