| 海河·永定新河·独流减河河口水环境现状分析 |
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| 引用本文： | 刘琼琼,李莉,刘红磊,刘金霞,邵晓龙,于丹,江文渊.海河·永定新河·独流减河河口水环境现状分析[J].安徽农业科学,2013,41(4):1689-1692. |
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| 作者姓名： | 刘琼琼 李莉 刘红磊 刘金霞 邵晓龙 于丹 江文渊 |
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| 作者单位： | 1. 天津市环境保护科学研究院,天津,300191
2. 天津市宁河县环保局,天津,301500 |
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| 基金项目： | 水利部公益性行业科研专项经费项目-"滨海河口生态系统恢复关键技术研究"子课题 |
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| 摘 要： | 对海河、永定新河、独流减河河口实地采集的水样和沉积物中的CODMn、TN、TP及重金属含量进行分析。结果表明,海河、永定新河、独流减河河口水质污染非常严重,多超过V类水质标准;对"三河口"沉积物污染进行分析,重金属的综合污染特征显示,Cu、Zn、Cr处于中污染水平,Pb、Hg、Cd和As都处于低污染水平,沉积物重金属污染程度顺序依次为Cu>Cr>Zn>As>Hg>Pb>Cd。通过主成分分析(PCA)和相关性分析,进一步研究沉积物重金属的相关性及来源,8种重金属污染物可由3个主成分反映84.93%,贡献率分别为47.53%、21.86%和15.54%;Cu、Zn、Hg、Cd具有较强相关性;海河河口沉积物重金属多因子污染度最大(Cd值为7.66),其次为永定新河(Cd值为6.18),独流减河重金属多因子污染度最小(Cd值为4.83)。
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| 关 键 词： | 河口 主成分分析(PCA) 沉积物 重金属 |
Analysis on the Water Environment of the Estuaries of Haihe River, Yongding New River, and Duliujian River |
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| Institution: | LIU Qiong-qiong et al (Tianjin Academy of Environmental Science, Tianjin 300191) |
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| Abstract: | According to the analysis on the contents of CODM,, TN, TP and heavy metal in the water samples and sediments collected from es- tuaries of Haihe River, Yongding New River and Duliujian River, it reaches a result that the water of these estuaries is heavily polluted, most of which exceeds the water-quality standard of class V. Based on the analysis on sediment pollution in these ＂three estuaries＂, the comprehen- sive pollution characteristics of heavy metal reveal that the three estuaries reach middle pollution level in terms of copper, zinc and chromium pollution, and stay at low pollution level in the aspects of lead, mercury, cadmium and arsenic. The extent of heavy metals followed the order： Cu 〉 Cr 〉 Zn 〉 As 〉 Hg 〉 Pb 〉 Cd. Heavy metal contamination source analysis though principal component analysis（PCA） revealed that the contribution rates of the top three principal components were 47. 53% , 21. 86% and 15. 54%. The sediment from the estuary of Haihe River contains seven heavy metals with biggest concentration coefficients （ Cd = 7.66 ） , and Yongding New River takes the second place （ Cd = 6.18 ）. Besides, the sediment from Duliujian River includes theheavy metals with relatively smaller concentration coefficients（ Cd =4.83 ）. |
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| Keywords: | Estuary Principal component analysis（PGA） Sediments Heavy metal |
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