[Determination of free silicon dioxide in small quantities of dust by the fluoride method].
D004391:Dust / Q000032:analysis*; D008722:Methods; D012822:Silicon Dioxide / Q000032:analysis*
D004391:Dust; D012822:Silicon Dioxide
Opredelenie svobodnoĭ dvuokisi kremniia v malykh naveskakh pyli ftoridnym metodom.