caa a22 4500 465731686 CHVBK 20180323111743.0 cr unu---uuuuu 170327e19900301xx s 000 0 eng 10.1007/BF02060453 doi (NATIONALLICENCE)springer-10.1007/BF02060453 Determination of thorium and uranium in hot spring and crater lake waters by neutron activation analysis [Elektronische Daten] [T. Honda, T. Oi, T. Ossaka, T. Nozaki, H. Kakihana] Determination of Th and U in acidic hot spring and crater lake waters was investigated by neutron activation analysis (NAA). Before neutron irradiation, Th and U were preconcentrated and separated from interfering nuclides such as alkali metals and halogens by coprecipitation with aluminium. Irradiation was carried out in two ways, viz., irradiation with Cd foil wrapping (epithermal NAA) and irradiation without Cd foil wrapping (normal NAA). The final determined values of Th and U were at ppb levels. Higher reliability of the determined values was obtained for Th than for U. It was found that epithermal NAA was more effective for the determination of these two actinides than normal NAA and was more effective for the determination of U than that of Th. Akadémiai Kiadó, 1990 Honda T. Atomic Energy Research Laboratory, Musashi Institute of Technology, 971 Ozenji, Asaoku, 215, Kawasakishi, Kanagawa, (Japan) aut Oi T. Department of Chemistry, Sophia University, 7-1 Kioicho, Chiyodaku, 102, Tokyo, (Japan) aut Ossaka T. Department of Chemistry, Sophia University, 7-1 Kioicho, Chiyodaku, 102, Tokyo, (Japan) aut Nozaki T. Atomic Energy Research Laboratory, Musashi Institute of Technology, 971 Ozenji, Asaoku, 215, Kawasakishi, Kanagawa, (Japan) aut Kakihana H. Department of Chemistry, Sophia University, 7-1 Kioicho, Chiyodaku, 102, Tokyo, (Japan) aut Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 139/1(1990-03-01), 65-77 0236-5731 139:1<65 1990 139 10967 https://doi.org/10.1007/BF02060453 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02060453 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Honda T. Atomic Energy Research Laboratory, Musashi Institute of Technology, 971 Ozenji, Asaoku, 215, Kawasakishi, Kanagawa, (Japan) aut NATIONALLICENCE 700 1- Oi T. Department of Chemistry, Sophia University, 7-1 Kioicho, Chiyodaku, 102, Tokyo, (Japan) aut NATIONALLICENCE 700 1- Ossaka T. Department of Chemistry, Sophia University, 7-1 Kioicho, Chiyodaku, 102, Tokyo, (Japan) aut NATIONALLICENCE 700 1- Nozaki T. Atomic Energy Research Laboratory, Musashi Institute of Technology, 971 Ozenji, Asaoku, 215, Kawasakishi, Kanagawa, (Japan) aut NATIONALLICENCE 700 1- Kakihana H. Department of Chemistry, Sophia University, 7-1 Kioicho, Chiyodaku, 102, Tokyo, (Japan) aut NATIONALLICENCE 773 0- Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 139/1(1990-03-01), 65-77 0236-5731 139:1<65 1990 139 10967 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer