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引用本文:陈云增,杨浩,张振克,秦明周,金峰.滇池沉积物金属污染及环境质量评价.湖泊科学,2008,20(4):492-499. DOI:10.18307/2008.0413
CHEN Yun-zeng,YANG Hao,ZHANG Zhen-ke,QIN Ming-zhou,JIN Feng.Metal contamination and quality assessment of Lake Dianchi sediment. J. Lake Sci.2008,20(4):492-499. DOI:10.18307/2008.0413
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滇池沉积物金属污染及环境质量评价
陈云增1,2, 杨浩3, 张振克4, 秦明周1, 金峰2
1.河南大学资源与环境研究所, 开封 475001;2.中国科学院南京土壤研究所土壤与农业可持续发展国家重点实验室, 南京 210008;3.南京师范大学地理科学学院, 南京 210097;4.南京大学海岸与海岛开发教育部重点实验室, 南京 210093
摘要:
对滇池126个采样点沉积物0-5cm、5-10cm和10-20cm中Cu、Zn、Pb、Cr、Cd、Hg和As等7种金属的含量进行了分析测定.用基于多方的基准中阈值效应含量TEC和可能效应含量PEC划分出5个沉积物环境质量等级,并借助灰色聚类分析方法对滇池沉积物环境质量进行了评价.结果表明,滇池沉积物环境质量整体上为Ⅲ类,存在中度的金属污染.其中0-5cm和5-10cm为Ⅲ类沉积物,10-20cm为Ⅱ类沉积物.沉积物环境质量下层优于上层,表明滇池沉积物金属污染仍存在不断加剧的趋势.
关键词:  基于多方的基准  灰色聚类分析  沉积物  滇池
DOI:10.18307/2008.0413
分类号:
基金项目:中国科学院土壤与农业可持续发展国家重点项目(5022505);国家自然科学基金项目(40473052)联合资助
Metal contamination and quality assessment of Lake Dianchi sediment
CHEN Yun-zeng1,2, YANG Hao3, ZHANG Zhen-ke4, QIN Ming-zhou1, JIN Feng2
1.Institute of Resources and Environment, Henan University, Kaifeng 475001, P.R.China;2.State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, P.R.China;3.College of Geography, Nanjing Normal University, Nanjing 210097, P.R.China;4.Key Laboratory of Coast and Island Development of MOE, Nanjing University, Nanjing 210093, P.R.China
Abstract:
Sediment samples collected at 126 sites in Lake Dianchi were analyzed to determine their metal concentrations of copper, zinc, lead, cadmium, chromium, mercury, and arsenic at different depths of the sediment cores (0-5cm, 5-10cm and 10-20cm). Based upon the consensus-based sediment quality guidelines (CBSQGs), the threshold effect concentration (TEC) and the probable effect concentration (PEC), five sedimentary environment quality grades were classified and assessed by employing the method of the grey clustering analysis. Results showed that sedimentary environment quality in Lake Dianchi is mostly in the third grade (III) with a moderate metal contamination. Sediments are the third grade (III) at the depths of 0-5cm and 5-10cm, and the second grade (II) at the depth of 10-20cm. Generally, sedimentary environment qualities in the deeper layers are better than in the upper layers, indicating that metal contamination in Lake Dianchi sediments trends towards worse.
Key words:  Consensus-based sediment quality guidelines  grey clustering analysis  sediment  Lake Dianchi
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