Studies on the Release of Ammonium Nitrogen from the Bottom Sediments in Freshwater Regions

• 神山 孝吉

  京都大学防災研究所

• 奥田 節夫

  京都大学防災研究所

• 河合 章

  京都大学食糧科学研究所

書誌事項

タイトル別名

• II. Ammonium Nitrogen in Dissolved and Adsorbed Form in the Sediments

抄録

Ammonium nitrogen in bottom sediments may be classified into two types, one dissolved in interstitial water and the other adsorbed on the mud particles. In order to clarify the movement of ammonium nitrogen in the sediments and then to estimate its release rate into the overlying water, the basic behaviour of ammonium nitrogen in the interstitial water of the sediments should be investigated. The present experiments were carried out employing the mud samples collected from Akanoi Bay in Lake Biwa. The concentration of ammonium nitrogen in interstitial water was found to be in equilibrium with the amount of ammonium nitrogen adsorbed on the mud particles and a change in the former was observed to bring about adsorption or desorption of ammonium nitrogen onto or from the mud particles. The equilibrium was attained almost immediately and was affected by the temperature of the mud sample. The adsorption or the desorption in mud particles - interstitial water system should be taken into consideration in order to apply the diffusion process and to clarify the movement of ammonium nitrogen in the bottom sediments.

収録刊行物

• 陸水学雑誌

  陸水学雑誌 38 (3), 100-106, 1977

  日本陸水学会

キーワード

• Water Science and Technology
• Ecology
• Aquatic Science

詳細情報

• CRID: 1390282679039402880
• NII論文ID: 130003644457
• DOI: 10.3739/rikusui.38.100
• ISSN: 18824897
• ISSN: 00215104
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可