微粒
化学
超连续谱
背景(考古学)
分光计
吸收(声学)
粒子(生态学)
分析化学(期刊)
环境化学
光学
物理
古生物学
海洋学
有机化学
生物
光子晶体光纤
地质学
纤维
作者
Guowu Zhang,Lingshuo Meng,Qian Gou,Benjamin Hanoune,Suzanne Crumeyrolle,J.-B. Brubach,Rony Akiki,Weidong Chen,Cécile Coeur-Tourneur
标识
DOI:10.1021/acs.analchem.2c05237
摘要
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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