本文介绍了用法拉第筒作为离子检测器的四极滤质器存在干扰电子流的原因。这种电子流对轻质量部分质谱的零输出基线起干扰作用,致使这部分谱峰的峰高不能很好地测量和记录。为消除这种现象,作者提出一种电子—离子分离器式离子检测器来代替常用的法拉第筒检测器,并取得了较好的效果。 This article describes the reason why a quadrupole mass filter with a Faraday cup as an ion detector has an interfering electron flow. This electron flow interferes with the zero-output baseline of the light-mass portion of the spectrum, causing the peak heights of this portion of the spectrum to be poorly measured and recorded. In order to eliminate this phenomenon, the author proposed an ion detector ion-ion detector instead of the commonly used Faraday bar detector, and achieved good results.