| 青海民和-海石湾一带土壤重金属异常成因研究 |
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| 引用本文： | 章巧秋,谢正苗,姬丙艳,张亚峰,唐俊红.青海民和-海石湾一带土壤重金属异常成因研究[J].岩石矿物学杂志,2011,30(6):1125-1131. |
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| 作者姓名： | 章巧秋 谢正苗 姬丙艳 张亚峰 唐俊红 |
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| 作者单位： | 1. 杭州电子科技大学,浙江杭州,310018
2. 青海省第五地质矿产勘查院,青海西宁,810012 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 青海省多目标区域地球化学调查发现,民和-海石湾一带的狭长谷地沿109国道两侧分布的土壤中存在以Cd、Pb、Hg、Cr等重金属元素为主组成的综合异常。空间上各异常元素套合较好,而且综合异常面积较大,异常元素衬度较高。经相关分析,Cr元素与土壤常量组分显著相关,与SiO2含量呈负相关关系,同时,Cr元素水平剖面上城区含量明显高于其他地方,垂向剖面上呈现元素表层略微富集的现象;Cd与有机碳之间存在显著性相关关系,与TFe2O3不存在显著性相关关系;Pb元素在80 cm以上的土壤中,异常区土壤中的含量明显高于非异常区,Pb异常基本存在于表层土壤中;Hg元素含量表层富集明显,城区土壤中的Hg含量远高于其他地方。研究结果表明,人为源输入是导致该地区Cd、Pb、Hg异常的主要因素,而Cr元素异常的形成具有双成因性质,在较高自然背景上产生了人为源叠加。因此,加强异常区工业"三废"的控制和管理,是防止异常面积扩大的有效措施。
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| 关 键 词： | 多目标区域地球化学调查 土壤 元素异常 土壤质地 |
| 收稿时间： | 2010/12/11 0:00:00 |
| 修稿时间： | 2011/4/28 0:00:00 |
A study of the origin of heavy metal anomaly in soil of Minhe_Haishiwan area, Qinghai Province |
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| ZHANG Qiao-qiu,XIE Zheng-miao,JI Bing-yan,ZHANG Ya-feng and TANG Jun-hong.A study of the origin of heavy metal anomaly in soil of Minhe_Haishiwan area, Qinghai Province[J].Acta Petrologica Et Mineralogica,2011,30(6):1125-1131. |
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| Authors: | ZHANG Qiao-qiu XIE Zheng-miao JI Bing-yan ZHANG Ya-feng and TANG Jun-hong |
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| Institution: | ZHANG Qiao-qiu1,XIE Zheng-miao1,JI Bing-yan2,ZHANG Ya-feng2 and TANG Jun-hong1(1.Hangzhou University of Electronics Technology,Hangzhou 310018,China,2.No.5 Institute of Geological and Mineral Exploration,Qinghai Bureau of Geology and Mineral Resources,Xining 810012,China) |
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| Abstract: | This paper reports some results of multi-purpose geochemical mapping in Qinghai Province.Soil heavy metal anomalies of such elements as Cd,Pb,Hg and Cr were detected in the narrow valley of Minhe and Haishiwan,along Road 109.The heavy metal anomalies exhibit features of relatively large anomalous area and high thresholds of anomalous elements.The results of correlation analysis show that Cr is significantly associated with soil constant components and negatively related to SiO2.Cr is slightly concentrated i... |
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| Keywords: | multi-purpose regional geochemical survey soil element anomaly soil texture |
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