[Miniature quadrupole mass spectrometer array and its applications in manned spaceflight].

This paper explained the working method of the quadrupole mass spectrometer array and its features of volume, weight, power, sensitivity to many kinds of gases as well as flexibility when used together with a miniature gas chromatograph (GC) and a thermal-conductivity detector (TCD). Three types of structure formed in its development are also described. Finally, the applications of the quadrupole mass spectrometer array in the field of manned spaceflight were summarized.