Trace sulfur dioxide gas detection method and detection device thereof

Abstract

The invention relates to a trace sulfur dioxide gas concentration detection method and a detection device thereof, and the method comprises the following steps: absorbing a to-be-detected gas sample by an absorption liquid, determining the sulfur element content in the absorption liquid by using an inductively coupled plasma mass spectrometer, and finally calculating to obtain the sulfur dioxide content in the to-be-detected gas sample. The method is simple and convenient, low in detection limit, short in detection time and less in pollution hazard. The detection device comprises a gas pressure container for storing a to-be-detected gas sample, an absorption bottle for containing absorption liquid, a wet gas flowmeter for recording the flow of the to-be-detected gas sample, and a low-temperature device for providing a low-temperature absorption environment, the detection device disclosed by the invention is simple in structure, convenient to use and easy to operate, sulfur dioxide in the gas sample to be detected can be rapidly and fully absorbed, and the accuracy of a detection result is improved.

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