Abstract
Abstract The use of graphite furnace atomic absorption spectroscopy for the direct determination of traces of beryllium in coal ash is shown to be difficult due to matrix interferences. The determination of beryllium and lithium in coal ash by inductively coupled plasma atomic emission spectroscopy (ICP-AES) is discussed. Samples were prepared in Parr acid digestion bombs using a mixture of nitric and hydrofluoric acids. Results for the concentrations of the above elements in some South African coal ash samples are presented.
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