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A portable direct-reading instrument for the measurement of concentrations of sulphur dioxide in air
AbstractA lightweight portable instrument is described that provides rapid readings of the concentration of sulphur dioxide in polluted atmospheres. The instrument is battery powered, weighs 3 kg and measures 25 cm wide, 25 cm high and 10 cm deep. Air enters via a jet impinger and the SO2 is absorbed in an aqueous solution containing hydrogen peroxide in a conductivity cell. Each observation takes 2 min to complete and at least 100 readings can be taken before the solution needs to be changed. The change in conductivity of the cell is displayed and stored on a liquid crystal panel meter, providing a direct reading in terms of the concentration of SO2 in air, with two ranges, 100–1999μg m−3 and 100-6000μg m−3.
A portable direct-reading instrument for the measurement of concentrations of sulphur dioxide in air
AbstractA lightweight portable instrument is described that provides rapid readings of the concentration of sulphur dioxide in polluted atmospheres. The instrument is battery powered, weighs 3 kg and measures 25 cm wide, 25 cm high and 10 cm deep. Air enters via a jet impinger and the SO2 is absorbed in an aqueous solution containing hydrogen peroxide in a conductivity cell. Each observation takes 2 min to complete and at least 100 readings can be taken before the solution needs to be changed. The change in conductivity of the cell is displayed and stored on a liquid crystal panel meter, providing a direct reading in terms of the concentration of SO2 in air, with two ranges, 100–1999μg m−3 and 100-6000μg m−3.
A portable direct-reading instrument for the measurement of concentrations of sulphur dioxide in air
Atmospheric Environment ; 17 ; 183-186
1982-05-11
4 pages
Article (Journal)
Electronic Resource
English
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