绪言图象显示和基于计算机取得数据系统之间存在着差距。最近叙述了使用质谱的某些低费用系统。GCMS(气相色谱——质谱)的结合对数据获得来说仍然是依赖于图象显示或者依赖于基于计算机系统。对GCMS工作的主要要求: 1.要有完整的色谱蜂。 2.质谱的自动起动正好在色谱峰的转换之前。 3.质谱的规格化是对瞬时离子电流的总和而言的。 4.测量物质波峰的高度。 5.较多的处理方法是以数据形式来记录结果的。这种基本系统包含有数字积分器、质谱触发器、物质波峰的规格化和测量电路以及数字 Introduction There is a gap between image display and computer-based data acquisition. Recently, some low-cost systems that use mass spectrometry have been described. The combination of GCMS (Gas Chromatography-Mass Spectrometry) still depends on the image display for the data acquisition or on the computer based system. The main requirements for GCMS work: 1. To have a complete chromatography bee. 2. Automated mass spectrometry starts just before the conversion of the chromatographic peak. Mass spectrometry is normalized to the sum of instantaneous ion currents. 4. Measure the height of the material peak. 5. More treatment is recorded in the form of data results. This basic system includes a digital integrator, a mass spectrum trigger, a normalization and measurement circuit for material peaks and a digital