| 淀山湖沉积物孔隙水中重金属元素分布特征 |
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| 引用本文： | 王小庆,郑乐平,孙为民.淀山湖沉积物孔隙水中重金属元素分布特征[J].中国环境科学,2004,24(4):0-0. |
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| 作者姓名： | 王小庆 郑乐平 孙为民 |
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| 作者单位： | 上海大学环境工程与科学系 上海200072 |
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| 基金项目： | 上海科技“启明星”计划项目(00QG14003)，上海市高等学校科技基金资助项目(QF57) |
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| 摘 要： | 用原子吸收光谱仪测定了淀山湖上覆水体和沉积物孔隙水中Pb、Cu、Cr、Cd、Fe和Mn的浓度.结果表明,上覆水体中及沉积物孔隙水中重金属元素浓度由高到低的顺序,夏季为Fe>Mn>Cr(Cu)>Pb>Cd,冬季为Mn>Fe>Cr(Cu)>Pb>Cd.各种重金属元素在孔隙水中的浓度比上覆水体中的浓度高得多,且在孔隙水中随深度均呈现典型的峰型分布;但随季节的变化,峰值发生位移.重金属元素的浓度在沉积物-水界面处变化明显,夏季沉积物中的Cr对上覆水体水质的影响较大.
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| 关 键 词： | 上覆水 孔隙水 重金属 |
| 文章编号： | 1000-6923(2004)04-0400-05 |
| 收稿时间： | 1900-01-01; |
| 修稿时间： | 2003年11月14 |
The distribution characteristics of heavy metal elements in the pore water of sediment, Dianshan Lake |
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| WANG Xiao-qing,ZHENG Le-ping,SUN Wei-min.The distribution characteristics of heavy metal elements in the pore water of sediment, Dianshan Lake[J].China Environmental Science,2004,24(4):0-0. |
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| Authors: | WANG Xiao-qing ZHENG Le-ping SUN Wei-min |
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| Abstract: | The concentrations of Pb, Cu, Cr, Cd, Fe and Mn in the overlying water and the pore waters of Dianshan Lake sediment were determined using PERKIN-ELMER 5100PC AAS. The orders of the heavy metal element concentrations are Fe>Mn>Cr(Cu)>Pb>Cd in summer and Mn>Fe>Cr(Cu)>Pb>Cd in winter. The concentrations of these elements in the pore water were much higher than those in the overlying water and showed a typical peak distribution with depth; but the position of maximum peak value move with the seasonal variation. At the water-sediment interface, the concentrations of these elements had an obvious variation. In summer, Cr in the sediment had greater influence on the quality of overlying waters. |
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| Keywords: | overlying water pore water heavy metal |
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