Ion transmission in the quadrupole mass-analyzer with prefilters depending on ion mass

Ion transmission levels through a small quadrupole mass-analyzer with prefilters depending on the mass of the developed ion were determined experimentally. The results of mass spectrum records of perfluorotrinutylamine within the mass number of 69-502 u at R0.1 = M in conditions of the mass-analyzer in question showed that transmission is in within 10-20 % from 100 % of the transmission, and on mass 69 u transmission level makes ~ 20 %, and on mass 502 u ~ 10 %. Dependence of transmission on ion mass for all the specified intervals of mass numbers at R0.1 = M was obtained.