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SRPS ISO 4221:1997

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

Oct 22, 1997
Oct 22, 1997

General information

90.93     Sep 18, 2023

90.20    Jul 15, 2028

ISS

H146

International Standard

13.040.20  

Serbian  

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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
SRPS ISO 4221:1997
90.93 Standard confirmed
Sep 18, 2023

Related project

Adopted from ISO 4221:1980