Previously, with the continuous foggy weather in many parts of the country, “PM2.5” has become the hottest word in popular science. Impamvu nyamukuru yo "guturika" kwa PM2.5 Agaciro muriki gihe ni imyuka nini ya dioxyde de sulfure, azote oxide n'umukungugu utewe no gutwika amakara. As one of the current sources of PM2.5 pollution, the exhaust gas emissions of coal-fired boilers are very prominent. Among them, sulfur dioxide accounts for 44%, nitrogen oxides account for 30%, and industrial dust and smoke dust together account for 26%. The treatment of PM2.5 is mainly industrial desulfurization and denitrification. Ku ruhande rumwe, gaze ubwayo izanduza ikirere, kurundi ruhande, Aeroliya yakozwe na oxides oxides ni isoko y'ingenzi ya PM2.5.