东湖沉积物的磁性展布及其与污染源的关系  

Relationship between Magnetic Properties and Pollution Sources of Sediments in Donghu Lake

作　　者：吴洁[1] 刘振东[1] 

机构地区：[1]安阳工学院,河南安阳455000

出　　处：《昆明理工大学学报（理工版）》2007年第6期65-69,共5页Journal of Kunming University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金(项目编号:40474025;40174007);中国科学院重要方向性项目(项目编号:KZCX3-SW-132)资助

摘　　要：通过对武汉市东湖沉积物114个样品的磁性分析,结合扫描电子显微镜图像和区域环境背景,发现东湖主湖区之一的郭郑湖沉积物的磁性载体相对含量较少,颗粒粗细不均,相当一部分来自于人的污染.相对于郭郑湖,另一个子湖塘林湖沉积物的磁性载体含量较多,且来源以工业尘埃降落为主.利用环境磁学方法,可以评价污染物质的来源对城市内陆湖泊的影响等.Through systematically analysis of magnetic carrier properties of 114 samples of Donghu Lake sediments, combined with the images of scanning electron microscopy （SEM） and the integrated regional environmental background, it is found out that the sediments of Guozheng Lake, which is one main sub - lake of Donghu Lake, have less magnetic carriers with uneven grain size, which mainly come from artificial pollution. The sediments of Tanglin Lake, another main sub - lake of Donghu lake, are found to have more magnetic carrier and to be mainly from industry dust. It is argued that the influence on inner lakes can be estimated through inspecting the environmental magnetic properties of pollutant sources.

关 键 词：沉积物 磁性特征 武汉市东湖 

分 类 号：X824[环境科学与工程—环境工程]