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New Chalcogens Study Findings Have Been Reported by Investigators at University of New Orleans (Solar production of singlet oxygen from crude oil...

July 22, 2014



New Chalcogens Study Findings Have Been Reported by Investigators at University of New Orleans (Solar production of singlet oxygen from crude oil films on water)

By a News Reporter-Staff News Editor at Life Science Weekly -- Investigators publish new report on Chalcogens. According to news reporting from New Orleans, Louisiana, by NewsRx journalists, research stated, "Photochemical production of singlet oxygen from thin oil films over seawater and pure water was measured with furfuryl alcohol as a selective chemical probe. Oil was collected from the surface of the Gulf of Mexico following the deepwater horizon spill and from other sources."

The news correspondents obtained a quote from the research from the University of New Orleans, "The loss of furfuryl alcohol and the formation of 6-hydroxy(2H)pyran-3(6H)-one were monitored. Total singlet oxygen formation was studied using high furfuryl alcohol concentrations and varying exposure time. The total amount of singlet oxygen produced in 1 h irradiations of thin oil films (100 mg, 60 microns thick) over Gulf of Mexico water and pure water were 1.9 +/- 0.4 x 10(-5) and 1.6 +/- 0.3 x 10(-5) mol, respectively. After initial tests were performed, titanium dioxide (TiO2) nanomaterials were added to the system in two different concentrations to study the effects of singlet oxygen formation in the presence of a photocatalyst. The addition of TiO2 nanoparticles did not significantly change the observed formation rate of singlet oxygen. Steady state concentrations of photoproduced singlet oxygen were also determined and found to be near 1 x 10(-12) M in water under thin films of oil, which is considerably greater than values previously observed for pure seawater. This study illustrates that oil is a source of singlet oxygen when exposed to sunlight."

According to the news reporters, the research concluded: "The fate of oil and other dissolved species will be heavily dependent on the formation and reaction of singlet oxygen in thin oil films on water."

For more information on this research see: Solar production of singlet oxygen from crude oil films on water. Journal of Photochemistry and Photobiology A-Chemistry, 2014;286():22-28. Journal of Photochemistry and Photobiology A-Chemistry can be contacted at: Elsevier Science Sa, PO Box 564, 1001 Lausanne, Switzerland (see also Chalcogens).

Our news journalists report that additional information may be obtained by contacting P.Z. Ray, University of New Orleans, Dept. of Chem, New Orleans, LA 70148, United States.

Keywords for this news article include: Louisiana, Chalcogens, New Orleans, United States, Singlet Oxygen, Reactive Oxygen Species, North and Central America

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Life Science Weekly


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