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| 城市重污染河道底泥对外源磷的吸附和固定机制 | |
| 引用本文： | 李大鹏,黄勇,袁砚,范成新.城市重污染河道底泥对外源磷的吸附和固定机制[J].环境科学,2011,32(1):96-101. |
| 作者姓名： | 李大鹏 黄勇 袁砚 范成新 |
| 作者单位： | 1. 中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室,南京,210008;苏州科技学院环境科学与工程学院,苏州,215011 2. 苏州科技学院环境科学与工程学院,苏州,215011 3. 中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室,南京,210008 |
| 基金项目： | 国家自然科学青年基金项目(50908154);国家自然科学基金重点项目(50938005) |
| 摘 要： | 以重污染河道底泥和上覆水为材料,研究了周期性加入外源磷条件下,间歇扰动对底泥吸附和固定外源磷的作用机制.结果表明,扰动状态下,39d内底泥对外源磷的累积吸附量达到363.4 mg·kg-1,远高于静态试验(213.2 mg·kg-1).内源磷形态分析表明,扰动状态下底泥吸附的外源磷中超过61%被结合到铁铝结合态磷(Fe... |
| 关 键 词： | 底泥 吸附 磷形态 磷平衡浓度 |
| 收稿时间： | 1/9/2010 12:00:00 AM |
| 修稿时间： | 2010/3/25 0:00:00 |
Mechanism of Phosphorus Adsorption and Immobility by Sediments in Inner-City Heavily Polluted Canal |
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| LI Da-peng,HUANG Yong,YUAN Yan and FAN Cheng-xin.Mechanism of Phosphorus Adsorption and Immobility by Sediments in Inner-City Heavily Polluted Canal[J].Chinese Journal of Environmental Science,2011,32(1):96-101. | |
| Authors: | LI Da-peng HUANG Yong YUAN Yan and FAN Cheng-xin |
| Institution: | LI Da-peng1,2,HUANG Yong2,YUAN Yan2,FAN Cheng-xin1(1.State Key Laboratory of Lake Science and Environment,Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Nanjing 210008,China,2.School of Environmental Science and Engineering,Suzhou University of Science and Technology,Suzhou 215011,China) |
| Abstract: | The mechanisms of phosphorus(P) adsorption and immobility were investigated in laboratory experiments.The sediments and waters used were taken from an inner-city heavily polluted canal.Addition of KH2 PO4 into the operated experimental units,with and without(i.e.,static) intermittent sediment resuspension,were made similar to the external P input and carried out periodically.The results show that the amount of the accumulative P adsorption onto the sediments was up to 363.4 mg.kg-1 under the conditions of s... |
| Keywords: | sediment adsorption phosphorus fraction zero equilibrium phosphorus concentration |
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