The project "Real-time monitoring of atmospheric pollution using differential absorption spectroscopy" has progressed
Completed by Hebei University of Engineering, "the use of differential absorption spectroscopy real-time monitoring of air pollution research project recently passed the acceptance. The differential absorption spectroscopy used in this project is not only suitable for the high-resolution high-resolution spectrometer to measure the inversion calculation of the atmospheric pollutant NO2 concentration, but more importantly, it is also applicable to the low-cost ordinary spectrometer, and the use of ordinary spectroscopy Also get good inversion results. Since the reference spectrum of this project is obtained on the ground in the area under test, it is more economical and convenient to collect the reference spectrum than on the plane or on the mountain top. Therefore, the use of the technology for the concentration of NO2 atmospheric pollutants cost less money, easy to operate and can guarantee a certain degree of measurement accuracy, with strong universality. At the same time, the technology of differential absorption spectroscopy studied in this project is not only suitable for monitoring the concentration of NO2 in air, but also for the monitoring of other nitrogen oxides, SO2, O3 and other pollutants in the atmosphere. Only need to monitor the wavelength shift to the vicinity of the characteristic absorption peak of pollutants, at the same time, the absorption cross-section data into the corresponding pollutants absorption cross-section data can be. In addition, simultaneous monitoring of multiple contaminants can be achieved if the spectrometer used has a wide range of acquisition wavelengths. The implementation of this project will bring better social, economic and environmental benefits to Handan City and help the city achieve the goal of sustainable development.
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