KS ISO 6767:1990

Ambient air - Determination of the mass concentration of Sulfur dioxide - tetrachloromercurate (TCM) / pararosaniline method.

Specifies a spectrophotometric method, known as the tetrachloromercurate (TCM)/pararosaniIine method, for the determination of the mass concentration of Sulfur dioxide in ambient air within the range of 20 ug / m3 to about 500 ug / m3