The use of glycol ethers as solvents and chemical intermediates has increased markedly in recent years. Once released into the atmosphere, they can undergo degradation processes mainly by reactions with the atmospheric oxidants that can have significant effects on the environment. In this work, the kinetic and products study of reactions of 2-isopropoxyethanol (2-iPE, (CH)CHOCHCHOH) with OH and NO radicals and Cl atoms have been performed using FTIR (Fourier Transform Infrared Spectroscopy) and GC-MS (Gas Chromatography/Mass Spectrometry) as detection techniques. The rate coefficients obtained were (units cm molecule s): (2.18 ± 0.15) × 10, (1.88 ± 0.10) × 10 and (3.16 ± 0.45) × 10 for Cl, OH· and NO· reactions, respectively. The kinetic results obtained have been included in comparison tables of the general reactivity of hydroxy ethers to extract conclusions of the atmospheric behaviour of this type of compounds. The main products detected and quantified have been isopropyl formate, formaldehyde, 2-hydroxyethyl acetate and, in the case of NO· reactions, nitrated compounds. A reaction mechanism has been proposed according to the reaction products obtained. The calculated lifetimes have been determined and Global Warming Potential (GWP) and Photochemical Ozone Creation Potential (POCP) have been estimated, concluding, first, that the reaction with OH radicals is the main pathway of degradation of this and others glycol ethers in the atmosphere, second, that these compounds have GWP negligible and third, that they could have influence on ozone generation at local and regional level.

中文翻译：

---

2-异丙氧基乙醇的大气降解：与 Cl、OH 和 NO3 的反应

近年来，乙二醇醚作为溶剂和化学中间体的使用显着增加。一旦释放到大气中，它们就会主要通过与大气氧化剂发生反应而经历降解过程，这会对环境产生重大影响。在这项工作中，使用 FTIR（傅里叶变换红外光谱）和 GC-MS（气体色谱/质谱）作为检测技术。对于Cl、OH·和NO·反应，获得的速率系数分别为（单位cm分子s）：（2.18±0.15）×10、（1.88±0.10）×10和（3.16±0.45）×10。获得的动力学结果已包含在羟基醚的一般反应性的比较表中，以得出此类化合物的大气行为的结论。检测和定量的主要产物是甲酸异丙酯、甲醛、乙酸2-羟乙酯，以及NO·反应的硝化化合物。根据所得反应产物提出了反应机理。计算出的寿命已经确定，全球变暖潜势 (GWP) 和光化学臭氧生成潜势 (POCP) 也已估计，首先得出的结论是，与 OH 自由基的反应是这种二醇醚和其他二醇醚在大气中降解的主要途径。第二，这些化合物的 GWP 可以忽略不计；第三，它们可能对地方和区域层面的臭氧产生产生影响。