TY - GEN
T1 - Method of Experimental Evaluation of MOx Sensors for Real-Time Indoor VOCs Monitoring
AU - Guo, Xin
AU - Guo, Bing Beverly
AU - Liu, Zhenlei
AU - Shen, Jialei
AU - Love, Daniel
AU - McKinney, Peter J.
AU - Zhang, Jianshun “Jensen”
N1 - Publisher Copyright:
© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.
PY - 2025
Y1 - 2025
N2 - This study is specifically aimed at evaluating commercially available metal oxide (MOx) sensors for real-time monitoring of volatile organic compounds (VOCs) in typical indoor environments. To evaluate MOx sensors’ performance, we used a 50 L environmental chamber system to provide a well-controlled testing environment. The VOC types and test concentrations were based on relevant indoor air quality (IAQ) standards and guides in the literature. Test VOCs included toluene, formaldehyde, m-Xylene, phenol, benzene, naphthalene, acetaldehyde, acetone, dichloromethane, tetrachloroethylene, 1,1,1-trichloroethane. The evaluation tests are categorized into individual VOC tests, mixture VOCs tests, temperature and relative humidity dependence tests, short-term stability tests, and long-term drifting tests to investigate the sensitivity to specific VOC, mixture co-influence under realistic condition, moisture compensation, and reliability. This paper focuses on the procedures and results of the toluene test, identifying necessary improvements in the algorithm through comparisons between raw signals and TVOC readings. Results of this study will help provide guidance on the selection and utilization of MOx VOC sensors for VOC monitoring and IAQ control.
AB - This study is specifically aimed at evaluating commercially available metal oxide (MOx) sensors for real-time monitoring of volatile organic compounds (VOCs) in typical indoor environments. To evaluate MOx sensors’ performance, we used a 50 L environmental chamber system to provide a well-controlled testing environment. The VOC types and test concentrations were based on relevant indoor air quality (IAQ) standards and guides in the literature. Test VOCs included toluene, formaldehyde, m-Xylene, phenol, benzene, naphthalene, acetaldehyde, acetone, dichloromethane, tetrachloroethylene, 1,1,1-trichloroethane. The evaluation tests are categorized into individual VOC tests, mixture VOCs tests, temperature and relative humidity dependence tests, short-term stability tests, and long-term drifting tests to investigate the sensitivity to specific VOC, mixture co-influence under realistic condition, moisture compensation, and reliability. This paper focuses on the procedures and results of the toluene test, identifying necessary improvements in the algorithm through comparisons between raw signals and TVOC readings. Results of this study will help provide guidance on the selection and utilization of MOx VOC sensors for VOC monitoring and IAQ control.
KW - Evaluation Approach
KW - Metal Oxide
KW - VOC Sensors
UR - http://www.scopus.com/inward/record.url?scp=85214103038&partnerID=8YFLogxK
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U2 - 10.1007/978-981-97-8317-5_36
DO - 10.1007/978-981-97-8317-5_36
M3 - Conference contribution
AN - SCOPUS:85214103038
SN - 9789819783168
T3 - Lecture Notes in Civil Engineering
SP - 245
EP - 251
BT - Multiphysics and Multiscale Building Physics - Proceedings of the 9th International Building Physics Conference IBPC 2024
A2 - Berardi, Umberto
PB - Springer Science and Business Media Deutschland GmbH
T2 - 9th International Building Physics Conference, IBPC 2024
Y2 - 25 July 2024 through 27 July 2024
ER -