caa a22 4500 469111526 CHVBK 20180323133112.0 cr unu---uuuuu 170328e19920401xx s 000 0 eng 10.1007/BF02047114 doi (NATIONALLICENCE)springer-10.1007/BF02047114 Ion exchange of some transition metal cations on hydrated titanium dioxide in aqueous ammonia solutions [Elektronische Daten] [A. Bilewicz, R. Dybczynski, J. Narbutt] The adsorption of transition metal cations on hydrated titanium dioxide in complexing ammonia and amine solutions has been studied as a function of ammonia (amine) concentration. The relationships between the distribution coefficients and ammonia concentration as well as the effects of various amines on sorption of transition metals indicate that a coordinate bond is formed between the metal ions and the hydroxy groups of the sorbent. The distribution coefficients of silver(I) and cobalt(III), which form strong ammonia complexes in aqueous solutions, decrease with increasing concentration of ammonia already at concentrations exceeding 10−3. mol·dm−3. Cations of zinc, manganese and mercury which form much weakerammonia complexes do not exhibit any effect of ammonia concentration in the whole range investigated. In the case of sorption of macroamounts of ammonia or amine complexes of silver, the molecular sieve effect plays an important role. The differences in the affinity of hydrated titanium dioxide for ammonia solvates of various transition metal ions can serve as a tool for effective separation of these ions in ammonia solutions. Akadémiai Kiadó, 1992 Bilewicz A. Department of Radiochemistry, Institute of Nuclear Chemistry and Technology, Warsaw, (Poland) aut Dybczynski R. Department of Analytical Chemistry, Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195, Warsaw, (Poland) aut Narbutt J. Department of Radiochemistry, Institute of Nuclear Chemistry and Technology, Warsaw, (Poland) aut Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 158/2(1992-04-01), 273-282 0236-5731 158:2<273 1992 158 10967 https://doi.org/10.1007/BF02047114 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02047114 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bilewicz A. Department of Radiochemistry, Institute of Nuclear Chemistry and Technology, Warsaw, (Poland) aut NATIONALLICENCE 700 1- Dybczynski R. Department of Analytical Chemistry, Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195, Warsaw, (Poland) aut NATIONALLICENCE 700 1- Narbutt J. Department of Radiochemistry, Institute of Nuclear Chemistry and Technology, Warsaw, (Poland) aut NATIONALLICENCE 773 0- Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 158/2(1992-04-01), 273-282 0236-5731 158:2<273 1992 158 10967 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer