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A low-maintenance optoacoustic sensor for black carbon monitoring.
Atmos. Meas. Tech. 19, 3111-3122 (2026)
Regulation of black carbon (BC) emissions is necessary due to their negative impact to climate and human health. We present a low-cost optoacoustic sensor for Black Carbon (BC) emissions, which can provide continuous measurements that are suitable for long-term BC monitoring in highly contaminative environments with low need for frequent maintenance. Insensitivity to contamination is based on a sensor design that integrates protective flows of clean air around the sample measured, which minimizes BC deposition on the detector and optical windows of the sensor. A quantitative analysis shows that the negative effect of BC contamination on sensor performance is reduced by a factor of greater than 300 000 in comparison to an unprotected control sensor. We discuss how the reduced maintenance requirements make the design presented a promising candidate for continuous and long-term BC monitoring of high emitters, enabling disseminated monitoring necessary for regulatory and mitigation measures of BC emissions in the future.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Aerosol; Aethalometer; Instrument; Absorption; Emissions
ISSN (print) / ISBN
1867-1381
e-ISSN
1867-8548
Quellenangaben
Volume: 19,
Issue: 9,
Pages: 3111-3122
Publisher
European Geosciences Union (EGU) ; Copernicus
Publishing Place
Bahnhofsallee 1e, Gottingen, 37081, Germany
Reviewing status
Peer reviewed
Institute(s)
Institute of Biological and Medical Imaging (IBMI)
Grants
Horizon 2020