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

ISO 4221:1980

ISO 4221:1980
10015
Language
Format
CHF 67

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

  •  : Published
     : 1980-11
    : International Standard confirmed [90.93]
  •  : 1
     : 7
  • ISO/TC 146/SC 3
    13.040.20 
  • RSS updates

Life cycle

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