T/CQEEMA 3-2021 The determination of hydrogen chloride in pollutant gas from fixed sources by Fourier transform infrared spectroscopy

Scope

Scope: This method specifies the Fourier transform infrared spectrophotometry method for determining hydrogen chloride in the exhaust gas of fixed pollution sources. This method is applicable to the determination of hydrogen chloride in the exhaust gas of fixed pollution sources. The detection limit for hydrogen chloride determined by this method is 1 mg/m3, and the lower limit of determination is 4 mg/m3; Main technical content: This standard establishes a method for determining hydrogen chloride in the exhaust gas of fixed pollution sources based on the principle of Fourier transform infrared spectrophotometry, using Fourier transform infrared spectrophotometry instruments. The determination of hydrogen chloride concentration in the exhaust gas of fixed pollution sources by Fourier transform infrared spectrophotometry instruments has been widely used in international and domestic actual monitoring. Therefore, the method principle and technical performance indicators of the Fourier transform infrared spectrophotometry method specified in this standard are basically the same as those of related foreign standards. The differences lie in that through the analysis of actual monitoring data, the on-site environmental conditions requirements, operating procedures, and operational precautions suitable for the actual monitoring of fixed pollution sources in our city are identified, and these are clearly specified in the standard.

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