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Visualising household air pollution: colorimetric sensor arrays for monitoring volatile organic compounds indoors

Authors :
Duffy, Emer
Huttunen, Kati
Lahnavik, Roosa
Smeaton, Alan F.
Morrin, Aoife
Duffy, Emer
Huttunen, Kati
Lahnavik, Roosa
Smeaton, Alan F.
Morrin, Aoife
Source :
Duffy, Emer ORCID: 0000-0003-4557-6487 <
Publication Year :
2021

Abstract

Indoor air quality monitoring as it relates to the domestic setting is an integral part of human exposure monitoring and health risk assessment. Hence there is a great need for easy to use, fast and economical indoor air quality sensors to monitor the volatile organic compound composition of the air which is known to be significantly perturbed by the various source emissions from activities in the home. To meet this need, paper-based colorimetric sensor arrays were deployed as volatile organic compound detectors in a field study aiming to understand which activities elicit responses from these sensor arrays in household settings. The sensor array itself is composed of pH indicators and aniline dyes that enable molecular recognition of carboxylic acids, amines and carbonyl-containing compounds. The sensor arrays were initially deployed in different rooms in a single household having different occupant activity types and levels. Sensor responses were shown to differ for different room settings on the basis of occupancy levels and the nature of the room emission sources. Sensor responses relating to specific activities such as cooking, cleaning, office work, etc were noted in the temporal response. Subsequently, the colorimetric sensor arrays were deployed in a broader study across 9 different households and, using multivariate analysis, the sensor responses were shown to correlate strongly with household occupant activity and year of house build. Overall, this study demonstrates the significant potential for this type of simple approach to indoor air pollution monitoring in residential environments.

Details

Database :
OAIster
Journal :
Duffy, Emer ORCID: 0000-0003-4557-6487 <
Notes :
application/pdf, Duffy, Emer ORCID: 0000-0003-4557-6487 , Huttunen, Kati ORCID: 0000-0002-4888-9203 , Lahnavik, Roosa, Smeaton, Alan F. ORCID: 0000-0003-1028-8389 and Morrin, Aoife ORCID: 0000-0002-3031-4794 (2021) Visualising household air pollution: colorimetric sensor arrays for monitoring volatile organic compounds indoors. PLoS ONE, 16 (10). ISSN 1932-6203, English
Publication Type :
Electronic Resource
Accession number :
edsoai.on1376897748
Document Type :
Electronic Resource