| 龙须菜对水体Cu2+、Cd2+的去除效率及其生理响应 |
| Phytoremediation and Physiological Response of Cu2+、Cd2+ Contaminated Water by Gracilaria Lemaneiformis |
| 投稿时间：2008-10-20 |
| DOI： |
| 中文关键词:龙须菜 铜 镉 去除率 生理响应 |
| 英文关键词:Gracilaria lemaneiformis Copper Cadmium Removal rate Physiological response |
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| 中文摘要: |
| 通过室内实验，研究了龙须菜对水体Cu^2＋、Cd^2＋的去除效率及其部分生理生化指标的变化状况。结果显示，龙须菜对水体低浓度（0．05mg／L）Cu^2＋、Cd^2＋的去除率分别达到了99．9％和93．1％；对较高浓度（0．5mg／L）Cu^2＋、Cd^2＋的去除率分别为55．24％和86．15％；水体较高浓度（0．5mg／L）Cu^2＋会导致龙须菜叶绿素a、b和藻红素的含量均显著下降（P〈0．05），而高浓度（2．5mg／L）Cd^2＋不会导致色素含量的显著下降；龙须菜对环境中Cu^2＋的生理响应浓度也明显小于Cd^2＋，藻体SOD活性出现峰值且MDA含量显著高于（P〈0．05）对照组的浓度水平分别为Cu^2＋0．05mg／L及Cd^2＋0．5mg／L。龙须菜更适宜作为对海水Cd^2＋污染进行生物修复的植物。 |
| 英文摘要: |
| Experiments of phytoremediation and physiologic index variability of Gracilaria lemaneiformis under the persecution of different Cu^2＋ and Cd^2＋ contaminated water were conducted. The results showed that, the respective efficiencies of removal were 99.9% and 93.1% when treated G. lemaneiforrnis with 0.05 mg/L Cu^2＋ and Cd^2＋ , the respective efficiencies of removal were 55.24% and 86.15% when treated with 0.5 mg/L Cu^2＋ and Cd^2＋ ; the high concentration Cu2. （0.5 mg/L） led a significant decrease of PE and chlorophyll a and chl. b in G. lemaneiformis, while the high concentration Cd^2＋ （2.5 mg/L） didn＇t led an insignificant decrease; the concentration of physiological response of Cu^2＋ was lower than Cd^2＋, the metal concerntrtion levels that of SOD activity had a peak and the content of MDA had a significant increase was at 0.05 rag/L（ Cu^2＋ ） and 0.5 mg/L （ Cd^2＋ ） respectively. G. lemaneiformis is more suitable as a bioremediation plant to Cd^2＋ contaminated water. |
| 吴小松,黄鹤忠,丁飞飞,陈金凤.2009.龙须菜对水体Cu2+、Cd2+的去除效率及其生理响应[J].水生态学杂志,30(5):41-45. |
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