Indirect determination of vanadium by atomic absorption spectrometry |
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Authors: | Debasis Chakraborty Arabinda K Das |
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Institution: | Department of Chemistry, University of Burdwan, Burdwan-713104 India |
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Abstract: | An indirect method for the determination of vanadium as vanadate by atomic absorption spectrometry is described. In neutral medium, vanadate forms a stable ion-association complex with copper (II) and biguanide, which is extractable into butanol with an efficiency higher than 99%. The copper content in the extract (and hence indirectly VO?3) is determined by aspirating it directly into an acetylene flame. The calibration graph is linear up to 3.4 μg ml?1 of VO?3. The limit of detection is 16 ng ml?1. Only chromium interferes. |
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