GSO ISO 4221:2009
Air quality - Determination of mass concentration of sulphur dioxide in ambient air - Thorin spectrophotometric method

Standard No.

GSO ISO 4221:2009

Release Date

2009

Published By

GSO

Latest

GSO ISO 4221:2009

Scope

This International Standard specifies a Thorin’) spectrophotometic method for the determination of the mass concentration of sulphur dioxide in ambient air.

GSO ISO 4221:2009 history

• 2009 GSO ISO 4221:2009 Air quality - Determination of mass concentration of sulphur dioxide in ambient air - Thorin spectrophotometric method