Sensing System Research Center (SSRC), National Institute of Advanced Industrial Science and Technology (AIST), Tosu, Saga 841-0052, Japan.
Division of Biomaterials, Department of Oral Functions, Kyushu Dental University, Kita Kyushu, Fukuoka 803-8580, Japan.
ACS Sens. 2023 Jul 28;8(7):2514-2518. doi: 10.1021/acssensors.3c00719. Epub 2023 Jul 11.
Hydrocarbon (HC) monitoring is necessary for safe and effective operations in industries such as petroleum and gas. In this study, total hydrocarbons can be detected by using yttria-stabilized zirconia (YSZ)-based potentiometric-type gas sensor using MgFeO sensing electrode (SE). The sensor was found to generate a similar response magnitude to those of hydrocarbons that have the same carbon number, irrespective of the type of carbon bond (total hydrocarbon detection). Aside from being capable of detecting total hydrocarbons sensitively and selectively with rapid response time, the sensor using MgFeO-SE also exhibited a linear relationship between sensor responses and carbon number. In addition to that, the developed sensor showed a logarithmically linear relationship between sensor responses and HC concentration in the range 20-700 ppm. These sensing characteristics were confirmed to be reproducible, and sensor responses toward HC were found to be repeatable and gradually decreased with increasing in O concentration in the range of 3-21 vol %.
在石油和天然气等行业中，烃类（HC）监测对于安全有效地运行是必要的。在这项研究中，采用基于氧化钇稳定氧化锆（YSZ）的电势型气体传感器，利用 MgFeO 传感电极（SE）可以检测总碳氢化合物。该传感器对具有相同碳原子数的碳氢化合物产生相似的响应幅度，而与碳键类型无关（总碳氢化合物检测）。除了能够快速响应时间，灵敏和选择性地检测总碳氢化合物之外，使用 MgFeO-SE 的传感器还显示出传感器响应与碳原子数之间的线性关系。此外，开发的传感器在 20-700 ppm 的 HC 浓度范围内显示出传感器响应与 HC 浓度之间的对数线性关系。这些传感特性被证实是可重现的，并且发现传感器对 HC 的响应是可重复的，并且随着 O 浓度在 3-21 体积％范围内的增加而逐渐降低。
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