Application of Fenton reaction for nanomolar determination of hydrogen peroxide in seawater

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dc.contributor.authorOlasehinde, Emmanuel F.
dc.contributor.authorMakino, Shinya
dc.contributor.authorKondo, Hiroaki
dc.contributor.authorTakeda, Kazuhiko
dc.contributor.authorSakugawa, Hiroshi
dc.date.accessioned2021-02-09T10:19:19Z
dc.date.available2021-02-09T10:19:19Z
dc.date.issued2008-08-28
dc.descriptionStaff Publicationen_US
dc.description.abstractA simple and sensitive method for the determination of nanomolar levels of hydrogen peroxide (H2O2) in seawater has been developed and validated. This method is based on the reduction of H2O2 by ferrous iron in acid solution to yield hydroxyl radical (•OH) which reacts with benzene to produce phenol. Phenol is separated from the reaction mixture by reversed phase high performance liquid chromatography and its fluorescence intensity signals were measured at excitation and emission of 270 and 298 nm, respectively. Under optimumconditions, the calibration curve exhibited linearity in the range of (0–50)×103 nmol L−1 H2O2. The relative standard deviations for five replicate measurements of 500 and 50 nmol L−1 H2O2 are 1.9 and 2.4%, respectively. The detection limit for H2O2, defined as three times the standard deviation of the lowest standard solution (5 nmol L−1 H2O2) in seawater is 4 nmol L−1. Interference of nitrite ion (NO2 −) on the fluorescence intensity of phenol was also investigated. The result indicated that the addition of 10 mol L−1 NO2 − to seawater samples showed no significant interference, although, the addition of 50 mol L−1 NO2 − to the seawater samples decreases the fluorescence intensity signals of phenol by almost 40%. Intercomparison of this method with well-accepted (p-hydroxyphenyl) acetic acid (POHPAA)-FIA method shows excellent agreement. The proposed method has been applied on-board analysis of H2O2 in Seto Inland seawater samples.en_US
dc.description.sponsorshipGrants-in-Aid for Scientific Research (B) (18310010), Japan Society for the Promotion of Science.en_US
dc.identifier.citationOlasehinde, E. F., Makino, S., Kondo, H., Takeda, K., & Sakugawa, H. (2008). Application of Fenton reaction for nanomolar determination of hydrogen peroxide in seawater. Analytica Chimica Acta, 627(2), 270–276. doi:10.1016/j.aca.2008.08.026en_US
dc.identifier.uri10.1016/j.aca.2008.08.026
dc.identifier.urihttp://repository.elizadeuniversity.edu.ng/jspui/handle/20.500.12398/815
dc.language.isoen_USen_US
dc.publisherElsevieren_US
dc.subjectHydrogen peroxideen_US
dc.subjectFenton reactionen_US
dc.subjectSeawateren_US
dc.subjectHigh performance liquiden_US
dc.subjectchromatographen_US
dc.subjectHydroxyl radicalen_US
dc.titleApplication of Fenton reaction for nanomolar determination of hydrogen peroxide in seawateren_US
dc.typeArticleen_US
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