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| 洱海表层沉积物吸附磷特征 | |
| 引用本文： | 何宗健,刘文斌,王圣瑞,焦立新,赵海超.洱海表层沉积物吸附磷特征[J].环境科学研究,2011,24(11):1242-1248. |
| 作者姓名： | 何宗健 刘文斌 王圣瑞 焦立新 赵海超 |
| 作者单位： | 1. 南昌大学环境与化学工程学院,江西南昌,330031 2. 南昌大学环境与化学工程学院,江西南昌330031;中国环境科学研究院湖泊生态环境创新基地,国家环境保护湖泊污染控制重点实验室,北京100012 3. 中国环境科学研究院湖泊生态环境创新基地,国家环境保护湖泊污染控制重点实验室,北京100012 |
| 基金项目： | 国家水体污染控制与治理科技重大专项(2008ZX07105-005) |
| 摘 要： | 试验研究了洱海表层沉积物吸附磷动力学与等温吸附过程,探讨了总有机质与总钙对沉积物吸附磷参数的影响.结果表明:①洱海表层沉积物对磷的吸附动力学过程均可分为2个阶段,即快速吸附阶段和慢速吸附阶段.快速吸附阶段主要发生在0～0.5 h内,而慢速吸附阶段主要发生在0.5～5 h,所有沉积物均在5 h内基本达到吸附平衡.②不同采样点沉积物对磷的Qmax(最大吸附容量,为904.60～1 420.34 mgkg)及MBC(最大缓冲容量,为477.33～2 300.95 Lkg)均以西岸沉积物明显高于东岸,但其EPC0(吸附-解吸平衡浓度,为0.015～0.068 mgL)则相反.③沉积物总有机质和总钙含量与其Qmax和Vmax(最大吸附速率)呈显著正相关,但与EPC0呈显著负相关.④洱海表层沉积物吸附磷参数Vmax和Qmax明显高于长江中下游浅水湖泊沉积物,而参数EPC0较低.因此,洱海沉积物释放风险较大但现今释放量较小,与洱海沉积物总有机质和总钙含量较高有关. |
| 关 键 词： | 洱海 沉积物 磷 吸附 吸附速率 吸附容量 |
| 收稿时间： | 2011/3/11 0:00:00 |
| 修稿时间： | 2011/5/27 0:00:00 |
Phosphate Adsorption Characteristics on the Surface Sediments of Erhai Lake |
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| HE Zong-jian,LIU Wen-bin,WANG Sheng-rui,JIAO Li-xin and ZHAO Hai-chao.Phosphate Adsorption Characteristics on the Surface Sediments of Erhai Lake[J].Research of Environmental Sciences,2011,24(11):1242-1248. | |
| Authors: | HE Zong-jian LIU Wen-bin WANG Sheng-rui JIAO Li-xin and ZHAO Hai-chao |
| Institution: | HE Zong-jian1,LIU Wen-bin1,2,WANG Sheng-rui2,JIAO Li-xin2,ZHAO Hai-chao2 1.College of Environmental and Chemical Engineering,Nanchang University,Nanchang 330031,China 2.State Environmental Protection Key Laboratory for Lake Pollution Control,Research Center for Lake Eco-environment,Chinese Research Academy of Environment Sciences,Beijing 100012,China |
| Abstract: | Adsorption kinetics and isotherms of phosphate on the surface sediments from Erhai Lake were determined through batch experiments,and the effect of total organic matter(TOM) and total calcium content in the sediments on the phosphate adsorption parameters were discussed.The results indicated that: 1) The process of phosphate adsorption kinetics of the surface sediments from Erhai Lake was divided into the rapid adsorption stage and the slow adsorption stage,which mainly occurred in the first 0.5 h and from ... |
| Keywords: | Erhai Lake sediments phosphate adsorption adsorption rate adsorption capacity |
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