Abstract.
This work describes a new analytical procedure for trace vanadium by graphite furnace atomic absorption spectroscopy coupled to cloud point extraction (CPE) as the separation-preconcentration method. The CPE behavior of vanadium using methylene blue as complex agent and Triton X-100 as a surfactant was investigated systematically. Under the optimized conditions, the detection limit was 0.7 ng · mL−1, and the relative standard deviation was 4.3% for vanadium (c = 50.0 ng · mL−1, n = 5). The recovery of vanadium was in the range of 98.9–102.8%. The method was applied to the analysis of vanadium in certified reference materials and real samples. The results obtained were in good agreement with the certified values.
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Correspondence: Xiashi Zhu, Key Laboratory of Environmental Material and Environmental Engineering of Jiangsu province/College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, P.R. China
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Zhu, X., Zhu, Z. & Wu, S. Determination of trace vanadium in soil by cloud point extraction and graphite furnace atomic absorption spectroscopy. Microchim Acta 161, 143–148 (2008). https://doi.org/10.1007/s00604-007-0762-7
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DOI: https://doi.org/10.1007/s00604-007-0762-7