Kuyesa koletsandi mayeso osankha mu Euro en 149: 2001 A1: 2009.
Chigoba chimadziwika ndi fumbi la dolomite ndi kukula kwa 0,7 ~ 12μm ndipo fumbi limafika mpaka 400 ± 100mg / m3. Kenako fumbi limasefedwa kudzera pachigoba pamatate opumira 2 a 2 malita pa nthawi yake. Kuyesaku kumapitilira mpaka fumbi pachilichonse nthawi itafika 833mg · h / m3 kapena perance yolimbana ndi mtengo wake.
AKusakanidwa ndi kupuma kwa chigobaadayesedwa.
Masks onse omwe amadutsa mayeso a dolomite kutsimikizira kuti kupuma kwa masks omwe amagwiritsa ntchito pang'onopang'ono chifukwa cha fumbi, motero ndikupatsa ogwiritsa ntchito bwino kwambiri komanso nthawi yayitali yogwiritsa ntchito.
Post Nthawi: Mar-29-2023