贵阳市表层土壤中镍的基线及污染研究
Geogenic Distribution and Baseline Concentrations of Ni in Surface Soil of Guiyang, China
查看参考文献22篇
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文摘
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以贵州省贵阳市8 046 km2为研究区域,将土壤中镍的空间分布规律与环境地球化学机理研究相结合,建立镍的区域土壤环境地球化学基线,并进行污染分析.通过对332个样品的分析,得到以下结论:贵阳市表层土壤中镍的基线值为17.0 mg/kg,大于57.0 mg/kg的样品可能遭受人为污染.地质累积指数分析结果显示贵阳市19.2%的表层土壤未受镍的污染,63.7%的表层土壤在无污染到中度污染之间,16.8%的中度污染,只有0.3%的表层土壤介于中度污染到强污染之间.污染程度指数分析则显示贵阳市64%的表层土壤未受到镍的污染,镍的污染程度最大为1.56,总污染程度小于0,即总体未受到污染. |
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其他语种文摘
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The baseline concentration of Ni in the surface soil of Guiyang, Guizhou has been established. Analyses of Ni contamination were done. By statistical analysis, we have established that the baseline of Ni in the surface soil of Guiyang is 17. 0 mg/kg and that the soil with Ni content over 57. 0 mg/kg may suf-fer contamination caused by human activities. Geoaccumulation Index analysis of 332 soil samples indicated that 19. 2% of the soil has not suffered from Ni contamination, 63. 7% is in the category between non-pol-lution and mid-pollution, 16. 8% falls into the category of mid-pollution, and only 0. 3% suffers from mid-pollution to severe pollution. The maximal of Ni contamination degree (CD) is 1. 56. CD analysis indicated that the surface soil without Ni pollution accounts for 64% of the total. The total CD is below zero. It is, therefore, concluded that on. the whole soil in Guiyang is Ni pollution free. |
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来源
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西南大学学报. 自然科学版
,2007,29(3):115-120 【扩展库】
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关键词
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镍
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基线
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污染
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贵阳
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土壤
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地址
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1.
贵州师范大学,地理与生物科学学院, 贵州, 贵阳, 550001
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中国科学院地球化学研究所, 环境地球化学国家重点实验室, 贵州, 贵阳, 550001
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1673-9868 |
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学科
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环境科学基础理论 |
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基金
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贵州省自然科学基金
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文献收藏号
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CSCD:2730606
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