化学
光化学
单层
水溶液
臭氧
惰性气体
双水相体系
吸收(声学)
分子
相(物质)
脂肪酸
粒子(生态学)
有机化学
材料科学
地质学
复合材料
海洋学
生物化学
作者
Stéphane Rossignol,Liselotte Tinel,Angelica Bianco,Monica Passananti,Marcello Brigante,D. J. Donaldson,Christian George
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2016-08-12
卷期号:353 (6300): 699-702
被引量:129
标识
DOI:10.1126/science.aaf3617
摘要
Although fatty acids are believed to be photochemically inert in the actinic region, complex volatile organic compounds are produced during illumination of an air-water interface coated solely with a monolayer of carboxylic acid. When aqueous solutions containing nonanoic acid (NA) at bulk concentrations that give rise to just over a monolayer of NA coverage are illuminated with actinic radiation, saturated and unsaturated aldehydes are seen in the gas phase, and more highly oxygenated products appear in the aqueous phase. This chemistry is probably initiated by triplet-state NA molecules excited by direct absorption of actinic light at the water surface. Because fatty acids-covered interfaces are ubiquitous in the environment, such photochemical processing will have a substantial impact on local ozone and particle formation.
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