Summary
2′:4′-Dihydroxy chalcone is a highly sensitive reagent for ferric iron (1:1,50,000) in weakly acid medium. The absorption maximum is at 440 mµ for the complex in the range of pH 2·8–3·2. The best results were obtained at pH 3·0. The relation between concentration of ferric iron and the intensity of absorption is not strictly linear in the range of 2–12γ/ml. The complex is quite stable for about 20 hours at pH 3·0. The ratio of the metal to ligand is 1:3. The tolerance limits of the colour reaction for Al, Be, Ceric, Cr, Th, U, V, and Zr are reported. Ce+4, VO −13 , and Zr+4 interfere even at 10γ/25 ml.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Lenseet al...Virginia J. of Science., 1942,3, 14;C.A., 1942,36, 3113.
Tokuichi Tsumakiet al...J. of Chem Soc. Japan Pure Chem. Sec., 1951,72, 368;C.A., 1952,46, 8103.
Gy Almassyet al...Acta Chim. Acad. Sci. Hungary, 1958,14, 241 (In English);C.A., 1958,52, 15324.
Saiyad, I. Z.,et al. ..J. Chem. Soc., 1937, 1737.
Job, P...Ann. Chim., 1928,9, 113;C.A., 1928,22, 2120.
Harvey, A. E. and Manning, D. L.J. Am. Chem. Soc., 1950,72, 4488.
Edmonds, S. M. and Nathan Birnbaum Ibid., 1941,63, 1471.
Author information
Authors and Affiliations
Additional information
Communicated by Dr. K. Neelakantam,f.a.sc.
Rights and permissions
About this article
Cite this article
Syamasundar, K. Chalcones as inorganic analytical reagents. Proc. Indian Acad. Sci. 59, 241–250 (1964). https://doi.org/10.1007/BF03046438
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF03046438