Abstract
Iodine was determined in foodstuffs consumed in Libya employing two modes of NAA. The first mode was instrumental using short-time irradiation with epithermal neutrons behind a Cd shield (EINAA). The other mode utilized short-time irradiation with the reactor-pile neutrons followed by radiochemical separation (RNAA). The radiochemical separation procedure was based on the alkaline-oxidative fusion of samples and extraction of elemental iodine into chloroform. Separation yield determined using the radiotracer 131I was within the range of 90 to 95%. For quality control purposes, standard reference materials were analyzed in both modes employed. Using RNAA, a detection limit of ∼1 ng g−1 could be obtained indicating superiority of the method in measuring ultra-trace levels of iodine. On the other hand, more than one order of magnitude higher detection limit did not allow sufficiently accurate determination of iodine in Libyan foodstuffs using EINAA.
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Bejey, A.M., Alamin, M.B., Mizera, J. et al. Determination of iodine in foodstuffs consumed in libya using instrumental and radiochemical neutron activation analysis. Czech J Phys 56, D159–D163 (2006). https://doi.org/10.1007/s10582-006-1013-6
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DOI: https://doi.org/10.1007/s10582-006-1013-6