A trace element concentration of 1 ppm 00001 by weight or expressed in another way a 1 ppm concentration of a trace element equals one pound in one million pounds 500 tons of coal most trace elements in west virginia coals are present at levels of 10 to 100 ppm or less. Trace elements in coalnearly most of the elements in the periodic table can be detected in measurable amounts in coal however little is known about the mode of occurrence or distribution of these elements. The properties of trace elements in coal fly ash and 2 inves tigate the behavior of these trace element constituents under different environmental conditions trace elements in coal fly ash speciation and occurrence coal fly ash samples were examined to determine which trace elements were present their concentrations and chemical . Trace elements in coal focuses on the compositions reactions and properties of trace elements in coal the book first discusses the origin of trace elements in coal. 2 origin of trace elements in coal 21 the formation of peat 22 geological and geochemical aspects of coal seams 23 geology of australian coals 24 coal mining in australia 25 the constitution of coal 26 the history of trace elements in coal 3 mode of occurrence of trace elements in coal 31 trace element organic matter associations
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