| 环境因子对长江宜宾段底泥吸附磷的影响 |
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| 引用本文： | 姜延雄,刘颖,邓翠.环境因子对长江宜宾段底泥吸附磷的影响[J].四川环境,2012,31(2):7-10. |
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| 作者姓名： | 姜延雄 刘颖 邓翠 |
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| 作者单位： | 西南交通大学地球科学与环境工程学院,成都,610031 |
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| 基金项目： | 中央高校基本科研业务费专项资金科技创新项目 |
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| 摘 要： | 本文主要研究模拟长江底泥对富营养化水体磷的吸附,分析环境因子对底泥吸附磷的影响。结果显示：（1）在25℃时,底泥对磷的吸附在碱性条件时的吸附速率小于酸性和中性条件,中性条件下的吸附速率最大;（2）在控制上覆水温度时,温度越高底泥对磷的吸附量越小,20℃时底泥的吸附量是30℃吸附量的1.5倍;（3）上覆水中溶解氧的浓度越高,吸附速率越高。
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| 关 键 词： | 底泥 吸附 磷 |
Effect of Environmental Factors on Sediment Adsorbing Phosphorus in Yibin Section of the Yangtze River |
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| JIANG Yan-xiong,LIU Ying,DENG Cui.Effect of Environmental Factors on Sediment Adsorbing Phosphorus in Yibin Section of the Yangtze River[J].Sichuan Environment,2012,31(2):7-10. |
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| Authors: | JIANG Yan-xiong LIU Ying DENG Cui |
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| Institution: | (Faculty of Geosciences & Environmental Engineering of Southwest Jiaotong University,Chengdu 610031,China) |
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| Abstract: | This paper simulates the phosphorus adsorption in eutrophicated water by the Yangtze River sediment to analyze the effect of environmental factors on phosphorus adsorption by the sediment.The results show that(1) at 25 ℃,the rate of phosphorus adsorption in alkaline condition is lower than that at acid or neutral conditions,and the absorption rate reaches maximum at neutral condition;(2) When overlying water temperature is controlled,the adsorption of phosphorus by the sediment reducing with the increasing of the temperature,actually the phosphorus adsorption at 20℃ is as 1.5 times as that at 30℃ and(3) The concentration of dissolved oxygen of overlying water increasing with the increasing of the adsorption rate. |
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| Keywords: | Sediment adsorption phosphorus |
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