| 珠江口内伶仃洋沉积物重金属富集特征及其生态危害评价 |
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| 引用本文： | 杨立平,贺玉林,杨志普.珠江口内伶仃洋沉积物重金属富集特征及其生态危害评价[J].海岸工程,2010,29(1):53-58. |
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| 作者姓名： | 杨立平 贺玉林 杨志普 |
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| 作者单位： | 东莞市海洋与渔业环境监测站,广东,东莞,523939 |
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| 摘 要： | 对珠江口内伶仃洋表层沉积物中重金属的质量分数分布、富集状况进行分析,并采用潜在生态危害指数法进行评价。结果表明:Cu,Pb,Hg的质量分数分布由虎门海域沿珠江东西两岸向湾口呈递减趋势,Zn和5种金属累计质量分数则呈现为由西岸向东岸递减,Cd的质量分数分布无明显规律;Cu,Pb,Zn的富集程度较重,富集程度由大到小依次为PbCuZnHgCd;潜在生态危害评价显示,5种元素均属轻微生态危害,危害程度由重到轻依次为HgPbCuCdZn。
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| 关 键 词： | 重金属 沉积物 富集 生态危害 评价 |
Enrichment of Heavy Metals in Surface Sediments in Inner Lingdingyang Firth of the Pearl River Estuary and Assessment of Potential Ecological Risk |
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| YANG Li-ping,HE Yu-ling,YANG Zhi-pu.Enrichment of Heavy Metals in Surface Sediments in Inner Lingdingyang Firth of the Pearl River Estuary and Assessment of Potential Ecological Risk[J].Coastal Engineering,2010,29(1):53-58. |
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| Authors: | YANG Li-ping HE Yu-ling YANG Zhi-pu |
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| Institution: | (Dongguan Marine and Fishery Environment Monitoring Station,Dongguan 523939,China) |
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| Abstract: | This paper deals with the distribution and enrichment of heavy metals in surface sediments of the Inner Lingdingyang Firth of the Pearl River Estuavy.The potential ecological risk index method is used in the risk assessment.The results show that the mass fractions of Cu,Pb and Hg gradually decrease along two sides from the firth end to the mouth.The mass fraction of Zn and the amount of 5 kinds of heavy metals decrease from the west coast to the east,while Cd appears irregular.The enrichments of Cu,Pb and Zn are heavier,and the enrichment degree can be put into an order as follows PbCuZnHgCd.The assessment results show that the 5 kinds of heavy metals cause the light potential ecological risk,and an order of the risk degrees from heavy to light is that HgPbCuCdZn. |
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| Keywords: | heavy metal sediment enrichment ecological risk assessment |
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