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| 洱海沉积物有机质、铁、锰对磷的赋存特征和释放影响 | |
| 引用本文： | 张仕军,齐庆杰,王圣瑞,焦立新,金相灿,杨苏文,赵海超.洱海沉积物有机质、铁、锰对磷的赋存特征和释放影响[J].环境科学研究,2011,24(4):371-377. |
| 作者姓名： | 张仕军 齐庆杰 王圣瑞 焦立新 金相灿 杨苏文 赵海超 |
| 作者单位： | 1. 辽宁工程技术大学资源与环境工程学院,辽宁,阜新,123000;中国环境科学研究院湖泊创新基地,国家环境保护湖泊污染控制重点实验室,北京,100012 2. 辽宁工程技术大学资源与环境工程学院,辽宁,阜新,123000 3. 中国环境科学研究院湖泊创新基地,国家环境保护湖泊污染控制重点实验室,北京,100012 4. 中国环境科学研究院湖泊创新基地,国家环境保护湖泊污染控制重点实验室,北京,100012;河北北方学院农业科学系,河北,张家口,075131 |
| 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： | 利用SMT磷连续提取分级方法研究了洱海表层沉积物中磷的赋存特征,探讨有机质(OM),Fe和Mn对磷赋存形态及释放的影响,同时评估了洱海沉积物磷的释放风险.结果表明:洱海表层沉积物w(TP)为710.3～1 961.2 mg/kg,其中w(Ca-P)最高(占36.9%～59.2%),w(OP)次之(占24.6%～36.9%),w(Fe/Al-P)最低(占9.8%～20.7%);w(OM)为25.0～119.6 mg/g,与w(TP)和w(Ca-P)呈显著负相关;w(总锰)为0.8～3.8 mg/g,w(总铁)为34.3～127.2 mg/g,均与w(TP)及其各形态磷含量呈显著正相关.沉积物中w(Fe/Al-P)/w(Ca-P)比低于0.5,且w(总铁)/w(TP)远大于20,表明磷释放强度小,但w(TOC)/w(OP)<200,说明有机磷的潜在释放风险较大.w(TP)及其各形态磷含量均与无定形铁氧化物(Feo-Fep)含量呈显著正相关,而与结晶态铁氧化物(Fed-Feo)含量的相关性不显著,且全湖沉积物中的铁氧化物以Feo-Fep为主,表明洱海沉积物磷释放主要受Feo-Fep控制. |
| 关 键 词： | 洱海 铁氧化物 磷 有机质 锰 结晶态 无定形态 |
| 收稿时间： | 2010/10/11 0:00:00 |
| 修稿时间： | 2010/11/16 0:00:00 |
Effects of Organic Matter, Manganese and Iron on Phosphorus Fractions and Release in the Sediments of Erhai Lake |
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| ZHANG Shi-jun,QI Qing-jie,WANG Sheng-rui,JIAO Li-xin,JIN Xiang-can,YANG Su-wen and ZHAO Hai-chao.Effects of Organic Matter, Manganese and Iron on Phosphorus Fractions and Release in the Sediments of Erhai Lake[J].Research of Environmental Sciences,2011,24(4):371-377. | |
| Authors: | ZHANG Shi-jun QI Qing-jie WANG Sheng-rui JIAO Li-xin JIN Xiang-can YANG Su-wen and ZHAO Hai-chao |
| Institution: | ZHANG Shi-jun1,2,QI Qing-jie1,WANG Sheng-rui2,JIAO Li-xin2,JIN Xiang-can2,YANG Su-wen2,ZHAO Hai-chao2,3 1.College of Resource and Environmental Engineering,Liaoning Technical University,Fuxin 123000,China 2.State Environmental Protection Key Laboratory for Lake Pollution Control,Research Center of Lake Eco-environment,Chinese Research Academy of Environmental Sciences,Beijing 100012,China 3.Department of Agricultural Science,Hebei North University,Zhangjiakou 075131,China |
| Abstract: | The contents and fractions of phosphorus(P) in surface sediments of the Erhai Lake were studied by the Standard Measurement and Test(SMT) phosphorous sequential extraction and classification procedure.The effects of organic matter(OM),Fe and Mn on P fractions and release were investigated,and the potential P release risk of the sediments was assessed.The results indicated that the content of total phosphorus(TP) varied in the range of 710.3-1961.2 mg /kg,of which w(Ca-P) was the highest(36.9%-59.2%),followe... |
| Keywords: | Erhai Lake phosphorus iron oxides organic matter manganese crystalline form amorphous form |
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