基于介质阻挡放电离子源的温控系统设计及应用

Design and Application of the Temperature Control System Based on Dielectric Barrier Discharge Ionization

为了提高1,1-二苯乙烯和咖啡因样品检测精度,通过硬件电路设计开发出介质阻挡放电离子源温度控制系统,该系统具有测量精度高,响应速度快等特点,可以实现可靠的样品离子化温度条件影响分析和温度重复定位实验。新系统与质谱联用对咖啡因样品进行九次重复检测实验,重复性CV=1.5%,达到国际先进水平,适合在环境检测、食品安全以及科学研究等领域推广使用。

In order to improve the detection precision of 1,1-stilbene and caffeine samples, a temperature control system based on dielectric barrier discharge ion source was designed and developed on the hardware circuit, which has features of high measurement precision and fast response speed and realizes reliable samples analysis of ionization temperature conditions and temperature repeated positioning experiment. Nine repeated testing experiments on caffeine samples were conducted by means of the novel system and mass spectrometry with the repeatability CV=1.5%, reaching the international advanced level. The system is suitable for the promotion and application in fields of the environment testing, food safety and scientific research.