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湖泊科学  2008 

滇池沉积物金属污染及环境质量评价

DOI: 10.18307/2008.0413

Keywords: 基于多方的基准,灰色聚类分析,沉积物,滇池

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Abstract:

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.

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