| 非饱和土壤中氟离子迁移规律实验研究 |
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| 引用本文： | 郑冬梅,孙丽娜,李晓颖.非饱和土壤中氟离子迁移规律实验研究[J].水土保持学报,2010,24(1). |
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| 作者姓名： | 郑冬梅 孙丽娜 李晓颖 |
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| 作者单位： | 沈阳大学污染环境的生态修复与资源化技术教育部重点实验室,沈阳,110044 |
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| 基金项目： | 辽宁省辽河流域农业地质调查项目(1212010511209); 城市重污染河道综合整治技术研究(2008ZX07208-003-004) |
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| 摘 要： | 采用实验室土柱法,在3种pH(4.0,5.5,7.5)淹灌和降雨条件下,研究了非饱和土壤中氟离子的迁移转化。结果表明:不同pH降雨、淹灌条件下,随着淋洗时间的增加,淋滤液中的可溶性氟含量逐渐增大,特别是pH5.5和pH7.5淋滤液中氟的变化规律明显。淹灌条件下淋滤液中氟含量低于降雨条件下淋滤液的氟含量。淋溶前后土壤表层的氟含量变化明显,淋滤后表层土壤表现为淋溶状态。土壤pH值是影响土壤氟存在形态的重要因素之一,对土壤可溶性氟有着重要的影响。
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| 关 键 词： | 非饱和土壤 氟离子 淹灌 降雨 |
Studies on F-transport Rules in Unsaturated Soil on Base of Simulation Experiments |
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| ZHENG Dong-mei,SUN Li-na,LI Xiao-ying.Studies on F-transport Rules in Unsaturated Soil on Base of Simulation Experiments[J].Journal of Soil and Water Conservation,2010,24(1). |
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| Authors: | ZHENG Dong-mei SUN Li-na LI Xiao-ying |
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| Institution: | ZHENG Dong-mei,SUN Li-na,LI Xiao-ying (Shenyang University,Key Laboratory of Eco-remediation of Contaminated Environment , Resource Reuse,Shenyang 110044) |
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| Abstract: | Transport rules of fluorine ion in unsaturated soil were studies in laboratory using soil column on condition of different pH (4.0,5.5,and 7.5) flush irrigation and stimulated precipitation. Results indicated that dissoluble fluorine in eluatet was increasing with leaching time on different condition,especially remarkable when pH was at 5.5 and 7.5. Fluorine contents in eluate on flush irrigation were higher than those on precipitation condition. Fluorine contents of the surface soil varied significantly be... |
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| Keywords: | unsaturated soil fluorine ion flush irrigation precipitation |
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