An Interface with a Linear Quadrupole Ion Guide for an Electrospray-Ion Trap Mass Spectrometer System

摘要: A new ion sampling interface for an electrospray ionization 3D trap mass spectrometer system is described. The uses linear rf quadrupoles as guides and traps to enhance the performance of trap. Trapping ions in demonstrated improve duty cycle system. Dipolar excitation trapped a quadrupole used eject unwanted ions. resolution ejection up 254 protonated reserpine (m/z 609.3). composite waveform with notch frequency space wide range matrix isolate trace analyte before are injected into This useful overcome charge problems caused by excess For 500-fold molar poly(propylene glycol) (PPG), it that sensitivity can be increased dramatically PPG In comparison similar broad-band waveform, 5-fold increase 7 times shorter acquisition time was achieved.