Information Extraction Method of SO2 Using Differential Optical Absorption Spectroscopy

Ya Juan Gao; Ya Ni Gao

doi:10.4028/www.scientific.net/AMM.385-386.510

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 385-386Information Extraction Method of SO2 Using...

Information Extraction Method of SO₂ Using Differential Optical Absorption Spectroscopy

Abstract:

The measuring principle of SO₂, which is the main gaseous contaminants in flue gas, is given based on the differential optical absorption spectroscopy (DOAS). And the structure and composition of the measurement system are introduced. In the aspect of obtaining the absorption feature of measured gas, an information extraction method using statistics is presented for measuring the concentration of SO₂. The nonlinear calibration and the temperature compensation for the system were executed. In the lab, the full scale error of the retrieving concentration is less than 0.5%FS. And the measuring result is-9.47mg/m³ during the concentration of SO₂ is zero.

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Periodical:

Applied Mechanics and Materials (Volumes 385-386)

Pages:

510-513

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.385-386.510

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Online since:

August 2013

Authors:

Ya Juan Gao, Ya Ni Gao

Keywords:

Concentration Retrieving, DOAS, Flue Gas Monitoring, Statistics

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