caa a22 4500 465730132 CHVBK 20180323111739.0 cr unu---uuuuu 170327e19900101xx s 000 0 eng 10.1007/BF02049353 doi (NATIONALLICENCE)springer-10.1007/BF02049353 Nickel-63: Radiochemical separation and measurement with an ion implanted silicon detector [Elektronische Daten] [E. Holm, B. Oregioni, D. Vas, H. Pettersson, J. Rioseco, U. Nilsson] A method has been developed for the determination of63Ni in environmental samples. The samples are ashed and leached with aqua regia whereafter hydroxides are precipitated with ammonia, leaving Ni in the aqueous phase. Nickel is extracted as dimethyl glyoxime complex by chloroform and back-extracted with HCl. Finially, Ni is electroplated onto a copper disc from an ammonium sulphate medium at high pH. The radiochemical yield is determined by atomic absorption measurements of stable Ni before and after electrodeposition. Nickel-63 on the discs is measured by beta spectrometry using solid state ion implanted detectors and by using a conventional windowless anti-coincidence shielded GM gas flow counter. Using a counting time of 3000 minutes, the minimum detection limits were 8 and 1 mBq, respectively. The method was applied to a series of macroalgae (Fucus vesiculosus) collected at different distances from a nuclear power plant. There was a correlation between distance to the power plant and the63Ni concentration in the algae. The relationship between63Ni and60Co, as well as that between63Ni and stable nickel, was also investigated. Akadémiai Kiadó, 1990 Holm E. Department of Radiation Physics, Lund University, Lund, Sweden aut Oregioni B. International Laboratory of Marine Radioactivity, IAEA, Monaco aut Vas D. International Laboratory of Marine Radioactivity, IAEA, Monaco aut Pettersson H. International Laboratory of Marine Radioactivity, IAEA, Monaco aut Rioseco J. Department of Radiation Physics, Lund University, Lund, Sweden aut Nilsson U. Department of Radiation Physics, Lund University, Lund, Sweden aut Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 138/1(1990-01-01), 111-118 0236-5731 138:1<111 1990 138 10967 https://doi.org/10.1007/BF02049353 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02049353 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Holm E. Department of Radiation Physics, Lund University, Lund, Sweden aut NATIONALLICENCE 700 1- Oregioni B. International Laboratory of Marine Radioactivity, IAEA, Monaco aut NATIONALLICENCE 700 1- Vas D. International Laboratory of Marine Radioactivity, IAEA, Monaco aut NATIONALLICENCE 700 1- Pettersson H. International Laboratory of Marine Radioactivity, IAEA, Monaco aut NATIONALLICENCE 700 1- Rioseco J. Department of Radiation Physics, Lund University, Lund, Sweden aut NATIONALLICENCE 700 1- Nilsson U. Department of Radiation Physics, Lund University, Lund, Sweden aut NATIONALLICENCE 773 0- Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 138/1(1990-01-01), 111-118 0236-5731 138:1<111 1990 138 10967 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer