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中国农学通报

中国农学通报 ›› 2012, Vol. 28 ›› Issue (2): 267-272.doi: 10.11924/j.issn.1000-6850.2011-2309

所属专题： 土壤重金属污染

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

长株潭城市群土壤pH值与重金属污染的研究

彭晓春 岳建华 陈志良 董家华 吴彦瑜 杨兵   

  • 收稿日期:2011-08-08 修回日期:2011-09-19 出版日期:2012-01-15 发布日期:2012-01-15
  • 基金资助:

    “十一五”国家科技支撑课题

The Correlation of Heavy Metal with pH Value in Soils from Changsha-Zhuzhou-Xiangtan Urban Agglomeration

  • Received:2011-08-08 Revised:2011-09-19 Online:2012-01-15 Published:2012-01-15

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摘要：

为了研究土壤样品pH值和土壤中重金属含量的相关关系，对长株潭城市群60个土壤样品中pH值、有机质含量和重金属含量进行分析。结果表明：长株潭城市群的60个采样点中，13.3%的土壤样品pH值<5.0，35%的土壤样品的pH在5.0~6.5之间，41.7%的土壤样品pH值在6.5~7.5之间，10%的土壤样品pH在7.5~8.5之间，无强碱性样品。长株潭地区不同土壤pH范围的重金属平均含量不同，随着土壤pH由强酸性、酸性到中性的升高，重金属含量显著提高，但当pH超过7.5，碱性土壤中的重金属含量呈下降趋势。

关键词: 降水量, 降水量, 中雨以上, 变化, 分析

Abstract:

In order to investigate the correlations of heavy metal with pH value in soils, the pH value, organic matter contents and heavy metal concentration of 60 soil samples collected from Changsha-Zhuzhou-Xiangtan urban agglomeration were analyzed. The results showed that the pH of 13.3% samples were lower than 5.0, 35% of samples were 5.0-6.5, 41.7% of samples were 6.5-7.5 and 10% of samples were 7.5-8.5. In conclusion, different mean heavy metal concentrations in soil samples were achieved during various pH ranges. The heavy metals contents increased significantly with the pH of soils increased from strong acidic, acidic soils to neutral soils. However, the heavy metal contents decreased in alkaline soil samples when the pH value over 7.5.

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