Development of Large Mass Number Quadrupole Mass Spectrometer

Large mass number quadrupole mass spectrometer is mainly used for the detection of the trace toxic and harmful gases,and is one of the main analytical methods to ensure the safety of workers in closed environment.The article introduces the key parameters design analysis and the overall scheme design based on the design requirement of 1 to 1 024 amu molecular mass and 1amu mass resolution.The designed quadrupole mass spectrometer consists of two parts:analyzer and controller.At present,we have completed the development of the desktop principle prototype and the detailed design of the initial prototype.The test results show that mass rang covers the design index of 1 to 1 024 amu,and the best mass resolution can be less than 1amu.