caa a22 4500 469113456 CHVBK 20180323133117.0 cr unu---uuuuu 170328e19920701xx s 000 0 eng 10.1007/BF02037129 doi (NATIONALLICENCE)springer-10.1007/BF02037129 Determination of U and Th in tungsten by radiochemical neutron activation analysis [Elektronische Daten] [Nak Kim, Keung-Shik Park, Hyung Woo, Kil Lee, Yoon Yoon, Duk Kim] A radiochemical separation method using an anion exchange resin has been applied to 4N grade tungsten for determining U, Th and 4 other elements. While tungsten remained in the resin, Na, K and As were separated with 0.05M HCl and 1M HF and then U, Th and Cr were eluted with 1M HCl and 1M HF. The separation yield of neptunium (U) was influenced largely by the amount of thorium, but this influence could be neglected as the concentration of the thorium was below 0.5μg/ml. The content of these elements were calculated by a single comparator method using monitors, gold and cobalt. The detection limits of U and Th are 4.0 and 1.2 ppb, respectively. Akadémiai Kiadó, 1992 Kim Nak Korea Institute of Energy and Resources, 71-2, Jang-dong, Yoosung-gu, Daejeon, (Korea) aut Park Keung-Shik Korea Institute of Energy and Resources, 71-2, Jang-dong, Yoosung-gu, Daejeon, (Korea) aut Woo Hyung Korea Institute of Energy and Resources, 71-2, Jang-dong, Yoosung-gu, Daejeon, (Korea) aut Lee Kil Korea Institute of Energy and Resources, 71-2, Jang-dong, Yoosung-gu, Daejeon, (Korea) aut Yoon Yoon Korea Institute of Energy and Resources, 71-2, Jang-dong, Yoosung-gu, Daejeon, (Korea) aut Kim Duk Korea Institute of Energy and Resources, 71-2, Jang-dong, Yoosung-gu, Daejeon, (Korea) aut Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 160/2(1992-07-01), 539-548 0236-5731 160:2<539 1992 160 10967 https://doi.org/10.1007/BF02037129 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02037129 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kim Nak Korea Institute of Energy and Resources, 71-2, Jang-dong, Yoosung-gu, Daejeon, (Korea) aut NATIONALLICENCE 700 1- Park Keung-Shik Korea Institute of Energy and Resources, 71-2, Jang-dong, Yoosung-gu, Daejeon, (Korea) aut NATIONALLICENCE 700 1- Woo Hyung Korea Institute of Energy and Resources, 71-2, Jang-dong, Yoosung-gu, Daejeon, (Korea) aut NATIONALLICENCE 700 1- Lee Kil Korea Institute of Energy and Resources, 71-2, Jang-dong, Yoosung-gu, Daejeon, (Korea) aut NATIONALLICENCE 700 1- Yoon Yoon Korea Institute of Energy and Resources, 71-2, Jang-dong, Yoosung-gu, Daejeon, (Korea) aut NATIONALLICENCE 700 1- Kim Duk Korea Institute of Energy and Resources, 71-2, Jang-dong, Yoosung-gu, Daejeon, (Korea) aut NATIONALLICENCE 773 0- Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 160/2(1992-07-01), 539-548 0236-5731 160:2<539 1992 160 10967 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer