This paper presents a new scheme for readout of a photoionization detector (PID) that utilizes the ionization luminescence of target gases in helium plasma to generate an output signal. Our signal readout method is based on processing the recorded video and correlating the light peak intensity with the sample injection time and concentration. We successfully demonstrated the feasibility of a colorimetric readout-based photoionization detector coupled with a gas chromatography column by detecting a mixture of non-polar compounds (alkanes) and two polar compounds (acetone and ethanol). The detection limit for our first-generation device was calculated to be ~118 ng for acetone and around 26 ng for ethanol. © 2024 Institute of Electrical Engineer of Japan and Wiley Periodicals LLC.

中文翻译：

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用于气相色谱仪的基于比色读数的光电离检测器

本文提出了一种光电离检测器 (PID) 读出的新方案，该方案利用氦等离子体中目标气体的电离发光来生成输出信号。我们的信号读出方法基于处理记录的视频并将光峰强度与样品注射时间和浓度相关联。我们通过检测非极性化合物（烷烃）和两种极性化合物（丙酮和乙醇）的混合物，成功证明了基于比色读出的光电离检测器与气相色谱柱结合的可行性。我们第一代设备的丙酮检测限计算为约 118 ng，乙醇检测限约为 26 ng。 © 2024 日本电气工程师协会和 Wiley periodicals LLC。