Characterization of the interaction between photodegradation and biological degradation of DOM

DOM 光降解与生物降解相互作用的表征

• 批准号: 23760511
• 负责人: KOMATSU Kazuhiro
• 金额: $ 2.75万
• 依托单位: National Institute for Environmental Studies
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23760511/
• 关键词: DOM; 光分解; 分子サイズ; EEM; 光分解特性

Photodegradation of dissolved organic matter (DOM) in lake water or its inflowing water were characterized by using the technique of measuring dissolved organic carbon (DOC), UV absorbance, and size-exclusion chromatography (HPLC-SEC) with TOC detector. DOM in lake water was revealed to have the conformation of hydrophobic compounds (like fulvic acid) surrounded by hydrophilic compounds. Those hydrophobic compounds were suggested to have high molecular weight (more than 35,000Da) from the result of HPLC-SEC

采用溶解性有机碳（DOC）测定、紫外吸光度测定和体积排阻色谱（HPLC-SEC）TOC检测技术，研究了湖泊水体及其入水中溶解性有机物（DOM）的光降解特性。结果表明，湖泊水体中DOM具有被亲水性化合物包围的疏水性化合物（如富里酸）的构象。HPLC-SEC分析结果表明，这些疏水化合物的分子量较大（大于35，000 Da