| 外源铜在土壤中的老化研究进展 |
| 其他题名 | Aging of Exogenous Copper in Soils:A Review
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| 周世伟
; 徐明岗
; 马义兵
; 韦东普
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| 发表期刊 | 土壤
 |
| ISSN | 0253-9829
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| 2008-12-31
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| 卷号 | 41期号:02 页码:153-159 |
| 关键词 | 老化
外源cu
扩散
聚合/沉淀
包裹
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| 产权排序 | 中国农业科学院农业资源与农业区划研究所;中国科学院烟台海岸带研究所 |
| 通讯作者 | 周世伟
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| 作者部门 | 生物资源实验室
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| 英文摘要 | 水溶性Cu添加到土壤后,其可浸提性、生物有效性或毒害随时间逐渐降低,这个过程称为老化过程.田间污染土壤中的Cu与人工新添加的Cu在生物有效性上存在着明显的差异,因此,在生态风险评价和环境质量标准制定中,考虑Cu的老化过程显得十分必要.而且,它对污染土壤的管理和修复也有重要的指导意义.本文详细综述了外源Cu在土壤中的老化机理及影响因素,指出老化过程主要受扩散作用、聚合/沉淀作用和包裹作用共同控制,而且在长期老化阶段,微孔扩散成主导作用机理;pH、温度、有机质和土壤类型是老化的主要影响因子,其中pH影响聚合/沉淀作用和扩散作用,温度主要影响扩散作用,而有机质对上述各个机理都有影响. |
| 中文摘要 | The extractability, bioavailability and/or toxicity of water-soluble exogenous Cu (Cu added to soils) decrease with the contact time, which is termed as "aging", which means a great difference in the Cu bioavailability between field contaminated soils and freshly spiked soils, thus, it is very necessary to understand the aging process of Cu in the assessment of ecological risk and the establishment of environmental quality criteria, moreover, it is also helpful in guiding the management and remediation of contaminated soils. This paper was reviewed detailedly the mechanisms and influential factors for the aging process of exogenous Cu in soils, and it was concluded that the aging process of exogenous Cu was mainly controlled by diffusion, surface nucleation/precipitation and occlusion, and micropore-diffusion played the dominant role during long-term aging; the main influential factors of the aging of exogenous Cu included soil pH, temperature, organic matter and soil type, where pH affected surface nucleation/precipitation and diffusion, temperature affected mainly diffusion, and organic matter affected all reactions mentioned above. Also in this paper some perspectives for further research in this field were presented. |
| 资助机构 | 国家自然科学基金项目(40571071); 国家重点基础研究发展规划项目(2002CB410809); 国家863计划项目(2006AA06Z360)资助
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| 收录类别 | CSCD
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| 语种 | 中文
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| CSCD记录号 | CSCD:3613712
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.yic.ac.cn/handle/133337/4139
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| 专题 | 海岸带生物学与生物资源利用重点实验室_海岸带生物学与生物资源保护实验室
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推荐引用方式
GB/T 7714 |
周世伟,徐明岗,马义兵,等. 外源铜在土壤中的老化研究进展[J]. 土壤 ,2008,41(02 ):153-159.
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| APA |
周世伟,徐明岗,马义兵,&韦东普.(2008).外源铜在土壤中的老化研究进展.土壤 ,41(02 ),153-159.
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| MLA |
周世伟,et al."外源铜在土壤中的老化研究进展".土壤 41.02 (2008):153-159.
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