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    武汉市东湖沉积物的磁性特征与重金属含量之间的关系

    刘振东 刘庆生 汪汉胜 王志勇 杨涛 曹国栋

    刘振东, 刘庆生, 汪汉胜, 王志勇, 杨涛, 曹国栋, 2006. 武汉市东湖沉积物的磁性特征与重金属含量之间的关系. 地球科学, 31(2): 266-272.
    引用本文: 刘振东, 刘庆生, 汪汉胜, 王志勇, 杨涛, 曹国栋, 2006. 武汉市东湖沉积物的磁性特征与重金属含量之间的关系. 地球科学, 31(2): 266-272.
    LIU Zhen-dong, LIU Qing-sheng, WANG Han-sheng, WANG Zhi-yong, YANG Tao, CAO Guo-dong, 2006. Relationship between Magnetic Properties and Heavy Metals of Sediments in Donghu Lake, Wuhan, China. Earth Science, 31(2): 266-272.
    Citation: LIU Zhen-dong, LIU Qing-sheng, WANG Han-sheng, WANG Zhi-yong, YANG Tao, CAO Guo-dong, 2006. Relationship between Magnetic Properties and Heavy Metals of Sediments in Donghu Lake, Wuhan, China. Earth Science, 31(2): 266-272.

    武汉市东湖沉积物的磁性特征与重金属含量之间的关系

    基金项目: 

    国家自然科学基金项目 40474025

    国家自然科学基金项目 40174007

    中国科学院重要方向性项目 KZCX3SW132

    详细信息
      作者简介:

      刘振东(1966-),男,讲师,博士研究生,主要从事环境磁学方面的研究.E-mail: lqs321@cug.edu.cn

    • 中图分类号: P631

    Relationship between Magnetic Properties and Heavy Metals of Sediments in Donghu Lake, Wuhan, China

    • 摘要: 对武汉市东湖主湖区的郭郑湖和塘林湖114个沉积物样品的磁化率与代表性样品的频率磁化率系数、磁滞回线参量和重金属元素进行系统分析, 综合区域环境背景, 探讨应用岩石磁性方法技术评价大型城市内陆湖泊沉积物污染程度的可行性及其效果.结果表明, 在主成分中, 郭郑湖沉积物没有一个主成分占绝对优势, 仅有少数重金属元素含量与磁化率相关, 磁化率χ与重金属富集强度的相关性较差; 而塘林湖沉积物有一个“工业源”的主成份占绝对优势, Fe (全铁)、Co、V、Mn、Ti、Ba、Cr、Ni、Cu等元素与饱和等温剩磁SIRM、χ关系密切(相关系数大于0.87).郭郑湖与塘林湖的沉积物的饱和等温剩磁与重金属富集强度的相关程度高于磁化率, 因此, 可以用其(SIRM) 作为环境污染程度的指示参量.

       

    • 图  1  东湖沉积物采样点分布

      Fig.  1.  Location of samples of sediments in Donghu Lake

      图  2  东湖沉积物磁化率剖面(1~38位于郭郑湖, 39~75位于塘林湖)

      Fig.  2.  Susceptibility profile of sediments in Donghu Lake

      图  3  东湖沉积物主成分

      a,b.表示郭郑湖;c,d.表示塘林湖

      图  4  东湖沉积物SIRM和重金属富集强度剖面

      1~38.郭郑湖;39~74.塘林湖

      图  5  东湖沉积物SIRM/Ms剖面(a)和Hcr/Hc剖面(b)

      1~38.郭郑湖;39~74.塘林湖

      图  6  东湖沉积物磁化率(a, b)和SIRM (c, d) 与重金属富集强度相互关系散点

      a,b.表示郭郑湖;c,b.表示塘林湖

      表  1  东湖沉积物磁性参数统计结果

      Table  1.   Statistics of the magnetic parameters of sediments in Donghu Lake

      表  2  东湖沉积物重金属元素含量统计结果

      Table  2.   Statistics of the heavy metal contents of sediments in Donghu Lake

      表  3  郭郑湖磁参数与重金属元素相关系数

      Table  3.   Correlation coefficients between magnetic parameters and heavy metal content in Guozheng Lake

      表  4  塘林湖沉积物磁参数与重金属相关系数

      Table  4.   Correlation coefficients between magnetic parameters and heavy metal content in Tanglin Lake

      表  5  东湖沉积物磁参数与重金属富集强度的相关系数

      Table  5.   Correlation coefficients between magnetic parameters and enrichments of heavy metals in Donghu Lake

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    • 收稿日期:  2005-05-28
    • 刊出日期:  2006-03-25

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