The online detection of halogenated hydrocarbon in the atmosphere

A quantitative analysis method for LIBS methane detection based on C and CN line competition—MEWE-SC equation

“…To synchronize the detector with the Nd: YAG Laser, the time-delay controller connected between the Nd: YAG Laser and spectrometer acquisition was 1.5 us; the integral time of the spectrometer was 1 ms so that all the effective spectral signals could be captured by the spectrometer. 29,30…”

“…To synchronize the detector with the Nd: YAG Laser, the time-delay controller connected between the Nd: YAG Laser and spectrometer acquisition was 1.5 us; the integral time of the spectrometer was 1 ms so that all the effective spectral signals could be captured by the spectrometer. 29,30 Experimental method Experiments were divided into two modes: static detection and dynamic detection. Under static detection, the static spectrum…”

Photodissociation and formation of an ion‐pair in CH2FCl (HCFC‐31)

“…The rate constants for this reaction have been given by Atkinson et al in the temperature range 240-300 K. 14 Despite the scarcity of photochemical studies concerning HCFC-31, photodissociation have been employed to detect some halogenated hydrocarbons and freons. [15][16][17] The laser induced breakdown spectroscopy (LIBS), combined with the single particle aerosol mass spectrometry (SPAMS) have been used for the online detection of halogen lines due to the photodissociation of Halon 2402, Freon R11, iodomethane 15 and C 2 H 4 BrF 16 in the atmosphere. The time-of-flight mass spectrometry coupled with velocity map imaging technique has been used to study the multiphoton ionization and photodissociation dynamics of Freon-113 induced by femtosecond laser pulse.…”

“…Despite the scarcity of photochemical studies concerning HCFC‐31, photodissociation have been employed to detect some halogenated hydrocarbons and freons 15–17 . The laser induced breakdown spectroscopy (LIBS), combined with the single particle aerosol mass spectrometry (SPAMS) have been used for the online detection of halogen lines due to the photodissociation of Halon 2402, Freon R11, iodomethane 15 and C 2 H 4 BrF 16 in the atmosphere.…”

Mini Review: Advances in 2-Haloacid Dehalogenases

“…This is because these compounds do not degrade easily in natural environments because of their chemical stability, resulting in their environmental accumulation. Moreover, these compounds can become concentrated and accumulate in organisms through the food chain, with carcinogenic, teratogenic, and mutagenic effects (Fan et al, 2020;Lou Y. Y. et al, 2021;Zhang C. et al, 2021). This poses a serious threat to human health and has become an issue of concern all over the world (Artabe et al, 2020;Lou Y. Y. et al, 2021).…”