ISO 4221:1980
Air quality — Determination of mass concentration of sulphur dioxide in ambient air — Thorin spectrophotometric method
Air quality — Determination of mass concentration of sulphur dioxide in ambient air — Thorin spectrophotometric method
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Air quality — Determination of mass concentration of sulphur dioxide in ambient air — Thorin spectrophotometric method
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.
| Edition | 1980 |
|---|---|
| Published Date | 1980 |
| Published By | International Standardization Organisation |
| Page Count | 7 |