Air quality — Determination of mass concentration of sulphur dioxide in ambient air — Thorin spectrophotometric method
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Reference:
ISO 4221:1980
Publication Year:
1980
Domain:
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.
42 500 F CFA
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