[An improved method of measuring sulfur dioxide level in the air]
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Updated: Aug 18, 2026

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Calibrated Passive Sampling - Multi-plot Field Measurements of NH3 Emissions with a Combination of Dynamic Tube Method and Passive Samplers
Published on: March 21, 2016
Abstract:
Out of a set of tested stabilizers used in the photometric detection of sulphur dioxide by fuchs in formaldehyde reactions, trilon B solution was chosen in concentrations 2.5.10(-4)-1.10(-2) M as an absorbent solution and stabilizer. The proposed substitution of natrium tetrachlormercurate by trilon B provided greater stability of sulphur dioxide solution for 7 days and a higher absorbing activity (99.6-100%), avoiding working with highly poisonous substance which would require much time for synthesis.

