Reference number
Ïã¸ÛÁùºÏ²Ê¿ª½± 4221:1980
International Standard
Ïã¸ÛÁùºÏ²Ê¿ª½± 4221:1980
Air quality — Determination of mass concentration of sulphur dioxide in ambient air — Thorin spectrophotometric method
Edition 1
1980-11
Read sample
Ïã¸ÛÁùºÏ²Ê¿ª½± 4221:1980
10015
Published (Edition 1, 1980)
This publication was last reviewed and confirmed in 2023. Therefore this version remains current.

Ïã¸ÛÁùºÏ²Ê¿ª½± 4221:1980

Ïã¸ÛÁùºÏ²Ê¿ª½± 4221:1980
10015
Language
Format
CHF 63
Convert Swiss francs (CHF) to

Abstract

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

Life cycle

Got a question?

Check out our Help and Support

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)