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近几年来,光离子化检测器(Photoionization Detector,简称PID)的性能不断改进和完善,又为气相色谱在化学、生物学、医学、环境保护以及其它科学技术领域的应用,提供了新的、有效的检测手段。在1960年,Lovelock曾发表关于离子化检测器的论述,除氢火焰离子化检测器、截面积离子化检测器、电子捕获检测器之外,也提出了光离子化检测器(PID)。离子化检测器的基本原理,都是致使物质离子化,测定形成的离子流,进行色谱检出和定量测定。各种离子化检测器的离子化途径,则是互不相同的。在PID中,使用紫外光的辐射能,进行样品组份的激发电离,收集、放大和测定所形成的离子流,进行气相色谱的定性和定量。
In recent years, the performance of Photoionization Detector (PID) has been continuously improved and perfected, and it has provided a new, new and improved method for the application of gas chromatography in chemistry, biology, medicine, environmental protection and other fields of science and technology. Effective detection means. In 1960 Lovelock published an exposition of ionization detectors, in addition to hydrogen flame ionization detectors, cross-sectional area ionization detectors, and electron capture detectors, and photoionization detectors (PIDs). The basic principle of ionization detector, are caused by material ionization, the determination of the formation of ion flux, chromatographic detection and quantitative determination. Various ionization detector ionization pathways are different from each other. In the PID, the energy of the UV light is used to excite and ionize the sample components, collecting, amplifying and measuring the resulting ion current for qualitative and quantitative gas chromatography.