KS I ISO 4221:2006
Air quality－Determination of mass concentration of sulphur dioxide in ambient air(Thorin spectrophotometric method)

Standard No.

KS I ISO 4221:2006

Release Date

2006

Published By

Korean Agency for Technology and Standards (KATS)

Status

Be replaced

Replace By

KS I ISO 4221-2006(2016)

Latest

KS I ISO 4221-2021

Replace

KS I ISO 4221:2001

Scope

This standard describes a method for measuring the concentration of sulfur dioxide in environmental atmosphere by Thorin(1) absorption (spectroscopic) photometry.

KS I ISO 4221:2006 history

• 2021 KS I ISO 4221-2021 Air quality－Determination of mass concentration of sulphur dioxide in ambient air(Thorin spectrophotometric method)
• 0000 KS I ISO 4221-2006(2016)
• 2006 KS I ISO 4221:2006 Air quality－Determination of mass concentration of sulphur dioxide in ambient air(Thorin spectrophotometric method)
• 0000 KS I ISO 4221:2001