Electronic Nose for Improved Environmental Methane Monitoring

Domènech-Gil, Guillem,Mr. DoctorLinköpings universitet,Tema Miljöförändring,Filosofiska fakulteten (author)

Funding: Swedish Research Council FORMAS [2018-01794]; Swedish Research Council (Vetenskapsradet) [2016-04829, 2022-03841, 2021-0016, 725546]; European Research Council under the European Union [2017-00635]; Swedish Infrastructure for Ecosystem Science (SITES); Program SITES Water
Reducing emissions of the key greenhouse gas methane (CH4) is increasingly highlighted as being important to mitigate climate change. Effective emission reductions require cost-effective ways to measure CH4 to detect sources and verify that mitigation efforts work. We present here a novel approach to measure methane at atmospheric concentrations by means of a low-cost electronic nose strategy where the readings of a few sensors are combined, leading to errors down to 33 ppb and coefficients of determination, R-2, up to 0.91 for in situ measurements. Data from methane, temperature, humidity, and atmospheric pressure sensors were used in customized machine learning models to account for environmental cross-effects and quantify methane in the ppm-ppb range both in indoor and outdoor conditions. The electronic nose strategy was confirmed to be versatile with improved accuracy when more reference data were supplied to the quantification model. Our results pave the way toward the use of networks of low-cost sensor systems for the monitoring of greenhouse gases.

Nguyen, Thanh Duc,1980-Linköpings universitet,Tema Miljöförändring,Tekniska fakulteten(Swepub:liu)thang92 (author)
Wikner, Jacob,1973-Linköpings universitet,Elektroniska Kretsar och System,Tekniska fakulteten(Swepub:liu)jacwi50 (author)
Eriksson, Jens,1979-Linköpings universitet,Sensor- och aktuatorsystem,Tekniska fakulteten,Sensor and Actuator Systems(Swepub:liu)jener58 (author)
Nilsson Påledal, SörenTekn Verken & Linkoping AB, S-58115 Linkoping, Sweden (author)
Puglisi, Donatella,1980-Linköpings universitet,Sensor- och aktuatorsystem,Tekniska fakulteten(Swepub:liu)donpu97 (author)
Bastviken, David,Professor,1971-Linköpings universitet,Tema Miljöförändring,Filosofiska fakulteten(Swepub:liu)davba48 (author)
Linköpings universitetTema Miljöförändring (creator_code:org_t)

In:Environmental Science and Technology: AMER CHEMICAL SOC58, s. 352-3610013-936X1520-5851

By the author/editor: Domènech-Gil, Gu ...; Nguyen, Thanh Du ...; Wikner, Jacob, 1 ...; Eriksson, Jens, ...; Nilsson Påledal, ...; Puglisi, Donatel ...; show more...; Bastviken, David ...; show less...

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