| 松花江沉积物重金属时空变化与来源分析* |
| |
| 引用本文： | 张凤英,阎百兴,潘月鹏,张丰松,曹会聪.松花江沉积物重金属时空变化与来源分析*[J].云南农业大学学报,2010,25(5):670-675. |
| |
| 作者姓名： | 张凤英 阎百兴 潘月鹏 张丰松 曹会聪 |
| |
| 作者单位： | [1]中国科学院东北地理与农业生态研究所,吉林长春130012 [2]中国科学院地理科学与资源研究所,北京100101 [3]中国科学院大气物理研究所,北京100029 [4]中国科学院研究生院,北京100039 |
| |
| 基金项目： | 国家重点基础发展计划(973)项目 |
| |
| 摘 要： | 以松花江白山至佳木斯段表层沉积物为研究对象，分析沉积物中Cu，Pb，Zn，As，Cr，Cd的分布特征，通过与已有的研究成果相比较，揭示沉积物中重金属的历史变化趋势；同时，采用相关分析和聚类分析方法探讨沉积物中重金属的可能来源。结果表明，各元素的含量分布均表现为自上游向下游逐渐减少的趋势，第二松花江沉积物中各重金属总量普遍高于松花江干流江段沉积物中相应重金属的含量。多数江段沉积物中的Cu，Cr，Cd含量处于背景范围内。沉积物中Zn量含在二松江段（白山-泔水缸）超出了背景范围，但松花江干流江段沉积物中的Zn含量多在背景范围之内。与1998年相比，哈达湾江段的生态环境状况得到了明显改善，但目前哈达湾重金属污染仍较严重，各重金属污染程度的次序为Pb＞Cu＞Cd＞Cr＞Zn。哈尔滨段沉积物中重金属Cu，Zn，Cr，Cd含量年际变化不大，Pb含量的变化趋势表现为自1996年至1999年逐渐降低，1999年至2005年呈逐渐上升的趋势。聚类分析与相关分析的结果均表明，Pb，Cd主要来源于工业排放；Cu，Zn，Cr主要源于自然释放；As主要来源于城市污水或农业生产过程中的排放
|
| 关 键 词： | 松花江 沉积物 变化 重金属来源 |
Spatial and Temporal Variations and Their Source Analysis of Heavy Metals in Sediments of the Songhua River |
| |
| ZHANG Feng-ying,,YAN Bai-xing,PAN Yue-peng,ZHANG Feng-song,CAO Hui-cong.Spatial and Temporal Variations and Their Source Analysis of Heavy Metals in Sediments of the Songhua River[J].Journal of Yunnan Agricultural University,2010,25(5):670-675. |
| |
| Authors: | ZHANG Feng-ying YAN Bai-xing PAN Yue-peng ZHANG Feng-song CAO Hui-cong |
| |
| Affiliation: | 1.Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, Changchun 130012, China; 2. Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences, Beijing 100101, China;3.Insitute of Atomspheric Physics,Chinese Academy of Sciences, Beijing 100029,China;4.Graduate University of Chinese Academy of Sciences, Beijing 100049, China |
| |
| Abstract: | The characteristics of Cu，Pb, Zn, As, Cr, Cd spatial and temporal variations and their sources in surface sediments of the Songhua River from Baishan to Jiamusi were studied. The results showed that the contents of heavy metal in upstream sediments were higher than those in the downstream sediments. The content of each metal in the sediments of the Second Songhua River was higher than those of the main river. The contents of Cu, Cr, Cd were in the background value range of these metals. The contents of Zn were higher than the background value in the sediments of the Second Songhua River, while the contents were lower than the background value in the sediments of the main river. Compared with the data measured in 1998, though the environment of Hadawan had been improved greatly, the content of heavy metals was still in a high level in sediments of Hadawan. The contents of Cu, Zn, Cr and Cd in Haerbin sediments had no significant temporal variations during 1996 to 2005. The content of Pb turned a decrease from 1996 to 1999 and an increase from year 1999 to 2005. Correlation analysis and cluster analysis method were taken to identify the sources of heavy metal contamination, and it showed that Pb and Cd contamination resulted from industrial discharge. Cu, Zn and Cr were mainly from natural sources, as was attributed to urban sewage or agricultural discharge. |
| |
| Keywords: | Songhua River sediment variation source of heavy metal |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《云南农业大学学报》浏览原始摘要信息 |
|
点击此处可从《云南农业大学学报》下载全文 |
|
