Extraction of chromium-DCTA complex with trioctylmonomethylammonium chloride (Aliquat-336)

The violet complex formed between chromium(III) DCTA can be quantitatively extracted by Aliquat-336 in chloroform as [Cr(DCTA)] [Aliquat-336]. The conditions for quantitative extraction have been established. The method facilitates the determination of chromium in the presence of other coloured cations.     

Production of 99Mo and 64Cu in a mixed field of photons and neutrons in a clinical electron linear accelerator

Journal of Radioanalytical and Nuclear Chemistry - The medical isotopes 99Mo and 64Cu were produced via the dual routes of 100Mo(γ,n)99Mo + 98Mo(n,γ)99Mo and 65Cu(γ,n)...     

Spectrophotometric studies of complexing equilibria of hafnium with some azo-dyes in aqueous solution

Hafnium forms three chelates 1:2 (M:L) (pH 1.0, 520 nm), 1:1 (pH 1.4, 520 nm), and 2:1 (pH 2.0, 520 nm) with PAR; and 1:2 chelate with EBB (pH 0.8, 590 nm), SVRS (pH 1.2, 560 nm), and CLM (0.25 M, 590 nm), respectively. In all the systems, only for 1:2 chelates, the exact nature of the equilibrium involved in chelation has been evaluated. The kinetic study and the number of protons liberated during chelation reaction have been studied. From the values of the equilibrium constant, the values of absolute stability constants for these complexes have also been evaluated.