Previously, with the continuous foggy weather in many parts of the country, “PM2.5” has become the hottest word in popular science. Glavni razlog "eksplozije" PM2.5 Vrijednost ovog puta su velike emisije sumpornog dioksida, dušikovih oksida i prašine uzrokovane gorima uglja. 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. S jedne strane, sama gas zagađuje atmosferu, a s druge strane, aerosol koji se formira dušikovim oksidima važan je izvor PM2.5.

Zbog toga je praćenje kisika kotlova na ugalj vrlo važno. Korištenje analizatora kisika Nernst Zirconia može učinkovito pratiti emisije sumpornog dioksida i dušikovih oksida i igrati važnu ulogu u kontroli zagađenja uzrokovanog PM2.5.