Heterogeneous Reaction of Gaseous Ozone with Aqueous Iodide in the Presence of Aqueous Organic Species
作者:Sayaka Hayase、Akihiro Yabushita、Masahiro Kawasaki、Shinichi Enami、Michael R. Hoffmann、Agustín J. Colussi
DOI:10.1021/jp101985f
日期:2010.5.20
The fast reaction of gaseous ozone, O3(g), with aqueous iodide, I−(aq), was found to be affected by environmentally relevant cosolutes in experiments using cavity ring-down spectroscopy (CRDS) and electrospray ionization mass spectrometry (ESIMS) for the detection of gaseous and interfacial products, respectively. Iodine, I2(g), and iodine monoxide radical, IO(g), product yields were suppressed in
气态臭氧的快速反应,O- 3(g)中,用含水碘,我- (水溶液),被发现要由环境相关cosolutes在使用光腔衰荡光谱法(CRDS)和电喷雾电离质谱(ESI-MS实验的影响)分别用于检测气态和界面产物。碘,我2(g)和碘一氧化碳基团,IO(克),产品产率在几毫摩尔苯酚的存在下抑制(P ķ一个= 10.0),p甲氧基苯酚(10.2),或p甲酚( 10.3)在pH≥3但不受水杨酸影响(p K a 2 = 13.6),叔丁醇,n-丁醇或丙二酸。我们推断,反应性阴离子酚抑制余2通过与予竞争(g)和10(G)的排放量- (水溶液)对于O- 3在空气/水界面(克)。ESIMS产品分析支持此机制。讨论了大气影响。