Magnesian calcite overgrowths on calcite seeds from seawater (25.DEG.C.) in the presence of humic acid

• Ohde Shigeru

  Faculty of Science, University of the Ryukyus

• Ramos Alexis Aguino

  Faculty of Science, University of the Ryukyus

• Morse John W.

  Department of Oceanography, Texas A&M University

Bibliographic Information

Other Title

• Magnesian calcite overgrowths on calcite seeds from seawater (25℃) in the presence of humic acid
• Magnesian calcite overgrowths on calcite seeds from seawater 25ドC in the presence of humic acid

Abstract

Precipitation experiments were carried out using chemo-stat technique in order to determine the effect of humic acid on the precipitation rate and composition of magnesian calcite from seawater under laboratory conditions (25°C, 1 atm). Results of our study clearly show that the presence of humic acid in seawater reduces the precipitation rate of magnesian calcite. However, MgCO₃ composition in magnesian calcite overgrowths is not influenced by the presence of up to 9.2 mg C/l of humic acid.

Journal

• GEOCHEMICAL JOURNAL

  GEOCHEMICAL JOURNAL 39 (2), 197-200, 2005

  GEOCHEMICAL SOCIETY OF JAPAN

Keywords

• magnesian calcite
• humic acid
• overgrowth experiment
• seawater
• precipitation kinetics

Details

• CRID: 1390282679528263552
• NII Article ID: 10015513220
• NII Book ID: AA00654975
• DOI: 10.2343/geochemj.39.197
• COI: 1:CAS:528:DC%2BD2MXjsVaksb0%3D
• ISSN: 18805973
• ISSN: 00167002
• NDL BIB ID: 7297072
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7297072
• Web Site: http://www.jstage.jst.go.jp/article/geochemj/39/2/39_2_197/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed