Abstract
The Na2O, MgO, Al2O3, SiO2, P2O5, K2O, CaO, TiO2, MnO, Fe2O3 and S contents were determined in coal power plant waste by X-ray fluorescence using two sample preparation procedures. The differences between XRF results for fused beads and pressed pellets are from 2 to 33%. Grinding of samples to particle size less than 0.050 mm reduces the errors. Pressed pellets method is acceptable for classifying of the waste before recycling; fusion bead method is preferable for highly precise determinations of oxides.
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