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Título: | Entangled iodine and hydrogen peroxide formation in ice |
Autor: | Baek, Y.S.; Kim, K.; Saiz-Lopez, A. CSIC ORCID; Min, D.W.; Kim, B.; Choi, W.; Choi, C.H. | Fecha de publicación: | 15-jul-2020 | Editor: | Royal Society of Chemistry (UK) | Citación: | Physical Chemistry Chemical Physics 22: 16532-16535 (2020) | Resumen: | Ice-core records show that anthropogenic pollution has increased the global atmospheric concentrations of hydrogen peroxide and iodine since the mid-20th century. Here, for the first time, we demonstrate a highly efficient mechanism that synergistically produces them in icy water conditions. This reaction is aided by a key intermediate IO2H, formed by an I- ion with a dissolved O2 in acidic icy water, which produces both I as well as O2H radicals. I recombines with I- to produce I2- at a diffusion-limited rate, followed by formation of I3- through disproportionation, while O2H yields H2O2 with I- and a proton dissolved in icy water. This journal is | Descripción: | 4 pags., 3 figs. | Versión del editor: | http://dx.doi.org/10.1039/d0cp02966a | URI: | http://hdl.handle.net/10261/228859 | DOI: | 10.1039/d0cp02966a | Identificadores: | doi: 10.1039/d0cp02966a issn: 1463-9076 |
Aparece en las colecciones: | (IQF) Artículos |
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Entangled Iodine.docx | 12,4 MB | Microsoft Word XML | Visualizar/Abrir |
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