Journal
CHINESE JOURNAL OF CHEMICAL PHYSICS
Volume 26, Issue 2, Pages 133-139Publisher
CHINESE PHYSICAL SOC
DOI: 10.1063/1674-0068/26/02/133-139
Keywords
Incoherent broadband cavity enhanced absorption spectroscopy; Near-ultraviolet; OClO; CH2O
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Funding
- National Natural Science Foundation of China [41005017]
- Instrument Developing Project of the Chinese Academy of Sciences [YZ201121]
- Jiangsu Provincial Natural Science Foundation of China [BK2011829]
- Open Research Fund of Key Laboratory of Atmospheric Composition and Optical Radiation
- Groupement de Recherche International SAMIA
- CAS (Chinese Academy of Sciences, China)
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Chlorine dioxide (OClO) is an important indicator for Cl-activation. The monitoring of OClO appears to be crucial for understanding the chemistry of Cl-initialed oxidation and its impact on air quality in polluted coastal regions and industrialized areas. We report the development of a Xe arc lamp based near-ultraviolet (335-375 nm) incoherent broadband cavity enhanced absorption spectroscopy (IBBCEAS) spectrometer for quantitative assessment of OClO in an atmospheric simulation chamber. The important intermediate compound CH2O, and other key atmospheric trace species (NO2) were also simultaneously measured. The instrumental performance shows a strong potential of this kind of IBBCEAS instrument for field and laboratory studies of atmospheric halogen chemistry.
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