| 长江河口及其上海岸带水体沉积物中磷的存在形态 |
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| 引用本文： | 刘敏,陆敏,许世远,侯立军.长江河口及其上海岸带水体沉积物中磷的存在形态[J].地学前缘,2000(Z2). |
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| 作者姓名： | 刘敏 陆敏 许世远 侯立军 |
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| 作者单位： | 华东师范大学地理系教育部城市与环境动态过程开放实验室!上海200062 |
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| 基金项目： | 国家自然科学基金资助项目!(4980 10 18，4977110 1)，高等学校骨干教师资助计划资助项目 |
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| 摘 要： | 讨论了磷的 5种存在形态及其分布规律。河口及岸带水体沉积物中磷主要是以有机磷 (OP)和无机磷 (IP)形式存在的 ,有机磷是有机质的组成部分 ,无机磷又可分为可溶性磷(DP)、铁结合磷 (Fe P)、铝结合磷 (Al P)、钙结合磷 (Ca P)。研究发现 ,沉积物中总磷含量水平在 6 92 79～ 1570 99μg/g之间 ,无机磷含量在 2 2 0 0 2～ 92 8 33μg/g之间 ,占总磷含量的31 8%～ 6 0 5% ,而有机磷含量在 394 89～ 6 4 2 6 6 μg/g之间 ,为总磷含量的 39 5%～ 6 8 2 %。在分析水体沉积物中各形态磷的含量和变化的基础上 ,对磷在时空上的变化、与有机碳、总氮的关系以及污水输入影响等进行了初步的论述 ,并提出沉积物中铁结合磷 (Fe P)和铝结合磷 (Al P)可作为判断污染的指标之一。
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| 关 键 词： | 磷形态 分布 输入 长江河口及其上海岸带 |
PHOSPHORUS SPECIES IN AQUATIC SEDIMENTS AT THE YANGTZE ESTUARY AND SHANGHAI COAST |
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| LIU Min,LU Min,XU Shi yuan,HOU Li jun.PHOSPHORUS SPECIES IN AQUATIC SEDIMENTS AT THE YANGTZE ESTUARY AND SHANGHAI COAST[J].Earth Science Frontiers,2000(Z2). |
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| Authors: | LIU Min LU Min XU Shi yuan HOU Li jun |
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| Abstract: | Five kinds of phosphorus species and their distribution are discussed in the paper. Phosphorus in aquatic sediments at estuarine and coastal area consists mainly of the organic and inorganic phosphorus species,and the organic phosphorus is the main components of organisms while the inorganic forms can be classified into DP,Fe\|P,Al\|P and Ca\|P.This finding shows that TP ranges from 692 79 to 1570 99μg/g,and IP from 220 02 to 928 33μg/g occupying 31 8%～60 5% of TP, and OP from 394 89 to 642 66μg/g occupying 39 5%～68 2% of TP. Based on the concentration levels and the changes of various phosphorus species,and also the spatial and temporal variations, the relation between the organic carbon and total nitrogen and the influence of the sewage discharge on phosphorus distribution are explored. The authors points out that Fe\|P and Al\|P concentration levels in sediments can be used as one of indications for coastal environmental contamination. |
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| Keywords: | phosphorus species distribution inputs the Yangtze Estuary and Shanghai Coast |
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