title: [Quantitative determination of free silica in dust samples by using infrared spectroscopy].
mesh_terms: D002677:Chile; D004391:Dust / Q000032:analysis*; D008722:Methods; D012822:Silicon Dioxide / Q000032:analysis*; D013055:Spectrophotometry, Infrared
chemical_list: D004391:Dust; D012822:Silicon Dioxide
vernacular_title: Determinación cuantitativa de sílice libre por espectroscopia infrarroja en muestras de polvo