01749naa a2200289 a 450000100080000000500110000800800410001902400510006010000250011124501230013626000090025952008550026865000150112365000160113865000210115465000310117565000160120665000180122265300330124065300270127370000200130070000210132070000170134170000150135870000200137377300660139321321292021-06-02       2021    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.1016/j.snb.2021.1299742DOI1 aBAIENSE, K. M. S. M.  aPhotoacoustic-based sensor for real-time monitoring of methane and nitrous oxide in composting.h[electronic resource]  c2021  aThe emission of greenhouse gases from disturbed biological systems has caused damage to the environment. Thus, sensitive, efficient and accurate techniques have been required to monitor these gases. In this article, the gas dynamics in the composting of an agricultural waste (horse manure and lettuce lefts) was studied. The progress of composting was accompanied by monitoring O2 and CO2 gases and temperature. The results showed that in the thermophilic phase the composting was predominantly aerobic. Photoacoustic spectroscopy was used throughout the process to monitor the dynamics of the greenhouse gases N2O and CH4. The technique was effective in identifying both gases, and when combined with the convolution approach using the absorption lines from the molecular spectroscopic database (HITRAN), it also allowed the quantification of them.  aComposting  aEnvironment  aGreenhouse gases  aPhotoacoustic spectroscopy  aCompostagem  aMeio Ambiente  aEspectroscopia Fotoacústica  aGases de Efeito Estufa1 aLINHARES, F. G.1 aINACIO, C. de T.1 aSTHEL, M. S.1 aVARGAS, H.1 aSILVA, M. G. da  tSensors and Actuators B: chemicalgv. 341, 129974, Aug. 2021.