| 淋洗剂对土壤铅淋洗效率及养分损失的研究 |
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| 引用本文： | 王海娟,宁平,曾向东,瞿广飞,王宏镔,肖青青,李双竹. 淋洗剂对土壤铅淋洗效率及养分损失的研究[J]. 武汉理工大学学报, 2010, 0(5) |
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| 作者姓名： | 王海娟 宁平 曾向东 瞿广飞 王宏镔 肖青青 李双竹 |
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| 作者单位： | 昆明理工大学环境科学与工程学院; |
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| 基金项目： | 云南省环境保护局资助项目(云财建[2004]166); 云南省教育厅青年科研基金(07Y40691); 云南省科技厅面上项目(2009CD033) |
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| 摘 要： | 利用3个浓度的乙二胺四乙酸二钠(EDTA-Na2)、苹果酸(MA)和柠檬酸(CA)3种淋洗剂对某铅选矿厂周围铅污染土壤进行了模拟淋洗研究,测定了铅的去除效率和土壤速效氮、速效磷和有机质的流失量。研究结果表明,研究区域土壤Pb污染较为严重,平均含量达到1 389 mg/kg。在同种浓度处理下,土壤铅的淋洗去除效率依次为EDTA-Na2>柠檬酸(CA)>苹果酸(MA)。随着淋洗液浓度的增加,铅的淋洗去除效率增加,土壤中速效氮、速效磷和有机质的淋洗流失量也逐渐增加。同种浓度下不同淋洗剂淋洗的养分损失量顺序不完全一致。结果表明,在4种淋洗剂中,EDTA-Na2是最有效的土壤铅污染淋洗剂,在强化植物修复方面也有很好的应用前景。
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| 关 键 词： | 土壤淋洗 养分流失 淋洗剂 铅 铅淋洗效率 |
Lead Extraction and Nutrient Runoff During Leaching by Chemical Eluant on Lead-polluted Soils |
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| WANG Hai-juan,NING Ping,ZENG Xiang-dong,QU Guang-fei,WANG Hong-bin,XIAO Qing-qing,LI Shuang-zhu. Lead Extraction and Nutrient Runoff During Leaching by Chemical Eluant on Lead-polluted Soils[J]. Journal of Wuhan University of Technology, 2010, 0(5) |
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| Authors: | WANG Hai-juan NING Ping ZENG Xiang-dong QU Guang-fei WANG Hong-bin XIAO Qing-qing LI Shuang-zhu |
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| Affiliation: | WANG Hai-juan,NING Ping,ZENG Xiang-dong,QU Guang-fei,WANG Hong-bin,XIAO Qing-qing,LI Shuang-zhu(Faculty of Environmental Science , Engineering,Kunming University of Science , Technology,Kunming 650093,China) |
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| Abstract: | As a part of a project on phytoremediation of lead(Pb) in soils around a lead/zinc(Pb/Zn) multimetal mine,the total and sequentially-extracted Pb in soil were investigated.Lead extraction efficiency and soil nutrient leaching by three kinds of eluants,namely Ethylene diamine-tetraacetic acid disodium salt(EDTA-Na2),citric acid(CA),and Malic acid(MA) were assessed.The results showed that soil was moderately polluted,with an average concentration of 1 389 mg/kg.The leaching rate of Pb followed order: EDTA-Na2... |
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| Keywords: | soil leaching soil nutrient runoff eluant lead lead extraction |
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