Abstracts of Annual Meeting of the Geochemical Society of Japan
Abstracts of Annual Meeting of the Geochemical Society of Japan
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Host: Abstracts of Annual Meeting of the Geochemical Society of Japan

Novel fluorescence method for determination of photochemically generated peroxynitrite in seawater.
*ADENIYI OLUFEMI ADESINA, KAZUHIKO TAKEDA, HIROSHI SAKUGAWA
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Keywords: peroxynitrite, superoxide, nitric oxide, Seto Inland Sea
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Pages 49-

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Abstract

It is known that superoxide (O2·−) and nitric oxide (NO ·) are photochemically generated in sea water. Although it was predicted that peroxynitrite (ONOO-) is formed from these two radicals, there were no empirical evidence of its presence in seawater. We developed a fluorescence analytical method for photochemical ONOO- in this study, and succeeded in measuring its concentration in seawater of Seto Inland Sea. The results revealed that ONOO- exists at steady-state concentrations of several pM in seawater of the Seto Inland Sea.

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