SIGNAL DENOISING METHODS FOR A CHARGE DETECTION FREQUENCY-SCAN/VOLTAGE-SCAN QUADRUPOLE/LINEAR/RECTILINEAR ION TRAP MASS SPECTROMETER

摘要

A signal denoising method for a frequency-scan ion trap mass spectrometer includes reading a signal raw data array observed in the spectrometer. The signal raw data array is processed by Boxcar averaging method to obtain a first signal array. Then the first signal array is processed by a harmonic interference cancellation method to obtain a second data array. Next the second signal array is processed by a radio frequency interference reduction method and a third signal array without the background induced from driving voltage of ion trap is reconstructed according to the second signal array.