Chemical Speciation of Trace Metals in Seawater: a Review

• HIROSE Katsumi

  Geochemical Research Department, Meteorological Research Institute

抄録

The recent development of the chemical speciation of trace metals in seawater is described. The speciation studies reveal that metal ion complexation is one of the most important processes in seawater; especially, most bioactive trace metals, such as Fe(III) and Cu, exist as complexes with ligands in dissolved organic matter. The organic ligands in seawater are characterized with metal ions selected by the HSAB concept. A strong organic ligand, which originates from marine microorganisms, is classified as a hard base including carboxylates. The free organic ligand concentrations in seawater are buffered by complexation with excess amounts of Ca and Mg in seawater. The chemical equilibrium model suggested that the concentrations of bioactive free metal ions are at an optimal level to activities of marine microorganisms. For chemical speciation, it is important to have a better understanding of the ecological roles of trace metals in seawater.

収録刊行物

• Analytical Sciences

  Analytical Sciences 22 (8), 1055-1063, 2006

  社団法人 日本分析化学会

キーワード

• Analytical Chemistry

詳細情報

• CRID: 1390282679234669824
• NII論文ID: 130004441315
• NII論文ID: 10017649928
• NII書誌ID: AA10500785
• DOI: 10.2116/analsci.22.1055
• ISSN: 13482246
• ISSN: 09106340
• NDL書誌ID: 8011232
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8011232
• Web Site: https://link.springer.com/content/pdf/10.2116/analsci.22.1055.pdf
• Web Site: https://link.springer.com/article/10.2116/analsci.22.1055/fulltext.html
• Web Site: https://www.jstage.jst.go.jp/article/analsci/22/8/22_8_1055/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可