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| 中国东部主要入海河流As元素分布、来源及影响因素分析 | |
| 引用本文： | 柳青青,杨忠芳,周国华,夏学齐,侯青叶,余涛,翟大兴.中国东部主要入海河流As元素分布、来源及影响因素分析[J].现代地质,2012,26(1):114-124. |
| 作者姓名： | 柳青青 杨忠芳 周国华 夏学齐 侯青叶 余涛 翟大兴 |
| 作者单位： | 1. 中国地质大学地球科学与资源学院,北京,100083 2. 中国地质科学院地球物理地球化学勘查研究所,河北廊坊,065000 3. 浙江省地质调查院,浙江杭州,311203 |
| 基金项目： | 国家专项"全国土壤现状调查及污染防治"下属工作项目 |
| 摘 要： | 为查明中国河流中As等重金属元素的分布规律,于2007—2008年分丰水期和枯水期对中国东部30余条入海河流水体、悬浮物统一进行采样分析。结果表明:东部河流中As元素溶解态含量均值为3.1μg/L,同世界河流相比,明显偏高;且频率分布直方图具有多个峰值,反映出明显的人为污染。利用富集系数的研究表明,悬浮物同样受到较明显的人为污染。As在河水中的迁移形式以溶解态为主,pH值和温度对As的迁移形式有明显影响。流域内岩石类型对河流中As含量影响显著,火山岩、火山碎屑岩类广泛分布的流域河水中As含量明显偏高,花岗岩及中、深变质岩广泛分布的流域河流中As含量则偏小。利用生活、工业污水作为As元素人为来源端元,对海河、黄河、长江、珠江等河流人为源进行了估算,分别为46.7%、18.7%、13.5%、8.3%。 |
| 关 键 词： | 砷元素 分布 来源 人为污染 中国东部河流 |
Distribution, Sources and Impact Factors of Arsenic in the Major Rivers of Eastern China |
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| LIU Qing-qing , YANG Zhong-fang , ZHOU Guo-hua , XIA Xue-qi , HOU Qing-ye , YU Tao , ZHAI Da-xing.Distribution, Sources and Impact Factors of Arsenic in the Major Rivers of Eastern China[J].Geoscience——Journal of Graduate School,China University of Geosciences,2012,26(1):114-124. | |
| Authors: | LIU Qing-qing YANG Zhong-fang ZHOU Guo-hua XIA Xue-qi HOU Qing-ye YU Tao ZHAI Da-xing |
| Institution: | 1.School of Earth Sciences and Resources,China University of Geosciences,Beijing 100083,China; 2.Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang,Hebei 065000,China;3.Zhejiang Institute of Geological Survey,Hangzhou,Zhejiang 311203,China) |
| Abstract: | This paper aims to investigate the concentration,partitioning and sources of As in the major rivers of eastern China.Samples of filtered water and suspended particulate matter were sampled,from more than 30 rivers at the lower reaches in 2007 and 2008.The results indicated that the concentration of dissolved As is averaged to 3.1 μg/L,significantly higher than most other rivers in the world.The frequency distribution histogram with more than one peak showed that most of the rivers have been obviously polluted by anthropogenic activities,which was also confirmed by the enrichment factors(EF) of the suspended particulate matter samples.The partitioning of As in the river was dominated by the dissolved phase other than the particulate one.The distribution of As in the two phases was controlled by water pH and temperature.The concentration of As is also influenced by rock type in the river basins and is significantly higher in the rivers whose catchments were mostly covered by volcanic and pyroclactic rocks,whereas the content was relatively lower in the rivers with their catchments covered by the granite and metamorphic rocks. The sources of anthropogenic pollution of typical rivers were presumed mainly coming from industrial and domestic waste water.The order of main four rivers’ contribution was that,Haihe(46.7%)>Huanghe(18.7%) > Changjiang(13.5%)> Zhujiang(8.3%). |
| Keywords: | arsenic(As) distribution source anthropogenic pollution rivers of eastern China |
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