論文

査読有り
2018年4月

Nanomolar Determination of Hydrogen Peroxide in Coastal Seawater Based on the Fenton Reaction with Terephthalate

ANALYTICAL SCIENCES
  • Kazuhiko Takeda
  • ,
  • Hitoshi Nojima
  • ,
  • Kengo Kuwahara
  • ,
  • Russel Chrispine Chidya
  • ,
  • Adeniyi Olufemi Adesina
  • ,
  • Hiroshi Sakugawa

34
4
開始ページ
459
終了ページ
464
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.2116/analsci.17P536
出版者・発行元
JAPAN SOC ANALYTICAL CHEMISTRY

A non-enzymatic fluorescence method for the determination of hydrogen peroxide (H2O2) was investigated. This method is based on the hydroxylation reaction of terephthalate (TP) by hydroxyl radical formed from reaction between H2O2 and Fe(II), resulting in the formation of a strongly fluorescent 2-hydroxyterephthalate (HTP). Under optimized conditions, a 3 nM detection limit and 1.0% precision at 200 nM were obtained. This was sensitive enough to determine the concentrations of H2O2 in coastal marine environments. The slopes of the calibration curve in seawater were nearly the same as those in Milli-Q water, suggesting that the fluorescent intensity was not affected by coexisting sea salts. However, the presence of nitrite at more than 10 mu M interfered with the formation of HTP. The developed method was successfully applied to determine the concentrations of H2O2 in Osaka Bay on the research vessel. The results obtained in Osaka Bay demonstrated that H2O2 was photochemically produced via the photolysis of dissolved organic matter supplied from the river with fresh water at the surface layer.

Web of Science ® 被引用回数 : 4

リンク情報
DOI
https://doi.org/10.2116/analsci.17P536
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000431099000011&DestApp=WOS_CPL

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