On-line preconcentration of trace nickel from electrolytic manganese using minicolumn packed activated carbon for electrothermal atomic absorption spectrometry
| Autor: | Tuo Yong, Yao Jun, Krzysztof Jankowski, Xiao Song-hua, Xiao Yi, Tan Zhu-zhong, Yao Zu-feng |
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| Rok vydání: | 2004 |
| Předmět: |
inorganic chemicals
Detection limit Chromatography Materials science Calibration curve Analytical chemistry chemistry.chemical_element Sorption Manganese law.invention chemistry.chemical_compound Nickel chemistry Nitric acid law General Materials Science Atomic absorption spectroscopy Enrichment factor |
| Zdroj: | Journal of Wuhan University of Technology-Mater. Sci. Ed.. 19:17-20 |
| ISSN: | 1993-0437 1000-2413 |
| DOI: | 10.1007/bf02841358 |
| Popis: | The online flow injection preconcentration and electrothermal atomic absorption spectrometry method were used for the determination of trace nickel in electrolytic manganese samples by sorption on a conical minicolumn packed with activated carbon at pH 9.0. The nickel was eluted from the minicolumn with 10% (v/v) nitric acid. An enrichment factor of 190-fold for a sample volume of 10mL was obtained. The detection limit (DL) of nickel with the use of the preconcentration method was 13ng·g−1 in the original solid sample. The precision for 10 replicate determinations at 150ng·g−1 nickel concentration was 5.2% relative standard deviation (RSD). The calibration graph was linear with a correlation coefficient of r=0.9996 up to concentration of 660ng·g−1 nickel. |
| Databáze: | OpenAIRE |
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