Comparison of detection limits of selected elements in reference materials by INAA and conventional or anticoincidence gamma-ray spectrometry
Anticoincidence gamma-ray spectrometry is being routinely used in conjunction with instrumental neutron activation analysis (INAA) for practical, analytical determinations. In our laboratory, we have initiated a systematic study on the advantages of anticoincidence gamma-ray spectrometry in INAA involving a large number of nuclides in a wide variety of matrices. The present work consists of the selection of timing parameters (i.e., irradiation, decay, and counting times) for the INAA of certain elements of primary interest (arsenic, chromium, iodine, antimony, and selenium) in a variety of biological, geologic, and environmental reference materials. The analytical schemes were developed individually for each element in each matrix using conventional gamma-ray spectrometry. In some cases both thermal and epithermal irradiations were studied. These schemes were then used to determine those five elements and certain other elements of secondary interest (aluminum, cobalt, iron, lanthanum, magnesium, manganese, scandium, and zinc) using both conventional and anticoincidence gamma-ray spectrometry. The elemental contents of the reference materials were compared to published values. Detection limits for the elements of interest were calculated for each of the two detection systems.
- OSTI ID:
- 88962
- Report Number(s):
- CONF-941102-; ISSN 0003-018X; TRN: 95:004215-0026
- Journal Information:
- Transactions of the American Nuclear Society, Vol. 71; Conference: Winter meeting of the American Nuclear Society (ANS), Washington, DC (United States), 13-18 Nov 1994; Other Information: PBD: 1994
- Country of Publication:
- United States
- Language:
- English
Similar Records
Quality assurance program for the determination of selenium in foods and diets by instrumental neutron activation
Multielement analysis of foods and related materials by NAA