Accumulation, assimilation and growth inhibition of copper on freshwater alga (Scenedesmus subspicatus 86.81 SAG) in the presence of EDTA and fulvic acid
文献类型：期刊论文
| 作者 | Ma, M; Zhu, WZ; Wang, ZJ; Witkamp, GJ |
| 刊名 | AQUATIC TOXICOLOGY
 |
| 出版日期 | 2003 |
| 卷号 | 63期号:3页码:221-228 |
| 关键词 | copper toxicity alga FIAM BLM |
| 英文摘要 | Accumulation and growth inhibition of Cu to fresh water alga (Scenedesmus subspicatus 86.81 SAG) and the influences of ethylenediaminetetraacetic acid (EDTA) and fulvic acid (FA) were examined. These results demonstrated that both EDTA and FA could reduce toxicity of Cu to alga by the way of preventing Cu from being adsorbed by cell wall of alga. When dissolved Cu (Cu(dissolved)), extracellular Cu (Cu(extracellular)), and intracellular CU (Cu(intracellular)) were differentiated, our results showed that the concentration level of extracellular CU ([Cu(extracelular)]) was a good indicator for measuring the toxic effects of Cu on alga growth in complex matrix. Either in the absence or in the presence of EDTA-and FA, the concentration of intracellular Cu increased to 0.6-1.5 x 10(-8) muM per cell when the growth inhibition reached to about 50%. We found that the acute toxicity of copper on unicellular alga could be interpreted by its accumulation at a discrete site or biotic ligand at alga cell wall and critical accumulation of Cu associated with EC(50) was determined to be 1 x 10(-8) muM per cell. Therefore, the Biotic Ligand Model (BML) could be extended to predict the influence of copper on growth inhibition of alga. (C) 2002 Elsevier Science B.V. All rights reserved. |
| 研究领域[WOS] | Marine & Freshwater Biology ; Toxicology |
| WOS记录号 | WOS:000182765800002 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/23737]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Ma, M,Zhu, WZ,Wang, ZJ,et al. Accumulation, assimilation and growth inhibition of copper on freshwater alga (Scenedesmus subspicatus 86.81 SAG) in the presence of EDTA and fulvic acid[J]. AQUATIC TOXICOLOGY,2003,63(3):221-228. |
| APA | Ma, M,Zhu, WZ,Wang, ZJ,&Witkamp, GJ.(2003).Accumulation, assimilation and growth inhibition of copper on freshwater alga (Scenedesmus subspicatus 86.81 SAG) in the presence of EDTA and fulvic acid.AQUATIC TOXICOLOGY,63(3),221-228. |
| MLA | Ma, M,et al."Accumulation, assimilation and growth inhibition of copper on freshwater alga (Scenedesmus subspicatus 86.81 SAG) in the presence of EDTA and fulvic acid".AQUATIC TOXICOLOGY 63.3(2003):221-228. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。