Assessment of the concentration of Cr, Mn and Fe in sediment using laser-induced breakdown spectroscopy
| Autor: | R. I. McCrindle, A. du Plessis, M. R. Abshiro, B. S. Chandravanshi, A. A. Ambushe, K. N. Mekonnen |
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| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Bulletin of the Chemical Society of Ethiopia, Vol 27, Iss 1, Pp 1-13 (2013) |
| Druh dokumentu: | article |
| ISSN: | 1011-3924 1726-801X 86635824 |
| Popis: | In the present study, laser-induced breakdown spectroscopy (LIBS) has been applied for the determination of levels of Cr, Mn and Fe in sediment samples and the results have been compared with that of flame-atomic absorption spectroscopy (F-AAS). Fourteen sediment samples were collected from Tinishu Akaki River (TAR), Addis Ababa, Ethiopia. Pellets of 24 mm in diameter and 3-5 mm in thickness were prepared using a manual hydraulic press under a pressure of 8000 psi by mixing finely ground sediment samples with boric acid. The concentrations of Cr, Mn and Fe were successfully determined by Q-switched Nd:YAG laser at 1064 nm. Quantification of these metals was conducted against certified reference materials of sediments and soils. The LIBS results for the elements varied from 0.060–0.707 mg/g for Cr, 0.895–3.64 mg/g for Mn and 26.9–71.8 mg/g for Fe. The F-AAS results varied from 0.061–1.37 mg/g for Cr, 1.24–4.46 mg/g for Mn and 49.0–83.3 mg/g for Fe. TAR was found to be heavily polluted with Cr.DOI: http://dx.doi.org/10.4314/bcse.v27i1.1 |
| Databáze: | Directory of Open Access Journals |
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