| 水葱修复土壤镉污染潜力的研究 |
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| 引用本文： | 李硕,刘云国,李永丽,徐卫华,李欣.水葱修复土壤镉污染潜力的研究[J].环境污染与防治,2006,28(2):84-86. |
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| 作者姓名： | 李硕 刘云国 李永丽 徐卫华 李欣 |
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| 作者单位： | 湖南大学环境科学与工程系,湖南,长沙,410082 |
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| 基金项目： | 浙江省湖州市自然科学基金
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国家发展和改革委员会资助项目 |
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| 摘 要： | 野外观察与研究发现水葱(Scirpus tabernaemontani G.)可以耐受土壤中高浓度的重金属污染,并对镉(Cd)有很高的生物富集量.实验室水培试验研究了两个主要因素,营养液pH与Cd含量,对水葱生物量以及Cd富集效果的影响.结果表明,它可耐受高浓度Cd (30 mg/L)和大范围pH变化 (3.7～7.7).当营养液pH为4.7, Cd为25 mg/L时,水葱富集的Cd达到最大值:地上部分264.71 mg/kg,地下部分234.39 mg/kg,平均转运系数1.13.这显示了它用于植物修复Cd污染土壤的潜力.
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| 关 键 词： | 植物修复 水葱 镉 超富集植物 |
| 收稿时间： | 2005-05-12 |
| 修稿时间： | 2005-05-12 |
The potential of Cd accumulator herb, Scirpus tabernaemontani G. for phytoremediation |
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| Li Shuo,Liu Yunguo,Li Yongli,Xu Weihua,Li Xin.The potential of Cd accumulator herb, Scirpus tabernaemontani G. for phytoremediation[J].Environmental Pollution & Control,2006,28(2):84-86. |
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| Authors: | Li Shuo Liu Yunguo Li Yongli Xu Weihua Li Xin |
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| Abstract: | The Softstem Bulrush seedlings were collected from the Yongzhou lead-zinc mine tails soil in Hunan province. In this experiment, Softstem Bulrush (Scirpus tabernaemontani G.), a perennial herb, was used to demonstrate its capability of Cd-phytoremediation. The hydroponics experiments showed that two factors, solution pH and medium Cd concentration, affected the plant biomass growth and Cd-extraction in 30 days. The herb could tolerate high lever of Cd (30 mg/L) and widespread pH value shifting. The highest Cd-extractions are 264.71 mg/kg (aboveground parts) and 234.39 mg/kg (underground parts), with the average translation coefficient 1.13. |
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| Keywords: | Phytoremediation Scirpus tabernaemontani G Cadmium Hyperaccumulator |
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