Organic iodine compounds in fine particulate matter from a continental urban region: Insights into secondary formation in the atmosphere was written by Shi, Xiaodi;Qiu, Xinghua;Chen, Qi;Chen, Shiyi;Hu, Min;Rudich, Yinon;Zhu, Tong. And the article was included in Environmental Science & Technology in 2021.Related Products of 5460-32-2 This article mentions the following:
Atm. iodine chem. can significantly affect the atm. oxidation capacity in certain regions. In such processes, particle-phase organic iodine compounds (OICs) are key reservoir species in their loss processes. However, their presence and formation mechanism remain unclear, especially in continental regions. Using gas chromatog. and time-of-flight mass spectrometry coupled with both electron capture neg. ionization and electron impact sources, this study systematically identified unknown OICs in 2-yr samples of ambient fine particulate matter (PM2.5) collected in Beijing, an inland city. We determined the mol. structure of 37 unknown OICs, among which six species were confirmed by reference standards The higher concentrations for ∑37OICs (median: 280 pg m-3; range: 49.0-770 pg m-3) measured in the heating season indicate intensive coal combustion sources of atm. iodine. 1-Iodo-2-naphthol and 4-iodoresorcinol are the most abundant species mainly from primary combustion emission and secondary formation, resp. The detection of 2- and 4-iodoresorcinols, but not of iodine-substituted catechol/hydroquinone or 5-iodoresorcinol, suggests that they are formed via the electrophilic substitution of resorcinol by hypoiodous acid, a product of the reaction of iodine with ozone. This study reports isomeric information on OICs in continental urban PM2.5 and provides valuable evidence on the formation mechanism of OICs in ambient particles. In the experiment, the researchers used many compounds, for example, 4-Iodo-1,2-dimethoxybenzene (cas: 5460-32-2Related Products of 5460-32-2).
4-Iodo-1,2-dimethoxybenzene (cas: 5460-32-2) belongs to iodide derivatives. Typical reactions of alkyl iodides include nucleophilic substitution, elimination, reduction, and the formation of organometallics. The C–I bond is the weakest of the carbon–halogen bonds. These bond strengths correlate with the electronegativity of the halogen, decreasing in the order F > Cl > Br > I. This periodic order also follows the atomic radius of halogens and the length of the carbon-halogen bond.Related Products of 5460-32-2
Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com