期刊
ANALYTICAL SCIENCES
卷 33, 期 4, 页码 519-524出版社
JAPAN SOC ANALYTICAL CHEMISTRY
DOI: 10.2116/analsci.33.519
关键词
Nitrous acid; incoherent broadband cavity enhanced absorption spectroscopy (IBBCEAS); in situ measurements
资金
- JSPS KAKENHI [26740005]
- Grants-in-Aid for Scientific Research [26740005, 16H06305, 17K00525] Funding Source: KAKEN
Incoherent broadband cavity-enhanced absorption spectroscopy (IBBCEAS) is a useful technique for measuring trace gaseous species in the atmosphere. Recently, IBBCEAS was used to measure concentrations of nitrous acid (HONO) in the troposphere to resolve controversies related to its formation and loss. Here, measurements of HONO and a mixture of HONO and NO2 using IBBCEAS were validated by comparing them with those obtained with a NOx analyzer. Good agreement was found between these methods, given their respective experimental uncertainties. The detection limit of our IBBCEAS instrument was 0.2 ppbv, with a signal-to-noise ratio of 1, and a 5-min integration time.
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