Application of a Solid Electrolyte CO2 Sensor for the Analysis of Standard Volatile Organic Compound Gases
Application of a Solid Electrolyte CO2 Sensor for the Analysis of Standard Volatile Organic Compound Gases
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DOI：
10.1021/ac100123u
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发表时间：
2010-04-15
影响因子：
7.4
通讯作者：
Shimanoe, Kengo
中科院分区：
文献类型：
--
作者：
Kida, Tetsuya;Seo, Min-Hyun;Shimanoe, Kengo
在开发和评估检测挥发性有机化合物的分析方法或仪器的性能时，需要制备和分析标准VOC（挥发性有机化合物）气体。在这项研究中，我们设计并开发了一个简单的系统，用于基于燃烧催化剂分解成二氧化碳的挥发性有机化合物的分析，以及随后使用固体电解质二氧化碳传感器进行检测。在该传感器中，分别以NASICON （Na3Si2Zr2PO4； Na+导体）和二元碳酸盐（Li2CO3-BaCO3）作为固体电解质和传感层。该系统被证明可以有效地测定标准气体的浓度，包括挥发性有机化合物（乙醇、甲醛和甲苯）、一氧化碳和百万分之一（10- 500ppm）的碳氢化合物。该系统还可以连续监测液体乙醇在25℃和50℃加热的扩散法制备的乙醇蒸气的变化，并讨论了该分析系统的优点和局限性。
Preparation and analysis of standard VOC (volatile organic compound) gases are needed when developing and evaluating the performance of analytical methods or instruments to detect VOCs. In this study, we designed and developed a simple system for the analysis of VOCs based on their decomposition into CO2 by a combustion catalyst and their subsequent detection using a solid electrolyte CO2 sensor. In this sensor, NASICON (Na3Si2Zr2PO4; Na+ conductor) and binary carbonate (Li2CO3-BaCO3) were used as the solid electrolyte and the sensing layer, respectively. This developed system proved to be effective in determining the concentrations of standard gases, including VOCs (ethanol, formaldehyde, and toluene), CO, and hydrocarbons in parts per million concentrations (10-500 ppm). The system also could continuously monitor the variations in ethanol vapors prepared by a diffusion method where liquid ethanol was heated at 25 and 50 degrees C. The advantages and limitations of our developed analytical system are also discussed.