Determination of Hydroxyl Radical in Seto Inland Sea and its Potential to Degrade Irgarol

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dc.contributor.authorOlasehinde, Emmanuel F.
dc.contributor.authorOgunsuyi, H. O.
dc.contributor.authorSakugawa, H.
dc.date.accessioned2019-06-26T08:03:55Z
dc.date.available2019-06-26T08:03:55Z
dc.date.issued2012-07
dc.description.abstractPhoto-production rates and overall scavenging rate constants of the highly reactive hydroxyl radicals (•OH) were measured by irradiation of surface seawater samples collected from the Seto Inland Sea, Japan. Photo-production rates of •OH ranged from 7.2 × 10-12 M s-1 to 424 × 1012 M s-1 and scavenging rate constants were 1.3 – 4.1×106 s -1 . The steady state concentrations of •OH in seawater, which were calculated from the photo-production rates and scavenging rate constants were in the range 2.6 –189 × 10-18 M. Estimation from the scavenging rate constant showed that the lifetime of •OH in seawater ranged from 0.29 ×10-6 s to 0.55 ×10-6 s. Nitrates and hydrogen peroxide contributions to OH radical formation rates were negligible in the samples studied. However, direct photolysis of NO2 - accounted for up to 73% of the observed •OH formation rates. The rate constant for the reaction •OH with irgarol was found to be (9.7 ± 0.52) × 109 M - 1 s -1. Based on the steady state concentration of •OH, the calculated half-lives for Irgarol due to the reaction with hydroxyl radicals in the Seto Inland Sea were in the range 4.3-318 daysen_US
dc.identifier.citationOlasehinde, E. F., Ogunsuyi, H. O., & Sakugawa, H. (2012). Determination of hydroxyl radical in Seto Inland Sea and its potential to degrade Irgarol. IOSR Journal of Applied Chemistry, 1, 7-14.en_US
dc.identifier.issn2278-5736
dc.identifier.urihttp://repository.elizadeuniversity.edu.ng/handle/20.500.12398/161
dc.language.isoenen_US
dc.publisherIOSRen_US
dc.subjectHydroxyl radicalen_US
dc.subjectirgarolen_US
dc.subjectphotochemistryen_US
dc.subjectrate constanten_US
dc.subjectseawateren_US
dc.titleDetermination of Hydroxyl Radical in Seto Inland Sea and its Potential to Degrade Irgarolen_US
dc.typeArticleen_US
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