Monitoring of peroxy radicals by chemical amplification enhanced photoacoustic spectroscopy

Gaoxuan Wang,Ahmad Lahib,Marius Duncianu,Qian Gou,Philip S. Stevens,Sebastien Dusanter,Alexandre Tomas,Markus W. Sigrist,Weidong Chen

2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS EUROPE & EUROPEAN QUANTUM ELECTRONICS CONFERENCE (CLEO/EUROPE-EQEC)（2021）

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摘要

Peroxy radicals (HO 2 +RO 2 ) are crucial intermediates in many key atmospheric processes and contribute to the formation of major air pollutants, such as ozone and secondary organic aerosols 1 . Due to their high reactivity and their extremely low concentrations (typically <100 pptv), in-situ real time and interference-free measurements of peroxy radicals remain challenging.

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关键词

peroxy radicals,chemical amplification,secondary organic aerosols,key atmospheric processes,photoacoustic spectroscopy

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