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- Title
INAA with anticoincidence counting significantly reduces interferences from the 554.3-keV photopeak of <sup>82</sup>Br to allow reliable measurements of nanogram levels of arsenic in solid biological materials via the 559.1-keV photopeak of <sup>76</sup>As
- Authors
Zhang, Weihua; Chatt, A.
- Abstract
It is rather difficult to measure low levels of arsenic by instrumental neutron activation analysis (INAA) in biological materials containing high levels of bromine and antimony in particular, as well as sodium and potassium. The 559.1-keV photopeak of 76As is interfered with by the 554.3- and 564.1-keV photopeaks of 82Br and 122Sb, respectively. The use of INAA in conjunction with anticoincidence spectrometry (INAA-AC) was found to reduce the background under the 559.1-keV photopeak by factors of 4-16 for the biological reference materials analyzed and to decrease the detection limit to 0.35 µg kg−1 making the measurement of nanogram amounts arsenic in them possible.
- Subjects
PHOTOPEAK; ANTICOINCIDENCE counting; NUCLEAR activation analysis; BIOMEDICAL materials; ARSENIC analysis
- Publication
Journal of Radioanalytical & Nuclear Chemistry, 2018, Vol 318, Issue 3, p1671
- ISSN
0236-5731
- Publication type
Article
- DOI
10.1007/s10967-018-6280-8