I'm unable to find good sources to make myself an
AQI(Air quality Index) measuring device. All I was able to find was the way it is calculated in different regions. But I need some help with the technology used to measure the concentrations of different pollutants like
SO2, NOx, PM10, PM2.5, etc.
Are there any good papers or patents on the technology used to measure the AQI?
Any help is appreciated. Thanks.