[An improved method of measuring sulfur dioxide level in the air].
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.
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D000395:Air Pollutants, Occupational / Q000032:analysis*; D002617:Chemical Industry / Q000592:standards*; D005557:Formaldehyde / Q000494:pharmacology; D007202:Indicators and Reagents / Q000494:pharmacology; D010783:Photometry / Q000379:methods; D012394:Rosaniline Dyes / Q000494:pharmacology; D013458:Sulfur Dioxide / Q000032:analysis* / Q000592:standards; D014455:Ukraine
D000395:Air Pollutants, Occupational; D007202:Indicators and Reagents; D012394:Rosaniline Dyes; D013458:Sulfur Dioxide; D005557:Formaldehyde
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