Theoretical investigation on the reaction mechanism of ozone with chlorine, bromine and iodine atoms

Nandi, Gargi; Naskar, S.; Ghosh, Tapas

doi:10.1016/j.comptc.2021.113410

Cited by 3 publications

(1 citation statement)

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“…Sodium sulfate (Na2S2O3) reacts with free iodine to generate sodium iodide (NaI). Therefore, the concentration of O3 can be obtained by calculating the consumption of Na2S2O3 [3,4]. The colorimetric method is based on observing the changes in concentrations of chemical reagents by spectroscopic measurements [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Ozone detection based on an nitrogen oxide photoacoustic spectroscopy system and chemical reaction

Huawei Jin,

Haitao Ji,

Haowei Wang

et al. 2023

Environ. Protect. Eng.

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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 NO2 and the differential detection method, a dual-channel PAS system for O3 detection is reported. The consistency of NO2 detection with the dual-channel photoacoustic spectroscopy system is good by contrast. The coefficient of determination R 2 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 (R 2 ) 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 O3 using the dual-channel cavity photoacoustic spectroscopy technique was deployed. These observations indicate that O3 concentrations can be effectively observed with the dual-channel PAS instrument.

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Section: Introductionmentioning

confidence: 99%