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The ash produced from the combustion of the Trapper Mine coal is typical of that <br />found with other bituminous SJestern coals. The Hayden Plant composite test burn <br />coal sample was chemically analyzed to determine relative concentrations of key <br />chemical constituents. Both spark source mass spectroscopy (SSMS) and neutron <br />activation analysis (NAA) were used [o provide a semi-quantitative and qualita- <br />tive estimate of the types and concentrations of elements in the coal. In addi- <br />tion, quantitative analysis of [his coal sample was accomplished through the use <br />of standard atomic absorption techniques and [he relatively new quantitative <br />method of inductively coupled argon plasma emission spectroscopy (now recognized <br />by EPA, December 13, 1979). The results of these analyses are presented in Table <br />4.3-2. Zinc, manganese, barium, boron, chromium, and vanadium were found in con- <br />centrations of 20 to 300 mg/kg in the coal. Concentrations of arsenic, selenium, <br />cadmium, mercury and silver are relatively lower with concentrations less than 2 <br />mg/kg of coal. <br />The concentration of major components found in the fly ash and bottom ash from <br />the Hayden test burn are summarized in Table 4.3-3. Concentrations of these <br />major elements are expressed in the oxide form in order to calculate a mass <br />balance of recovery. The chlorine and sulfur concentrations in the ash are very <br />low, implying their partitioning [o [he flue gas. Calcium concentrations are <br />significantly lower than expected from channel seam coal data. The concentration <br />of calcium and potassium are such that the ash is alkaline in nature. The con- <br />centrations of sodium, potassium, magnesium, sulfur, silicon, aluminum and iron <br />are such that the fly ash would meet ASTM C-311 specifications and as such would <br />be acceptable as partial replacement for Portland cement in concrete. The bottom <br />ash has higher concentrations of silicon .and iron and lower concentrations of <br />aluminum and potassium than the fly ash. <br />Three different samples of fly ash were subjected to spark source mass spectro- <br />scopy (SSMA) analysis. The results of this testing are summarized in Table <br />4.3-4. Composite samples of both fly ash and bottom ash collected during the <br />test burn were analyzed by neutron activation analysis (NAA), Inductively <br />Coupled Argon Plasma Emission Spectroscopy (ICAPES) analysis, and atomic absorp- <br />_ tion (AA) analysis. Results of the SSMS and NAA analyses should be interpreted <br />as semiquantitative (+ a factor of 2-10) while [he analytical results obtained by <br />4-29 <br />