地理科学 ›› 1996, Vol. 16 ›› Issue (2): 164-169.doi: 10.13249/j.cnki.sgs.1996.02.164

• 研究报道 • 上一篇    下一篇

沉积物中水溶性天然有机物吸着系数的动态测定

林滨, 陶澍   

  1. 北京大学城市与环境学系, 北京100871
  • 收稿日期:1994-10-21 出版日期:1996-03-20 发布日期:1996-03-20
  • 基金资助:
    国家自然科学基金资助项目

DETERMINATION OF SORPTION COEFFICIENT OF WATER-SOLUBLE ORGANIC MATTER IN SEDIMENT

Lin Bin, Tao Shu   

  1. Dept. of Geography, Peking University, Beijing 100871
  • Received:1994-10-21 Online:1996-03-20 Published:1996-03-20

摘要: 探讨了直接测定沉积物中水溶性天然有机物吸着系数的可行性,提出了改变水土比和连续提取两种动态测定方法,从理论上分析了两种方法的操作误差.结果表明,这两种方法均能同时测定样品中水溶性有机物的含量和吸着系数;改变水土比法明显优于连续提取法.用该方法测定了伊春河沉积物样品中水溶性有机物的含量与吸着系数.

Abstract: Two procedures of Multiple Solid-Water Ratio(MSWR) and Sequential Extraction (SE) for determination of sorption coefficients of water-soluble organic matter in river sediment were proposed.The operational feasibility of the procedures and the procedural errors were analyzed.It was demonstrated that the MSWR method is favored over the SE method due to its operational easiness and relatively high accuracy.The content and the sorption coefficient of water-soluble organic matter of a sediment collected from the Yichun River determined with MSWR procedure are 0.247 mg/l and 0.0045 l/g respectively.