| 珠江口底质重金属分布特征及其生态危害性评价 |
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| 引用本文： | 李团结,龙江平,刘激.珠江口底质重金属分布特征及其生态危害性评价[J].热带地理,2009,29(4). |
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| 作者姓名： | 李团结 龙江平 刘激 |
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| 作者单位： | 1. 国家海洋局南海工程勘察中心,广州,510300
2. 国家海洋局第二海洋研究所,杭州,310012 |
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| 摘 要： | 对珠江口57个表层沉积物的4项重金属元素Cr、Pb、Zn、Cu进行分析,结果表明:其含量分布在珠江口西侧高于东侧,在内伶仃岛以南呈明显的东南向降低趋势;重金属元素与常量元素TiO2、MnO、Fe2O3、P2O5、Al2O3呈正相关,以Fe2O3、P2O5最为显著:与粘土含量也呈正相关.研究结果还表明,底质环境中Cr、Pb、Zn、Cu含量近年来呈增长趋势,存在不同程度的污染,生态危害性大小为Pb>Cu>Cr>Zn,个体和总体危害程度轻微.
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| 关 键 词： | 珠江口 底质 重金属 分布特征 生态危害 |
Distribution Characteristics and Ecological Assessments of Heavy Metals in Surface Sediments of the Pearl River Estuary |
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| LI Tuanjie,LONG Jiangping,LIU Ji.Distribution Characteristics and Ecological Assessments of Heavy Metals in Surface Sediments of the Pearl River Estuary[J].Tropical Geography,2009,29(4). |
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| Authors: | LI Tuanjie LONG Jiangping LIU Ji |
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| Institution: | 1.South China Sea Marine Engineering Surveying Cente;State Oceanic Administration;Guangzhou 510300;China;2.Second Institude of Oceanography state Oceanic adminstation;Hangzhou 310012;China |
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| Abstract: | In order to uncover the distribution and potential environmental risk in sediments of the heavy metal elements,Cr,Pb,Zn and Cu,fifty-seven surface sediment samples collected from the Pearl River Estuary are analyzed.The results show that the percentages of every elements are higher on west side of the Pearl River Estuary than the one on east side;however,they appear a clear descending tendency from northwest to southeast to south of the inner Lingding Island.There is a positive correlation between the perce... |
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| Keywords: | Pearl River Estuary surface sediment heavy metals distribution characteristics ecological assessment |
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