The quadrupole mass analyzer functions as a mass filter by selecting ions with a specific m/z (mass-to-charge ratio) value for analysis. Although quadrupole mass spectrometers do not match sector magnetic field instruments in sensitivity, resolution,…

As the core component of the mass spectrometer, the quadrupole mass filter achieves ion screening through precise electric field control. The quadrupole is usually composed of four parallel metal rods, and two pairs of electrodes apply: direct curren…