Laboratoire de Chimie Physique-Matière et Rayonnement, Université Pierre et Marie Curie (UPMC-Université Paris 06) and CNRS (UMR 7614), Paris, France.
Phys Chem Chem Phys. 2012 Jan 14;14(2):697-704. doi: 10.1039/c1cp21707k. Epub 2011 Nov 22.
Oxygenated volatile organic compounds (OVOCs) influence the oxidative properties of the atmosphere, and their transport from the ground may occur by scavenging by the HNO(3)-rich supercooled water droplets found in polluted convective air masses. With infrared spectroscopy, we have studied the interactions of four typical atmospheric OVOCs (acetone, hydroxyacetone, acetaldehyde and benzaldehyde) with model surfaces of water ice and of trihydrated nitric acid (NAT) ice. We show that these molecules weakly adsorb on water ice and NAT by hydrogen bonding. No chemical reaction occurs between the molecules and the NAT substrate, the OVOCs remaining intact when in contact with hydrated HNO(3) in atmospheric ice clouds.
含氧挥发性有机化合物（OVOCs）影响大气的氧化性质，它们可能通过被富含 HNO3 的过冷水滴（存在于污染的对流空气团中）清除而从地面输送。我们使用红外光谱法研究了四种典型的大气 OVOCs（丙酮、羟基丙酮、乙醛和苯甲醛）与水冰和三水合硝酸（NAT）冰模型表面的相互作用。我们表明，这些分子通过氢键弱吸附在水冰和 NAT 上。分子与 NAT 底物之间没有化学反应发生，当与大气冰云中的水合 HNO3 接触时，OVOCs 保持完整。
