Int J Phytoremediation. 2014;16(2):167-78. doi: 10.1080/15226514.2012.759535.
The effects of different concentrations of P and N, added separately or combined, on the Cr(III) accumulation capacity of P. stratiotes were studied. Plants and pond water with the addition of contaminant(s) were placed in plastic aquaria. Cr concentration was 5 mg L(-1), while P and N concentrations were 5 mg L(-1) or 10 mg L(-1). Nutrient addition significantly favoured Cr removal and enhanced Cr translocation to leaves. In Cr treatments a high detritus formation from loss of root biomass was observed probably due to its toxicity. Cr was mainly accumulated in the detrital fraction, whereas P and N were retained fundamentally in leaves. A toxic effect was observed in the Cr + P10 and Cr + N10 treatments. These results could be applied to enhance Cr removal efficiency of constructed wetlands using P. stratiotes, where nutrient enrichment could be attained by treating sewage together with the industrial effluents.
研究了单独或联合添加不同浓度的 P 和 N 对凤眼蓝 Cr(III)积累能力的影响。将添加污染物的植物和池塘水放入塑料水族箱中。Cr 的浓度为 5mg/L，而 P 和 N 的浓度分别为 5mg/L 或 10mg/L。养分添加显著有利于 Cr 的去除，并增强了 Cr 向叶片的转运。在 Cr 处理中，由于根生物量损失导致大量碎屑形成，这可能是由于其毒性所致。Cr 主要积累在碎屑部分，而 P 和 N 则主要保留在叶片中。在 Cr + P10 和 Cr + N10 处理中观察到了毒性效应。这些结果可应用于通过使用凤眼蓝增强人工湿地的 Cr 去除效率，其中通过处理污水和工业废水可实现养分富集。
