Observation of gas-phase peroxynitrous and peroxynitric acid during the photolysis of nitrate in acidified frozen solutions
作者:Otman Abida、Levi H. Mielke、Hans D. Osthoff
DOI:10.1016/j.cplett.2011.06.055
日期:2011.8
oxides evolved from irradiated frozen solutions containing nitrate. Products were monitored by cavity ring-down spectroscopy (CRDS), NO-O3 chemiluminescence (CL), and chemical ionization mass spectrometry (CIMS). Under acidic conditions, the nitrogen oxides volatilized were mainly in the form of NOz, i.e., nitrous (HONO), nitric (HONO2), peroxynitrous (HOONO), and peroxynitric acid (HO2NO2). Identification
嵌入冰和雪中的硝酸盐的光解可能是影响行星边界层组成的挥发性氮氧化物的重要来源。在这项工作中,我们检查了从辐照的含硝酸盐的冷冻溶液中释放出的氮氧化物。通过腔衰荡光谱(CRDS),NO-O 3化学发光(CL)和化学电离质谱(CIMS)监控产品。在酸性条件下,使氮氧化物挥发,主要是在NO的形式Ž,即,亚硝酸(HONO),硝酸(HONO 2),过氧(HOONO),和过硝酸(HO 2 NO 2)。通过CIMS和可能的HOONO,HONO 2和HO鉴定酸性氮氧化物讨论了2种NO 2的形成途径。