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ISO 4221:1980

Air quality — Determination of mass concentration of sulphur dioxide in ambient air — Thorin spectrophotometric method

Standard Details

Applies to the range of 3,5 to 150 micrograms per cubic metre, assuming an air sample volume of 2 m3 and a sample solution volume of 50 ml. For higher concentrations, dilution of the sample may be necessary.

General Information

Status : Published
Standard Type: Main
Document No: ISO 4221:1980
Document Year: 1980
Pages: 7
Edition: 1

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ISO 4221:1980
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