The report gives results of the sampling of four coal-fired industrial boilers to determine the emissions of 19 trace and minor elements and polycyclic matter (POM). The trace and minor element emissions were related to total quantities of each element present in the fuel by examining the degree of mass balance and element partitioning based on fuel input and element output in furnace deposits, flyash, and flue gas vapor. The tendency of volatile elements for enrichment of finer particulate was examined by analysis of cascade sample. Measured output of elements classified as high in volatility tended to be less than the fuel input, attributed to possible low collection efficiency of vapor-phase element sampling equipment. Elements classed as medium or low in volatility tended to be more uniformly distributed with respect to both partitioning in the boilers and particle size. The presence of four specific POM compounds was indicated in the coal, ashes, and stack gases, but results were highly variable.

"Contract No. 68-02-1074." "ROAP No. 21BCC-046." "Program Element No. 1AB014." "October 1976." "EPA/600-2-76-086b." Includes bibliographical references (pages 140-143).