表面活性剂显著增强光敏物质上二氧化硫向硫酸盐的光化学转化

IF 5.9 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Journal of Environmental Sciences-china Pub Date : 2024-10-23 DOI:10.1016/j.jes.2024.10.014

Hongxing Yang , Wangjin Yang , Xiangli Nan , Ning Tang , Chong Han

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Significantly surfactant-enhanced photochemical conversion of SO2 to sulfates on photosensitive substances

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Significantly surfactant-enhanced photochemical conversion of SO2 to sulfates on photosensitive substances

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.

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来源期刊

Journal of Environmental Sciences-china 环境科学-环境科学

CiteScore

13.70

自引率

0.00%

发文量

6354

审稿时长

2.6 months

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.