CarboxyhemoglobinCarbon Monoxide PoisoningMethemoglobinCarbon MonoxideSulfhemoglobinOximetryMethylene ChlorideHemoglobinsSmoke Inhalation InjuryMethemoglobinemiaOxyhemoglobinsBlood Gas Monitoring, TranscutaneousChromatography, GasDithioniteBarium CompoundsPotassium CompoundsSpectrophotometryPhotolysisSmoking