| CPC G01N 15/14 (2013.01) [G01N 15/0205 (2013.01); G01N 15/06 (2013.01); G01N 15/075 (2024.01); G01N 2015/1486 (2013.01)] | 18 Claims |
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1. A method for performing optical measurement, comprising:
directing light from a light generator to a light path cell;
generating a light path by continuously reflecting the light directed from the light generator between first and second high reflection mirrors of the light path cell that face each other;
detecting an optical signal from an aerosol sample present within the light path, the aerosol sample including a gas and solid and/or liquid particles suspended within the gas;
separating the optical signal into a particle signal representing the solid and/or liquid particles suspended in the gas and a gas signal representing the gas by using a statistical methodology;
calculating a particle concentration representing the solid and/or liquid particles suspended in the gas from the particle signal by using an assumption about characteristics of the solid and/or liquid particles for implementing an optical particle counter (OPC); and
calculating a gas concentration representing the gas from the gas signal by using optical characteristic data of gas,
wherein the calculating of the particle concentration representing the solid and/or liquid particles suspended in the gas and the calculating of the gas concentration are performed simultaneously, and
wherein separating the optical signal into the particle signal and the gas signal includes expressing a light intensity as an extinction coefficient using the Beer-Lambert Law and separating the particle signal and the gas signal by using algebraic and statistical methodologies.
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