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ISO 4221:1980

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

Nov 1, 1980

General information

90.93     Sep 18, 2023

ISO

ISO/TC 146/SC 3

International Standard

13.040.20  

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Scope


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.

Life cycle

NOW

PUBLISHED
ISO 4221:1980
90.93 Standard confirmed
Sep 18, 2023

National adoptions

SRPS ISO 4221:1997  
ISS

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

90.93   Standard confirmed

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