title: Trace element detection by the particle induced X-ray emission process.
mesh_terms: D000393:Air Pollutants / Q000032:analysis; D000818:Animals; D006801:Humans; D012107:Research Design; D013052:Spectrometry, X-Ray Emission / Q000379:methods*; D014131:Trace Elements / Q000032:analysis*
chemical_list: D000393:Air Pollutants; D014131:Trace Elements