Photochemical oxidation of benzothiophene in seawater

Yang Gui-peng

doi:10.1007/BF02842547

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Photochemical oxidation of benzothiophene in seawater

Updated：2023-05-16

- Photochemical oxidation of benzothiophene in seawater
- Journal of Oceanology and Limnology Vol. 18, Issue 1, Pages: 85-91(2000)
- Affiliations：
  
  College of Chemistry and Chemical Engineering Ocean University of Qingdao
- Author bio：
- Funds：
- DOI：10.1007/BF02842547
  CLC：
- Published：2000
- Accepted：
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Gui-peng, Y. Photochemical oxidation of benzothiophene in seawater., Chin. J. Ocean. Limnol. 18, 85–91 (2000). https://doi.org/10.1007/BF02842547
DOI：

Gui-peng, Y. Photochemical oxidation of benzothiophene in seawater., Chin. J. Ocean. Limnol. 18, 85–91 (2000). https://doi.org/10.1007/BF02842547 DOI：

摘要

Abstract

Kinetic investigation into the photochemical oxidation of benzothiophene in seawater showed that photo-oxidation rates of benzothiophene were influenced by the medium

heavy metal ion

dissolved oxygen

and light intensity. The photo-oxidation of benzothiophene followed the first order reaction law

with the rate constants ranging from 1.21×10−5/s to 5.38×10−5/s. An interesting observation was that the presence of Hg2+ could markedly enhance the photo-oxidation rate of benzothiophene in seawater; and that the photo-oxidation rate of benzothiophene increased with light intensity. The effect of oxygen on the rate constant for benzothiophene photolysis was also observed. Compared with purging with nitrogen

purging seawater with oxygen evidently increased the photolysis rate of benzothiophene. Based on this observation

a benzothiophene photo-oxidation mechanism including singlet oxygen (O2 1Δg) was suggested. Two photolysis products of benzothiophene were identified. The photolysis of benzothiophene is considered to be important in the removal of this compound in seawater.

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references

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