Germany's Pu FaPfeifferGas analysis mass spectrometerOmnistarSuccessfully applied in the experiment of gas-phase photolysis and photocatalytic reaction for environmental pollution control at a university in Shanghai

With the increasingly prominent environmental pollution, air quality issues have become a focus. The catalytic group of a university in Shanghai has made significant progress in the removal of organic pollutants from the air using photocatalytic oxidation technology, combined with the German Pfeiffer gas analysis mass spectrometer Omnistar sold by Bodong Company.

Analysis method: Volatile organic compound vapor is subjected to vacuum static gas distribution, which means that the reactor is first evacuated and the organic liquid is injected into the reactor. After it is completely vaporized, air is introduced and mixed. Then, a gas-phase photocatalytic reaction is carried out, and the vapor and gas concentrations during the reaction process are continuously sampled and analyzed using the German Pfeiffer gas mass spectrometer Omnistar.
Bodong Company is a designated supplier of Pfeiffer products from Germany for a university in Shanghai.

Customer case: A catalytic group at a university in Shanghai is equipped with one Pfeiffer gas analysis mass spectrometer OmnistarTM
Pfeiffer gas analysis mass spectrometer Omnistar^TMSeries mass spectrometer equipment equipped with Quadstar^TMThe 422 analysis software is easy to operate, powerful, and can generate user specific application software interfaces. With the support of parameter settings, multiple measurement methods, spectrum library, data statistics, spectrum enlargement, cursor, input and output modules, qualitative and quantitative analysis as well as online and offline analysis can be more conveniently conducted.

The customer uses the Pfeiffer gas mass spectrometer Omnistar to analyze the reactants and CO during the reaction process₂The concentration was quantitatively monitored. The gas-phase photolysis and photocatalytic reactions of trichloroethylene, acetone, benzene, toluene, dichloromethane, trichloromethane, and carbon tetrachloride were studied, and the photolysis and photocatalytic characteristics of different substances were compared. Further in-depth research is needed on the basic principles and kinetics of the oxidation processes of different substances. Monitoring results show that trichloroethylene can be rapidly photolysis under 253.7 nm ultraviolet light, and the reaction produces CO₂Toluene and acetone vapors can also undergo photolysis, but do not produce CO₂In air medium, except for CCI₄In addition, several other organic compounds can be degraded by photocatalysis.