- Tytuł:
- Ozone detection based on an nitrogen oxide photoacoustic spectroscopy system and chemical reaction
- Autorzy:
-
Jin, Huawei
Ji, Haitao
Wang, Haowei
Li, Shuo - Powiązania:
- https://bibliotekanauki.pl/articles/28407430.pdf
- Data publikacji:
- 2023
- Wydawca:
- Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
- Tematy:
-
photoacoustic spectroscopy
nitric oxide
ozone
differential detection
spektroskopia fotoakustyczna
tlenek azotu
ozon
dedekcja różnicowa - Opis:
- Ozone is known as a “god-given purifying agent”, and its quantitative detection is of great significance. A low-cost photoacoustic spectroscopy (PAS) which is based on absorption at the low-power blue diode emitting at 403.65 nm has been used for nitrogen oxide (NO2) concentration measurements. According to the formula of nitric oxide (NO) reaction and ozone (O3) production of NO2and the differential detection method, a dual-channel PAS system for O3 detection is reported. The consistency of NO2detection with the dual-channel photoacoustic spectroscopy system is good by contrast. The coefficient of determination R2 can still reach 0.846. An intercomparison between the system and a cavity ring-down system (CRDS) was shown to verify the accuracy. The results showed a linear correction factor (R2) of 0.943 in a slope of 0.862±0.002, with an offset of (0.773±0.128) ppb. In addition, the measurement of 3using the dual-channel cavity photoacoustic spectroscopy technique was deployed. These observations indicate that 3concentrations can be effectively observed with the dual-channel PAS instrument.
- Źródło:
-
Environment Protection Engineering; 2023, 49, 4; 73--87
0324-8828 - Pojawia się w:
- Environment Protection Engineering
- Dostawca treści:
- Biblioteka Nauki
Artykuł