Knowledge Management System Of Shanghai Institute of Applied Physics, CAS
| Study of metal bioaccumulation by nuclear microprobe analysis of algae fossils and living algae cells | |
| Guo, P; Wang, J; Li, X; Zhu, J; Reinert, T; Heitmann, J; Spemann, D; Vogt, J; Flagmeyer, RH; Butz, T | |
| 2000 | |
| Conference Name | 14th International Conference on Ion Beam Analysis/6th European Conference on Accelerators in Applied Research and Technology |
| Source Publication | NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS |
| Pages | 801 |
| Conference Date | JUL 26-30, 1999 |
| Conference Place | DRESEDEN, GERMANY |
| Abstract | Microscopic ion-beam analysis of palaeo-algae fossils and living green algae cells have been performed to study the metal bioaccumulation processes. The algae fossils, both single cellular and multicellular, are from the late Neo-proterozonic (570 million years ago) ocean and perfectly preserved within a phosphorite formation. The biosorption of the rare earth element ions Nd3+ by the green algae species euglena gracilis was investigated with a comparison between the normal cells and immobilized ones. The new Leipzig Nanoprobe, LIPSION, was used to produce a proton beam with 2 mu m size and 0.5 nA beam current for this study. PIXE and RES techniques were used for analysis and imaging. The observation of small metal rich spores (< 10 mu m) surrounding both of the fossils and the living cells proved the existence of some specific receptor sites which bind metal carrier ligands at the microbic surface. The bioaccumulation efficiency of neodymium by the algae cells was 10 times higher for immobilized algae cells. It confirms the fact that the algae immobilization is an useful technique to improve its metal bioaccumulation. (C) 2000 Elsevier Science B.V. All rights reserved. |
| ISSN | 0168-583X |
| Indexed By | SCI |
| Funding Project | 应物所课题组 |
| Language | 英语 |
| Document Type | 会议论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/9834 |
| Collection | 中科院上海原子核所2003年前 |
| Recommended Citation GB/T 7714 | Guo, P,Wang, J,Li, X,et al. Study of metal bioaccumulation by nuclear microprobe analysis of algae fossils and living algae cells[C],2000:801. |
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