School of Earth Sciences and Environmental Engineering, Gwangju
Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu,
Gwangju 61005, South Korea
School of Earth Sciences and Environmental Engineering, Gwangju
Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu,
Gwangju 61005, South Korea
School of Earth Sciences and Environmental Engineering, Gwangju
Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu,
Gwangju 61005, South Korea
School of Earth Sciences and Environmental Engineering, Gwangju
Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu,
Gwangju 61005, South Korea
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We describe our vibration-resistant instrument for measuring ambient NO3, NO2, and H2O based on cavity-enhanced absorption spectroscopy. By simultaneous retrieval of H2O with the other species using a measured H2O absorption spectrum, direct quantifications among all species are possible without any pre-treatment for H2O. Our instrument achieves the effective light path to ~101.5 km, which allows the sensitive measurements of NO3 and NO2 as 1.41 pptv and 6.92 ppbv (1σ) in 1 s.
We describe our vibration-resistant instrument for measuring ambient NO3, NO2, and H2O based on...
