质谱计的灵敏度的稳定性或我国四极质谱计采用的峰强稳定性指标是考核仪器整机稳定性的主要指标。引起灵敏度不稳定的原因有两个,一是电子线路和质谱管电极本身性能的不稳定,另一个是离子源中电极系统的温度不平衡。前者产生的不 The sensitivity of the mass spectrometer or the stability of the peak quadrupole mass spectrometer used in our country is the main indicator of the stability of the whole instrument. Sensitivity instability caused by two reasons, first, the performance of the electronic circuit and the tube electrode itself instability, and the other is the ion source electrode system temperature imbalance. The former does not produce