Effects of Cd2+ and Pb2+ on the substrate biofilms in the integrated vertical-flow constructed wetland
文献类型：期刊论文
| 作者 | Zhang Jinlian ; Cheng Shuiping ; He Feng ; Liang Wei ; Wu Zhenbin |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
 |
| 出版日期 | 2008 |
| 卷号 | 20期号:8页码:900-906 |
| 关键词 | Cd2+ Pb2+ biofilms dehydrogenase activity polysaccharide content integrated vertical-flow constructed wetland (IVCW) |
| 通讯作者 | Wu, ZB, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China |
| 中文摘要 | The effects of single Cd2+ and Pb2+, and combined Cd2+ and Pb2+ on dehydrogenase activity and polysaccharide content of the substrate biofilms in the integrated vertical-flow constructed wetland (IVCW) were studied. Dehydrogenase activities decreased linearly with the increasing concentrations of Cd2+ and Pb2+ at different times (6, 24, 72, and 120 h). The activities at both 6 and 24 h were significantly higher than that at 72 and 120 h in the case of single and combined treatments. The single Cd2+ and Pb2+ treatments significantly inhibited dehydrogenase activities at concentrations in excess of 20 mu mol/L Cd2+ and 80 mu mol/L Pb2+, respectively. The inhibitory effect of Cd2+ was much greater than that of Pb2+. At the same time, the combined treatment of Cd2+ and Pb2+ Significantly inhibited dehydrogenase activities at all five concentrations studied and the lowest combined concentration was 1.25 mu mol/L Cd2+ and 5 mu mol/L Pb2+. A synergistic effect of Cd2+ and Pb2+ was observed. On the other hand, polysaccharide contents varied unpredictably with the increasing concentrations of Cd2+ and Pb2+ and extended experimental time. There were no significant statistical differences within the range of concentration and time studied, whether singly or in combination. These results implied that the effects of heavy metals on biofilms should be a concern for the operation and maintenance of constructed wetlands. |
| 学科主题 | Environmental Sciences |
| 收录类别 | SCI |
| 资助信息 | Chinese Academy of Sciences [KSCX2-SW-102]; M-Tech Research and Development Program (863) of China [2002AA601021]; National Natural Science Foundation of China [20177017]; Key Project of Natural Science Fund of China [30623001] |
| 语种 | 英语 |
| 公开日期 | 2010-10-13 |
| 源URL | [http://ir.ihb.ac.cn/handle/152342/8042]  |
| 专题 | 水生生物研究所_中科院水生所知识产出（2009年前）_期刊论文 |
| 推荐引用方式 GB/T 7714 | Zhang Jinlian,Cheng Shuiping,He Feng,et al. Effects of Cd2+ and Pb2+ on the substrate biofilms in the integrated vertical-flow constructed wetland[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2008,20(8):900-906. |
| APA | Zhang Jinlian,Cheng Shuiping,He Feng,Liang Wei,&Wu Zhenbin.(2008).Effects of Cd2+ and Pb2+ on the substrate biofilms in the integrated vertical-flow constructed wetland.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,20(8),900-906. |
| MLA | Zhang Jinlian,et al."Effects of Cd2+ and Pb2+ on the substrate biofilms in the integrated vertical-flow constructed wetland".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 20.8(2008):900-906. |
入库方式： OAI收割
来源：水生生物研究所
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