This paper describes an experimental system for simultaneous permeation of a pressurized test gas through different gas permeable membranes and provides a proof of concept for a novel approach for gas identification/fingerprinting for potential construction of electronic noses. The design, construction, and use of a six-channel system which allows simultaneous gas permeation from a single pressurized gas compartment through six different parallel membranes are presented. The permeated gas is accumulated in confined spaces behind the respective membranes. The rate of gas pressure accumulation behind each membrane is recorded and used as a measure of the gas permeation rate through the membrane. The utilized gas permeable membranes include Teflon AF, silicone rubber, track-etch hydrophilic polycarbonate, track-etch hydrophobic polycarbonate, track-etch polyimide, nanoporous anodic aluminum oxide, zeolite ZSM-5, and zeolite NaY. An analogy between the rate of pressure accumulation of the permeating gas behind the membrane and the charging of an electric capacitor in a single series RC circuit is proposed and thoroughly validated. The simultaneous permeation rates through different membranes demonstrated a very promising potential as characteristic fingerprints for 10 test gases, that is, helium, neon, argon, hydrogen, nitrogen, carbon dioxide, methane, ethane, propane, and ethylene, which are selected as representative examples of mono-, di-, tri-, and polyatomic gases and to include some homologous series as well as to allow testing the potential of the proposed system to discriminate between closely related gases such as ethane and ethylene or carbon dioxide and propane which have almost identical molecular masses. Finally, a preliminary investigation of the possibility of applying the developed gas permeation system for semiquantitative analysis of the CO₂–N₂ binary mixture is also presented.

中文翻译：

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通过平行膜同时渗透进行气体识别：概念验证

本文描述了一种通过不同透气膜同时渗透加压测试气体的实验系统，并为潜在构建电子鼻的气体识别/指纹识别新方法提供了概念证明。介绍了六通道系统的设计、构造和使用，该系统允许气体从单个加压气体隔室同时渗透通过六个不同的平行膜。渗透的气体积聚在各个膜后面的密闭空间中。记录每个膜后面的气体压力累积速率并用作气体通过膜的渗透速率的量度。使用的透气膜包括 Teflon AF、硅橡胶、轨迹蚀刻亲水性聚碳酸酯、轨迹蚀刻疏水性聚碳酸酯、跟踪蚀刻聚酰亚胺、纳米多孔阳极氧化铝、沸石 ZSM-5 和沸石 NaY。提出并彻底验证了膜后渗透气体的压力积累速率与单个串联 RC 电路中电容器充电之间的类比。通过不同膜的同时渗透率显示出作为 10 种测试气体的特征指纹的非常有前景的潜力，即氦、氖、氩、氢、氮、二氧化碳、甲烷、乙烷、丙烷和乙烯，这些气体被选为代表单，二，三，的例子，和多原子气体，并包括一些同源系列，并允许测试所提出系统的潜力，以区分具有几乎相同分子量的乙烷和乙烯或二氧化碳和丙烷等密切相关的气体。最后，初步研究了应用所开发的气体渗透系统对 CO 进行半定量分析的可能性还介绍了₂ -N _{2二元混合物。}