ISO 7935

Stationary source emissions — Determination of the mass concentration of sulfur dioxide — Performance characteristics of automated measuring methods

The ISO 7935 standard covers the performance characteristics of automatic measurement systems for the continuous determination of mass concentrations of sulfur dioxide (SO2) by the Electrochemical Cell Method in point source emissions.

Includes extractive and non-extractive sulfur dioxide (SO2) measurement methods.

Extractive Methods: These methods generally cover sampling and analysis processes. The sampling line should contain the filter and dehumidification sections, and the sampling line should be heated to prevent sulfur dioxide losses and false readings.

Non-Extractive Methods: In this method, measurement is made with a device consisting of a beam emitter placed in the gas flow in the pipe and the receiver of the beam passing through the gases containing sulfur dioxide (SO2).

Fixed source emissions - Contact Nanolab Environmental Analysis Laboratory for the determination of the mass concentration of sulfur dioxide.