Low-Cost Nitric Oxide Sensors: Assessment of Temperature and Humidity Effects

ABSTRACT: High equipment cost is a significant entry barrier to research for small organizations in developing solutions to air pollution problems. Low-cost electrochemical sensors show sensitivity at parts-per-billion by volume mixing ratios but are subject to variation due to changing environmental conditions, in particular temperature. In this study, we demonstrate a low-cost Internet of Things (IoT)-based sensor system for nitric oxide analysis. The sensor system used a four-electrode electrochemical sensor exposed to a series of isothermal/isohume conditions. When deployed under these conditions, stable baseline responses were achieved, in contrast to ambient air conditions where temperature and humidity conditions may be variable. The interrelationship between working and auxiliary electrodes

SUBMITTER: Owen S 

PROVIDER: S-EPMC9699606 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature