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Article Dans Une Revue Analytical Chemistry Année : 2023

Novel Broadband Cavity-Enhanced Absorption Spectrometer for Simultaneous Measurements of NO2 and Particulate Matter

Résumé

A novel instrument based on broadband cavity-enhanced absorption spectroscopy has been developed using a supercontinuum broadband light source, which showcases its ability in simultaneous measurements of the concentration of NO2 and the extinction of particulate matter. Side-by-side intercomparison was carried out with the reference NOx analyzer for NO2 and OPC-N2 particle counter for particulate matter, which shows a good linear correlation with r2 > 0.90. The measurement limits (1σ) of the developed instrument were experimentally determined to be 230 pptv in 40 s for NO2 and 1.24 Mm−1 for the extinction of particulate matter in 15 s. This work provides a promising method in simultaneously monitoring atmospheric gaseous compounds and particulate matter, which would further advance our understanding on gas−particle heterogeneous interactions in the context of climate change and air quality.
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Dates et versions

hal-04031766 , version 1 (16-03-2023)

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Gaoxuan Wang, Lingshuo Meng, Qian Gou, Benjamin Hanoune, Suzanne Crumeyrolle, et al.. Novel Broadband Cavity-Enhanced Absorption Spectrometer for Simultaneous Measurements of NO2 and Particulate Matter. Analytical Chemistry, 2023, Analytical Chemistry, 95 (6), pp.3460-3467. ⟨10.1021/acs.analchem.2c05237⟩. ⟨hal-04031766⟩
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