冀东平原地下水中铁离子来源判别分析研究

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英文篇名：Discriminant analysis on iron ion provenance in groundwater,eastern Hebei Plain 作者：刘裕 ; 陆晨明 ; 马荣 英文作者：LIU Yu;LU Chen-ming;MA Rong;Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences;China University of Geosciences (Beijing); 关键词：地下水 ; 重金属离子 ; 多元线性回归 ; 贡献率 ; 滦河 英文关键词：groundwater;;heavy metal ion;;multiple linear regression;;contribution rate;;Luan river 中文刊名：地质调查与研究 英文刊名：Geological Survey and Research 机构：中国地质科学院水文地质环境地质研究所;中国地质大学(北京); 出版日期：2019-06-15 出版单位：地质调查与研究 年：2019 期：02 基金：中国地质调查局地质调查项目“滦河中下游地球关键带地质调查(DD20160241)”;“冀中南城市群综合地质调查(DD20190252)” 语种：中文; 页：57-64 页数：8 CN：12-1353/P ISSN：1672-4135 分类号：P641.3

摘要

冀东地区是中国最大的铁矿生产基地,剧烈的人类活动和地质环境导致浅层地下水中Fe、Mn、Cr、Pb等离子出现不同程度的超标,尤其是铁离子含量最高可超饮用水标准5～10倍。为定量刻画浅层地下水中重金属离子来源,2017年5-9月在冀东平原滦河中下游典型区内连续采集5期浅层地下水和土壤样品,以铁离子为主要研究对象,运用多元线性回归分析方法,对其污染来源进行定量分析。研究结果表明:浅层地下水中Fe~(3+)离子来源于上游工矿企业、包气带中Fe~(3+)离子的迁移和Fe~(2+)离子的转化,这三种来源在2017年5月对地下水中Fe~(3+)离子的贡献率分别为2.29%、41.8%、55.9%;6月贡献率分别为4.48%、52.58%、42.95%;7月贡献率分别为9.2%、31.55%、59.25%;8月贡献率分别为0.04%、31.43%、68.53%;9月贡献率分别为10.63%、45%、44.37%。研究区内浅层地下水中Fe~(3+)离子主要来源于包气带内Fe~(2+)离子和Fe~(3+)离子的迁移转化,上游工矿企业对其并无显著影响。
        Eastern Hebei Province is the largest iron ore production base in China. Violent anthropogenic activities and geological environment lead to different degrees of excess of Fe, Mn, Cr and Pb ions in shallow groundwater. In particular, the iron ion content can be 5 ～ 10 times higher than the drinking water standard. In order to quantitatively characterize the provenance of heavy metal ions in shallow groundwater in the typical area of the middle and lower reaches of the Luan River in the Eastern Hebei Plain, five consecutive periods samples in the shallow groundwater and soil were collected from May to September, in 2017. Taking iron ion as the main research object, the multiple linear regression analysis method was used to quantitatively describe the sources of pollution. The results of research demonstrate that Fe~(3+) ions in shallow groundwater are derived from the upstream industrial waste water, the migration of Fe~(3+) ions and the transformation of Fe~(2+) ions in the vadose zone.The contribution rates of the above three sources to Fe~(3+) ions in shallow groundwater in May 2017 were 2.29%,41.8%, and 55.9%, respectively. The contribution rates in June were 4.48%, 52.58%, and 42.95%, respectively;The contribution rates in July were 9.2%, 31.55%, and 59.25%, respectively. The contribution rates in August were 0.04%, 31.43%, and 68.53%, respectively, The contribution rates in September were 10.63%, 45%, and 44.37%, respectively. The Fe~(3+) ions in the shallow groundwater in the study area are mainly derived from the migration and transformation of Fe~(2+) ions and Fe~(3+) ions in the vadose zone, and the upstream industrial waste water has no significant effect on it.

引文

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