STUDIES ON DIRECT SOLID SAMPLING FOR GRAP HITE-FURNACE AAS

The direct analysis of solid samples by graphite furnace AAS consists of direct solid sampling and slurry sample introduction. The advantage s of using solid sampling and the different kinds of problems associat ed with it discussed. In the case of using direct solid sampling, the sample introduction systems of various kinds of atomizers, the prepara tion methods of calibration graphs, concentration techniques for powde red biological samples and applications of direct solid sampling are d escribed in detail. Distinguishing features and basic problems for slu rry sample introduction are discussed and application examples of the slurry sampling technique are described.