Research on the Accumulative Layers of As and Hg Elements in Columnar Profile of Soil in Beijing City
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摘要: 通过对不同深度土壤中Hg和As含量的测试、污染状况的分析与调查,了解Hg和As元素在不同深度土壤中的累积层位、垂直迁移过程,进而探索Hg和As元素的转移可能对环境造成的潜在危害(即形成“化学定时炸弹”的可能性)。对北京东南郊南苑土壤钻孔剖面研究发现,在深度为13.66-16.00m之间的土壤层,pH剧烈变化,As元素含量明显增高,初步判断该层位是污染物的主要累积层位。Abstract: Based on the contents and distribution of Hg and As elements in the columnar profile of soil in Beijing area, this paper discusses the migration characters, mechanism of accumulation and dissipation in lengthways, and prohes the potential danger that the migration of Hg and As elements may cause to the environment, i. e. forming the possibility of" chemical time bomb". After surveying the soil borehole in Nanyuan, we found that pH value changed acutely and contents of heavy metals increased drastically in the soil stratum from 13. 66 to 16. 00 meters depth, which is deduced as the major accumulation stratum of contamination.
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Key words:
- chemical time bomb /
- soil /
- mercury and arsenic
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[1] 谢学锦,傅家馍,赵其国,等.土壤中的化学污染及其防治对策-环境化学定时炸弹.奋斗的人生光辉的事业.北京:地质出版社,2003.334~340 [2] 谢学锦. 化学定时炸弹研究. 中国地质,1993,(4): 18~19 [3] 中国土壤学会编. 中国土壤科学的现状与展望. 南京:江苏科学技术出版社,1991.22~28 [4] 中国环境监测总站. 环境监测分析方法指南.北京:中国环境科学出版社,1997 [5] 郭小伟,郭旭明.氢化物发生-无色散原子荧光分析方法进展及其在环境分析中的应用.上海环境科学,1995,14(7):28~21 -

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