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Using broadband absorption spectroscopy to measure concentration of sulfur dioxide
Authors:H. S. Wang  Y. G. Zhang  S. H. Wu  X. T. Lou  Z. G. Zhang  Y. K. Qin
Affiliation:(1) Faculty of Medicine, University of Niš, Niš, Serbia
Abstract:
A linear relationship between concentration of sulfur dioxide (SO2) and optical parameter (OP) is established using the Beer–Lambert law. The SO2 measuring system is set up to measure the concentration of sulfur dioxide in the wavelength range 275–315 nm. Experimental results indicate that the detection limit of the sulfur dioxide measuring system is below 0.2 ppm per meter of path length, and the measurement precision is better than ±1%. The proposed SO2 measuring method features limited interference from other gases and dust, and high stability and short response time.
Keywords:
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