Preċedentement, bit-temp taċ-ċpar kontinwu f'ħafna partijiet tal-pajjiż, "PM2.5" saret l-iktar kelma sħuna fix-xjenza popolari. The main reason for the “explosion” of the PM2.5 value this time is the large emissions of sulfur dioxide, nitrogen oxides and dust caused by coal burning. Bħala wieħed mis-sorsi attwali tat-tniġġis ta 'PM2.5, l-emissjonijiet tal-gass tal-egżost tal-bojlers li jaħdmu bil-faħam huma prominenti ħafna. Fost dawn, id-dijossidu tal-kubrit jammonta għal 44%, l-ossidi tan-nitroġenu jammontaw għal 30%, u trab industrijali u trab tad-duħħan flimkien jammontaw għal 26%. It-trattament ta 'PM2.5 huwa prinċipalment desulfurizzazzjoni u denitrifikazzjoni industrijali. On the one hand, the gas itself will pollute the atmosphere, and on the other hand, the aerosol formed by nitrogen oxides is an important source of PM2.5.
Għalhekk, il-monitoraġġ tal-ossiġnu tal-bojlers li jaħdmu bil-faħam huwa importanti ħafna. Using Nernst zirconia oxygen analyzer can effectively monitor the emissions of sulfur dioxide and nitrogen oxides, and play an important role in controlling pollution caused by PM2.5.
