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- W2155385344 abstract "Abstract Energy-dispersive x-ray detection of elements from scanning electron microscopy (SEM-EDX) was used to determine amounts of elements in coal macerals. X-ray diffraction (XRD) was used to determine minerals in the low temperature ashes of the coals. SEM-EDX elemental assemblages in grains and the body of the coal were assigned to mineral categories using XRD results. Macerals were determined petro-graphically. Most nonorganic elements were found in minerals. Organically associated elements such as Cl, Cs, Cr, P, organic sulfur (So), Sc, and V were consistently found in the coal matrix. Inorganically associated elements such as Al, Ca, Mg, and Si were also commonly found in the matrix. Vitrinitelhuminite (V/H) maceral matrix had higher levels of sulfur than the inertinite and liptinite maceral matrix. Low temperature ashing of the pellet surface accentuated the higher levels of Si and Al intimately mixed with the V/H matrix compared to inertinites (I) or liptinites (L). Fusinites (I) often had no no..." @default.
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- W2155385344 date "1990-01-01" @default.
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- W2155385344 title "Elements and Minerals in Coal Macerals" @default.
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- W2155385344 doi "https://doi.org/10.1080/00908319008960182" @default.
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