Distributions of Dissolved Selenium Species in the Eastern Indian Ocean

DOI Web Site 28 References
  • HATTORI Hiroshi
    Department of Chemistry, Faculty of Science and Technology, Kinki University
  • NAKAGUCHI Yuzuru
    Department of Chemistry, Faculty of Science and Technology, Kinki University
  • KIMURA Munehito
    Department of Chemistry, Faculty of Science and Technology, Kinki University
  • HIRAKI Keizo
    Department of Chemistry, Faculty of Science and Technology, Kinki University

Bibliographic Information

Other Title
  • 東部インド洋における溶存セレンの分布

Search this article

Abstract

The vertical profiles of dissolved selenium species, selenite (+4), selenate (+6), and organic selenide (-2), at five stations in the Indian Ocean were determined with a high performance liquid chromatography(HPLC)-2, 3-diaminonaphtalene (DAN) fluorometric method. The concentrations of selenite in the upper 300m were very low, and the profiles were similar to nutrient behavior (surface depletion-deep water enrichment). A significant correlation between selenite and nutrients in these water columns and stoichiometric models are established for the Indian Ocean. These relationships indicate that the biogeochemical cycle for selenite in the Indian Ocean is similar to that in other ocean regions. Selenate is the dominant species in the surface water and its concentration is almost uniform from the surface to the bottom. However, the mean concentrations of selenate were different at each station. Organic selenide was first identified in open-ocean deep water, and the profiles indicated that some types of organic selenide exist in oceans.

Journal

References(28)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top