| 太湖北部沉积物微量元素垂直分布特征及指示意义 |
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| 引用本文： | 黄顺生,华明,廖启林,吴新民,朱佰万,冯金顺.太湖北部沉积物微量元素垂直分布特征及指示意义[J].海洋地质动态,2005,21(8):1-5. |
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| 作者姓名： | 黄顺生 华明 廖启林 吴新民 朱佰万 冯金顺 |
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| 作者单位： | 江苏省地质调查研究院,南京,210018;江苏省地质调查研究院,南京,210018;江苏省地质调查研究院,南京,210018;江苏省地质调查研究院,南京,210018;江苏省地质调查研究院,南京,210018;江苏省地质调查研究院,南京,210018 |
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| 基金项目： | 国土资源部中国地质调查局与江苏省人民政府合作的“江苏省国土生态地球化学调查”项目(200312300008) |
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| 摘 要： | 分析了太湖北部柱状沉积物微量元素含量,以深层沉积物作背景样品,揭示了重金属垂向变化特征及指示意义。中深层沉积物中重金属Pb、Cu、Ni、Cr与Li呈显著正相关,反映了沉积物来源为流域基岩风化产物;表层沉积物中重金属Cu、Ni、Cr与有机碳具有良好正相关性,表明了沉积物受近年来环湖工农业活动影响。中深层沉积物与流域基岩在稀土特征上表现出亲源性;而表层沉积物稀土特征反映了人类活动的影响。
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| 关 键 词： | 微量元素 稀土元素 沉积物 垂直分布 太湖 |
| 文章编号： | 1009-2722（2005）08-0001-05 |
| 收稿时间： | 2005-06-13 |
| 修稿时间： | 2005年6月13日 |
INDICATIVE SIGNIFICANCE: VERTICAL CHARACTERISTICS OF TRACE ELEMENTS IN SEDIMENTS FROM NORTHERN TAIHU LAKE |
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| HUANG Shun-sheng,Hua Ming,LIAO Qi-lin,WU Xin-min,ZHU Bai-wan,FENG Jin-shun.INDICATIVE SIGNIFICANCE: VERTICAL CHARACTERISTICS OF TRACE ELEMENTS IN SEDIMENTS FROM NORTHERN TAIHU LAKE[J].Marine Geology Development,2005,21(8):1-5. |
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| Authors: | HUANG Shun-sheng Hua Ming LIAO Qi-lin WU Xin-min ZHU Bai-wan FENG Jin-shun |
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| Abstract: | Contents of main trace elements were analyzed for core samples from the northern Taihu Lake. Based on the background levels derived from the lower layer of the sediment samples, the authors managed to show the vertical distribution characteristics of heavy metals and their indicative significance for environmental changes. The heavy metals (Ni, Cr, Cu, Pb) in the subsurface show a significant positive relation with lithium, suggesting that heavy metals are present as a result of chemical leaching of bedrocks in the catchments. The distinct positive relations between Ni, Cr, Cu and organic carbon in the surface sediments imply that heavy metals are influenced by industrial and agricultural activities over the last few decades. The geochemical characteristics of the subsurface sediments are similar to those of bedrocks in the catchments, indicating that the subsurface sediments have the same material source as the bedrocks. And the geochemical characteristics of the surface sediments reflect the impact of anthropogenic activities. |
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| Keywords: | trace element rare earth element sediment vertical distribution the Taihu Lake |
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