[en]The known methods of the 241Am contents determination in environmental objects, as a rule, is based on ion-chromatographic or extraction separation techniques. This approach reflects widespread opinion, that only the α-spectrometric analysis termination is suitable to ensure necessary sensitivity of the overall method of 241Am actively determination. Really, the minimal detectable activity for such methods is about 0.05 Bq/kg (considering that Am is usually concentrated during separation procedure). However, because of α-spectrometry does not permit to separate the α-peaks of the 241Am, and 238Pu, but also in view of high requests to the α-spectrometric specimen purity, the multistage and laborious chemical procedures to separate 241Am from plutonium radionuclides and other elements (with a thorough control of each separation stage) are needed
Primary SubjectSPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS (C5221)
Secondary SubjectGEOSCIENCES (B3140)
SourceEuropean Commission (CEC), Brussels (Belgium); International Atomic Energy Agency, Vienna (Austria); World Health Organization, Geneva (Switzerland); 699 p; ISSN 1011-4289; ; Sep 1997; p. 314-319; International conference on one decade after Chernobyl: Summing up the consequences of the accident; Vienna (Austria); 8-12 Apr 1996; 5 refs, 1 fig., 3 tabs.
Country/OrganizationInternational Atomic Energy Agency (IAEA)
Descriptors (DEI)AMERICIUM 241, BUILDUP, CHERNOBYLSK-4 REACTOR, ENVIRONMENTAL IMPACTS, EXTERNAL ZONES, GAMMA SPECTROMETERS, GAMMA SPECTROSCOPY, RADIATION DOSES, RADIATION MONITORING, RADIOECOLOGICAL CONCENTRATION, REACTOR ACCIDENTS, SOILS
Descriptors (DEC)ACCIDENTS, ACTINIDE NUCLEI, ALPHA DECAY RADIOISOTOPES, AMERICIUM ISOTOPES, ECOLOGICAL CONCENTRATION, ENRICHED URANIUM REACTORS, GRAPHITE MODERATED REACTORS, HEAVY NUCLEI, ISOTOPES, LWGR TYPE REACTORS, MEASURING INSTRUMENTS, MONITORING, NUCLEI, ODD-EVEN NUCLEI, POWER REACTORS, RADIOISOTOPES, REACTORS, SPECTROMETERS, SPECTROSCOPY, SPONTANEOUS FISSION RADIOISOTOPES, THERMAL REACTORS, WATER COOLED REACTORS, YEARS LIVING RADIOISOTOPES