title: Determination of trace elements in coal, fly ash, fuel oil, and gasoline--a preliminary comparison of selected analytical techniques.
mesh_terms: D000397:Air Pollution / Q000032:analysis*; D003031:Coal / Q000032:analysis*; D008722:Methods; D010578:Petroleum / Q000032:analysis; D014131:Trace Elements / Q000032:analysis*
chemical_list: D003031:Coal; D010578:Petroleum; D014131:Trace Elements