【摘要】 本文以沉水植物伊乐藻为试验材料,通过模拟实验研究了伊乐藻对多环芳烃类化合物(菲)的去除作用并探讨了菲的长期暴露对水体水质、伊乐藻的丙二醛、可溶性和可溶性蛋白质含量等生理生化指标的影响.水体中菲的浓度影响水体的水质,在1mg/L菲暴露下低等藻类的生长情况受到严重抑制.两种浓度下因伊乐藻引起的对水中菲的去除率达到68.8%和71.7%.在两种浓度暴露下,伊乐藻体内的丙二醛和可溶性糖含量先降低,可溶性蛋白质含量先升高.但随着暴露时间的延长,都恢复到和初始值比较接近.伊乐藻对较低浓度的菲有很好的抗逆性,可以考虑作为水体菲污染修复的先锋物种.更多还原

【Abstract】 Removal efficiencies and physiological responses of submerged macrophytes(Elodeacanadensi,ED for short)to phenanthrene(Phe)were investigated,following 40-day exposure to Phe solutions in an indoor-simulated experiment.Phenanthrene can affect water quality apparently.Under the stress of high concentration Phenanthrene,growth of lower algae was inhibited seriously.The efficiencies of plant-enhanced remediation for water Phe contaminants approached to 68.8 and 71.7 percent for 1-ED and 0.5-ED treatments,respectively.Results showed that these SMs have stress-resistance to Phe,although adding Phe to water resulted in adverse effects on these plants such as reduced malondialdehyde(MDA)and water soluble carbohydrate(WSC)contents as well increased water soluble protein(WSP)contents because of several days’ Phe exposure.ED can be selected as pioneering plants with high remediation e?ciency based on plant accumulation of Pre.更多还原