This review examines the use of amperometric electrochemical gas sensors for monitoring inorganic gases that affect urban air quality. First, we consider amperometric gas sensor technology including its development toward specifically designed air quality sensors. We then review recent academic and research organizations’ studies where this technology has been trialed for air quality monitoring applications: early studies showed the potential of electrochemical gas sensors when colocated with reference Air Quality Monitoring (AQM) stations. Spatially dense networks with fast temporal resolution provide information not available from sparse AQMs with longer recording intervals. We review how this technology is being offered as commercial urban air quality networks and consider the remaining challenges. Sensors must be sensitive, selective, and stable; air quality monitors/nodes must be electronically and mechanically well designed. Data correction is required and models with differing levels of sophistication are being designed. Data analysis and validation is possibly the biggest remaining hurdle needed to deliver reliable concentration readings. Finally, this review also considers the roles of companies, urban infrastructure requirements, and public research in the development of this technology.

中文翻译：

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安培气体传感器作为低成本新兴技术平台，用于空气质量监测应用：综述

这篇评论探讨了使用安培电化学气体传感器监测影响城市空气质量的无机气体的方法。首先，我们考虑电流型气体传感器技术，包括其向专门设计的空气质量传感器的发展。然后，我们回顾最近的学术和研究组织的研究，该技术已经在空气质量监测应用中进行了试验：早期研究表明，与参考空气质量监测（AQM）站并置时，电化学气体传感器的潜力。具有快速时间分辨率的空间密集网络可提供记录间隔较长的稀疏AQM无法获得的信息。我们回顾了如何将该技术作为商业城市空气质量网络提供，并考虑了剩余的挑战。传感器必须灵敏，选择性，稳定 空气质量监测器/节点必须在电子和机械方面进行精心设计。需要进行数据校正，并且正在设计具有不同复杂度的模型。数据分析和验证可能是提供可靠浓度读数所需的最大障碍。最后，本文还考虑了公司在技术开发中的作用，城市基础设施要求和公共研究。