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Photochemical Formation of Hydroxyl Radical in Red-Soil-Polluted Seawater in Okinawa, Japan Potential Impacts on Marine Organisms

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dc.creator Arakaki, T.
dc.creator Hamdun, Asha
dc.creator Okada, Kazunori
dc.creator Kuroki, Y.
dc.creator Ikota, Hirotsugu
dc.creator Fujimura, Hiroyuki
dc.creator Oomori, Tamotsu
dc.date 2016-07-14T20:50:41Z
dc.date 2016-07-14T20:50:41Z
dc.date 2004-11
dc.date.accessioned 2018-03-27T08:23:52Z
dc.date.available 2018-03-27T08:23:52Z
dc.identifier Arakaki, T., Hamdun, A.M., Okada, K., Kuroki, Y., Ikota, H., Fujimura, H. and Oomori, T., 2004, December. Photochemical Formation of Hydroxyl Radical in Red-Soil-Polluted Seawater in Okinawa, Japan-Potential Impacts on Marine Organisms. In AGU Fall Meeting Abstracts.
dc.identifier http://hdl.handle.net/20.500.11810/3207
dc.identifier.uri http://hdl.handle.net/20.500.11810/3207
dc.description Full text can be accessed at http://eurekamag.com/research/019/720/019720980.php#close
dc.description Development of pineapple farmlands and construction of recreational facilities caused runoff of red soil into coastal ocean (locally termed as red-soil-pollution) in the north of Okinawa Island, Japan. In an attempt to understand the impacts of red soil on oxidizing power of the seawater, we studied formation of hydroxyl radical (OH radical), the most potent oxidant in the environment, in red-soil-polluted seawaters, using 313 nm monochromatic light. Photo-formation rates of OH radical showed a good correlation with dissolved iron concentrations (R = 0.98). The major source of OH radical was found to be the Fenton reaction (a reaction between Fe(II) and HOOH). The un-filtered red-soil-polluted seawater samples exhibited faster OH radical formation rates than the filtered samples, suggesting that iron-bearing red soil particles enhanced formation of OH radical.
dc.language en
dc.title Photochemical Formation of Hydroxyl Radical in Red-Soil-Polluted Seawater in Okinawa, Japan Potential Impacts on Marine Organisms
dc.type Journal Article


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