BS 1747-10:1990 Methods for measurement of air pollution-Determination of the mass concentration of sulphur dioxide in ambient air: tetrachloromercurate (TCM)/pararosaniline method
1991BS 1747-10:1990 Methods for measurement of air pollution-Determination of the mass concentration of sulphur dioxide in ambient air: tetrachloromercurate (TCM)/pararosaniline method