Hongxing Yang , Wangjin Yang , Xiangli Nan , Ning Tang , Chong Han
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引用次数: 0
Abstract
The photochemical conversion of SO2 to sulfates on 4–(benzoyl) benzoic acid (4–BBA) was investigated deeply in the presence of anionic and cationic surfactants. The types of surfactants determined their effect behaviors, and cationic surfactants can significantly enhance the SO2 oxidation on 4–BBA under irradiation, as shown by larger SO2 uptake coefficients and sulfate production. Hydrophilic moieties in cationic surfactants have a greater enhancement effect on the photochemical conversion of SO2 to sulfates than the corresponding hydrophobic moieties. Cationic surfactants obviously increased the accumulation of H2O on the surface, which was proved to be the main factor influencing the SO2 uptake and the sulfate formation on 4–BBA. SO2 lifetime and sulfate formation rate in the mixture system of photosensitive substances with surfactants were evaluated to be 2.25 days and 0.09 μg/(m3·h), respectively.
期刊介绍：
The Journal of Environmental Sciences is an international journal started in 1989. The journal is devoted to publish original, peer-reviewed research papers on main aspects of environmental sciences, such as environmental chemistry, environmental biology, ecology, geosciences and environmental physics. Appropriate subjects include basic and applied research on atmospheric, terrestrial and aquatic environments, pollution control and abatement technology, conservation of natural resources, environmental health and toxicology. Announcements of international environmental science meetings and other recent information are also included.
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