caa a22 4500 469111291 CHVBK 20180323133111.0 cr unu---uuuuu 170328e19920401xx s 000 0 eng 10.1007/BF02034784 doi (NATIONALLICENCE)springer-10.1007/BF02034784 Kinetics of isotope exchange between [3-(iodophenyl)methyl]guanidine (mIBG) and [131I]-iodide [Elektronische Daten] [M. Tešić, M. Ratković, V. Dondur, R. Jankov] The reaction of isotope exchange between [3-(iodophenyl)methyl]guanidine, mIBG, and [131]-iodide in relatively concentrated solutions, in the presence of different ammonium salts, in a closed system, over the temperature range from 130 to 150°C, has been investigated. The reaction occurs either with (NH4)2SO4 or CH3COOH, which indicates that the reaction goes through some intermediate stages. Kinetic studies show the influence of the additives. The activation energies for the reaction with (NH4)2SO4/H2O, (NH4)2SO4/CH3COOH and CH3COOH are 121.1, 115.1 and 84.5 kJ·mol−1, respectively. Akadémiai Kiadó, 1992 Tešić M. Institute for Radioisotopes, "Boris Kidrič” Institute of Nuclear Sciences, Vinča, Belgrade, (Yugoslavia) aut Ratković M. Institute for Radioisotopes, "Boris Kidrič” Institute of Nuclear Sciences, Vinča, Belgrade, (Yugoslavia) aut Dondur V. Faculty of Sciences, University of Belgrade, Belgrade, (Yugoslavia) aut Jankov R. Faculty of Sciences, University of Belgrade, Belgrade, (Yugoslavia) aut Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 158/1(1992-04-01), 183-191 0236-5731 158:1<183 1992 158 10967 https://doi.org/10.1007/BF02034784 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02034784 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tešić M. Institute for Radioisotopes, "Boris Kidrič” Institute of Nuclear Sciences, Vinča, Belgrade, (Yugoslavia) aut NATIONALLICENCE 700 1- Ratković M. Institute for Radioisotopes, "Boris Kidrič” Institute of Nuclear Sciences, Vinča, Belgrade, (Yugoslavia) aut NATIONALLICENCE 700 1- Dondur V. Faculty of Sciences, University of Belgrade, Belgrade, (Yugoslavia) aut NATIONALLICENCE 700 1- Jankov R. Faculty of Sciences, University of Belgrade, Belgrade, (Yugoslavia) aut NATIONALLICENCE 773 0- Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 158/1(1992-04-01), 183-191 0236-5731 158:1<183 1992 158 10967 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer