Concentration of trace elements found in coal, ash, and materials used in a fluidizedbed combustion process have been determined
by thermal neutron activation and absolute Ge(Li) gamma-ray spectrometry. Described are the calibration of detectors and corrections
associated with the method along with estimated uncertainties. A brief description of the computer code used in the processing
of the Ge(Li) spectra is presented. Comparisons of instrumental neutron activation analysis results with NBS standards and
those obtained by the atomic absorption technique are tabulated. A total of 21 trace elements have been determined or identified
in the fluidized-bed products and these results are used in identifying trace element depositions in various stages of the
fluidizedbed combustion process.