caa a22 4500 465730345 CHVBK 20180323111739.0 cr unu---uuuuu 170327e19900201xx s 000 0 eng 10.1007/BF02039857 doi (NATIONALLICENCE)springer-10.1007/BF02039857 Analytical techniques for determining radionuclides associated with colloids in waters [Elektronische Daten] [Brit Salbu, Helge Bjørnstaad] Colloids play a major role in the transport of trace metals as well as radionuclides in natural waters. These species are of importance for passive take in biota. Radionuclides may form colloids and pseudocolloids during hydrolysis or through interaction with other components present in the water phase, such as clay minerals or humic substances. Furthermore, aggregation and dispersion and other transformation processes, will influence the colloidal fraction, for instance during storage of samples. Fractionation of radionuclides associated with colloids in natural waters should, therefore, take place "in situ” or shortly after sampling. Different analytical techniques are useful for the fractionation of colloids, pseudocolloids, and particles. In the present paper, the application of hollow fiber ultrafiltration and dialysis is demonstrated for radionuclides in waste waters from the Oscarshamn nuclear installation in Sweden. The results illustrate that hollow fiber ultrafiltration is a more powerful technique than dialysis. The fractionation is rapid, sorption is of minor significance, the pore size distribution is rather narrow, and the filtering capacity is high. Akadémiai Kiadó, 1990 Salbu Brit Isotope and Electron Microscopy Laboratories, Agricultural University of Norway, N-1432, Aas-NLH, Norway aut Bjørnstaad Helge Isotope and Electron Microscopy Laboratories, Agricultural University of Norway, N-1432, Aas-NLH, Norway aut Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 138/2(1990-02-01), 337-346 0236-5731 138:2<337 1990 138 10967 https://doi.org/10.1007/BF02039857 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02039857 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Salbu Brit Isotope and Electron Microscopy Laboratories, Agricultural University of Norway, N-1432, Aas-NLH, Norway aut NATIONALLICENCE 700 1- Bjørnstaad Helge Isotope and Electron Microscopy Laboratories, Agricultural University of Norway, N-1432, Aas-NLH, Norway aut NATIONALLICENCE 773 0- Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 138/2(1990-02-01), 337-346 0236-5731 138:2<337 1990 138 10967 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer