Abstract
The present work deals with the determination of Cr/III/ by means of the substoichiometric isotope dilution method, using PAN, 1-/2-pyridylazo/-2-naphthol as a complexing agent. Chromium forms a 1∶2 complex with PAN. Heating to 90°C for 3 min was necessary for complete complexation. The complex was extracted into chloroform at pH 3.5 /acetate buffer/. Tens of micrograms of chromium could be determined. Effect of diverse metal ions was also studied.
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Rao, K.A., Rangamannar, B. Substoichiometric determination of chromium. Journal of Radioanalytical and Nuclear Chemistry Letters 86, 365–371 (1984). https://doi.org/10.1007/BF02167213
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DOI: https://doi.org/10.1007/BF02167213