Phytoremediation potential of three aquatic macrophytes in manganese‐contaminated water
Phytoremediation potential of three aquatic macrophytes in manganese‐contaminated water
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DOI：
10.1111/j.1747-6593.2011.00293.x
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发表时间：
2012-09
影响因子：
2
通讯作者：
J. Hua;Chuisheng Zhang;Yunlong Yin;Ruirui Chen;Xingxiang Wang
中科院分区：
文献类型：
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作者：
J. Hua;Chuisheng Zhang;Yunlong Yin;Ruirui Chen;Xingxiang Wang
研究了凤眼莲（Eichhornia crassipes（Mart.）索尔姆斯、水莴苣（Pistia stratiotes L.）在0（对照）、50、200、400 mg/L锰水平下，研究了不同锰浓度对水稻幼苗和水花生幼苗生长的影响。随着锰暴露量的增加，供试植物表现出类似的反应，相对生长速率下降，植物锰浓度增加。相比之下，水莴苣在所有Mn处理的处理中具有显著更高的总Mn浓度、芽富集因子和转运因子，并且在200和400 mg/L Mn浓度下具有更大的总Mn去除。在大多数情况下，锰污染显着降低镁浓度为所有三个工厂。同时，随着外源锰浓度的增加，水生莴苣体内Fe、Cu和Zn含量呈增加趋势，这可能是水生莴苣体内Mn含量较高的原因之一。结果表明，水浮莲作为锰污染沃茨的植物修复植物具有良好的应用前景。
Manganese (Mn) uptake capacities of water hyacinth (Eichhornia crassipes (Mart.) Solms, water lettuce (Pistia stratiotes L.) and slligator alternenthera (Alternanthera philoxeroides) were investigated with four Mn levels: 0(control), 50, 200, 400 mg/L. With increased Mn exposure, the tested plants showed similar responses with a decrease in relative growth rate and an increase in plant Mn concentrations. Comparatively, water lettuce had the significantly higher total Mn concentrations, shoots enrichment factor and translocation factor at all Mn‐treated treatments and the much greater total Mn removal at concentrations of 200 and 400 mg/L Mn. In most cases, Mn pollution significantly decreased Mg concentrations for all three plants. Concomitantly, increment trends of Fe, Cu and Zn concentrations were observed for water lettuce with the increasing external Mn concentrations, which could partly contribute to its higher Mn concentrations. The results indicated that water lettuce have standout potentials as a phytoremediation plant for Mn contaminated waters.