一、制定的必要性和意义飞行时间质谱仪是一种高分辨质谱仪,这类仪器的质量分析器是一个无场离子漂移管。由离子源产生的离子加速后进入无场离子漂移管,并以恒定速度飞向离子接收器。离子质荷比越大,到达接收器所用时间越长;质荷比越小,到达接收器所用时间越短,根据这一原理,可以把不同离子按质荷比的大小进行分离。飞行时间质谱仪具有检测分子量范围大、扫描速度快、仪器结构简单、价格便宜等优势,近年来在药物 First, the development of the necessity and significance of time-of-flight mass spectrometer is a high-resolution mass spectrometer, the quality analyzer of such instruments is a field-free ion drift tube. The ions generated by the ion source are accelerated into the field-free ion drift tube and fly toward the ion receiver at a constant rate. The larger the ion-to-charge ratio, the longer it takes to reach the receiver; the smaller the mass-to-charge ratio, the shorter the time it takes to reach the receiver. Depending on this principle, different ions can be separated by mass-to-charge ratio. Time-of-flight mass spectrometer has the advantages of large molecular weight detection range, fast scanning speed, simple structure and low price. In recent years,