Rate Constants for the Gas-Phase Reactions of the OH Radical with Dichlorobiphenyls, 1-Chlorodibenzo-p-dioxin, 1,2-Dimethoxybenzene, and Diphenyl Ether: Estimation of OH Radical Reaction Rate Constants for PCBs, PCDDs, and PCDFs

Modeling study of polychlorinated dibenzo-p-dioxins and dibenzofurans behavior in flue gases under electron beam irradiation

“…According to their results, the addition of the OH radical into the PCDD molecule under atmospheric conditions should be more favorable than the substitution or H abstraction. The magnitudes of the rate constants were in good agreement with the room temperature structure-reactivity calculations of Atkinson (1991) and Kwok et al (1995) based on the electrophilic constants. At elevated temperatures (500 K < T < 1000 K), the OH radicals react with aromatic compounds initially through H abstraction rather than OH addition into the benzene ring (Atkinson, 1986).…”

“…The OH radicals, which are formed in the flue gases under the EB irradiation and play an important role in radiation induced oxidation of main harmful admixtures in wet gaseous mixture, are also the main active components responsible for decomposition of PCDD/Fs molecules (Atkinson, 1991;Kwok et al, 1995). Brubaker and Hites (1998) have carried out experiments to measure the OH radical rate constants k OH for polycyclic aromatic hydrocarbons and dioxin congeners.…”

Degradation of gaseous dioxin-like compounds with dielectric barrier discharges

“…Around 74% PCDDs and 89% PCDFs based on mass can be destroyed as the water vapor content was 20%. In general, highly chlorinated PCDD/F congeners are of more stable structures compared with lowly chlorinated congeners [32,33]. However, from the results presented in Figs.…”

Spatial and temporal variation, source profile, and formation mechanisms of PCDD/Fs in the atmosphere of an e‐waste recycling area, South China

“…More intense solar radiation and higher temperatures in summer can result in a greater photochemical reaction, which results in more gaseous PCDD loss in summer than in winter. The PCDFs are less chemically stable than PCDDs and thus may degrade more quickly, resulting in a higher photolysis rate in the particulate matter . However, we found a good linear relationship between 2378‐PCDFs and OC concentrations in summer.…”