Abstract
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.
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YAO Jun
Funded by the Scientific and Technological Project of Tackle Key Problem in Science and Technology Branch of Hunan Province (No. 00GKY2020; 01GKY2027) and the Key Project of Hunan Provincial Educational Branch (02A040)
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Jun, Y., Jankowski, K., Yong, T. et al. On-line preconcentration of trace nickel from electrolytic manganese using minicolumn packed activated carbon for electrothermal atomic absorption spectrometry. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 19, 17–20 (2004). https://doi.org/10.1007/BF02841358
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DOI: https://doi.org/10.1007/BF02841358