Investigation of evaporation and atomization processes in a variable-pressure electrothermal atomizer by laser spectroscopy using gallium as an example

A new approach to studying the evaporation and atomization of elements in g raphite furnaces has been developed that combines a highly sensitive techni que of laser-induced fluorescence and variable-pressure atomization. This a pproach allows one to work with low concentrations of analytes correspondin g to real analytical conditions, to separate concurrent processes of evapor ation and atomization, and to determine their parameters. The approach has been used for studying the evaporation and atomization of gallium in isothe rmal graphite furnaces.