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| 滇池沉积物有机磷垂直分布特征及其生物有效性 | |
| 引用本文： | 熊强,焦立新,王圣瑞,彭希珑.滇池沉积物有机磷垂直分布特征及其生物有效性[J].环境科学,2014,35(11):4118-4126. |
| 作者姓名： | 熊强 焦立新 王圣瑞 彭希珑 |
| 作者单位： | 1. 中国环境科学研究院，环境基准与风险评估国家重点实验室，北京 100012; 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; 南昌大学环境与化学工程学院，南昌 330031 2. 中国环境科学研究院，环境基准与风险评估国家重点实验室，北京 100012; 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. 南昌大学环境与化学工程学院,南昌,330031 |
| 基金项目： | 国家自然科学基金项目，国家水体污染控制与治理科技重大专项 |
| 摘 要： | 选取了滇池4个代表性柱状沉积物样品,研究了其不同形态有机磷含量及垂直分布,并利用酶水解技术表征了其不同形态有机磷生物有效性.结果表明:1除水提取磷(H2O-Po)外,滇池沉积物可提取磷以无机磷为主,其各形态有机磷含量大小为NaOH提取有机磷(NaOH-Po)>NaHCO3提取有机磷(NaHCO3-Po)>H2O-Po>HCl提取有机磷(HCl-Po),其中H2O-Po、NaHCO3-Po与NaOH-Po迁移性较高,其含量垂直分布呈现表层>中层>底层趋势.2滇池沉积物酶可水解磷(EHP)以活性单酯磷为主,其H2O-Po、NaHCO3-Po与NaOH-Po酶可水解磷含量分别在0.11~5.93、0~45.32与0~107.11 mg·kg-1;各形态有机磷EHP含量大小为NaOH-Po>NaHCO3-Po>H2O-Po,且呈现表层>中层>底层趋势;不同深度沉积物有机磷生物有效性大小为表层>中层>底层.3EHP是滇池沉积物生物有效性磷的重要来源,滇池水质保护应考虑沉积物EHP对其水质的影响.当外部磷负荷逐步得到控制后,沉积物EHP生物地球化学循环对维持滇池富营养化具有重要作用. |
| 关 键 词： | 滇池 沉积物 有机磷 垂直分布 EHP 生物有效性 |
| 收稿时间： | 2014/4/16 0:00:00 |
| 修稿时间： | 2014/5/29 0:00:00 |
Characteristics and Bioavailability of Organic Phosphorus from Different Sources of Sediments in Dianchi Lake |
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| XIONG Qiang,JIAO Li-xing,WANG Sheng-rui and PENG Xi-long.Characteristics and Bioavailability of Organic Phosphorus from Different Sources of Sediments in Dianchi Lake[J].Chinese Journal of Environmental Science,2014,35(11):4118-4126. | |
| Authors: | XIONG Qiang JIAO Li-xing WANG Sheng-rui and PENG Xi-long |
| Institution: | State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;State Environmental Protection Key Laboratory for Lake Pollution Control, Research Center of Lake Eco-Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;School of Environment and Chemical Engineering, Nanchang University, Nanchang 330031, China;State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;State Environmental Protection Key Laboratory for Lake Pollution Control, Research Center of Lake Eco-Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;State Environmental Protection Key Laboratory for Lake Pollution Control, Research Center of Lake Eco-Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;School of Environment and Chemical Engineering, Nanchang University, Nanchang 330031, China |
| Abstract: | |
| Keywords: | Dianchi Lake sediments organic phosphorus vertical distribution EHP bioavailability |
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