Abstract
The Nigerian Research Reactor-1 was employed in the analysis of iodine in local food samples at an operating flux of 5.0×1011 ncm−2 s−1. Preconcentration neutron activation analysis (PCNAA) was compared against the most common spectroscopic (Sandell-Kolthoff reaction) technique, giving a concentration range of 0.295 to 2.960 mg/Kg and 0.264 to 2.725 mg/Kg, respectively, with an average percentage deviation of 11.34% and a positive correlation between the methods at 0.89. PCNAA and Sandell-Kolthoff spectroscopy of NIST 1548a reported values of 0.759±0.06 mg/Kg and 0.751±0.05 with Student’s t-test score of 1 and 0.95 and percentage standard deviation of 0 and 1.12%, respectively.
Highlights
Iodine is an essential component of the thyroid hormones: thyroxine (T4) and triiodothyronine (T3), comprising 65 and 59 percent of their respective weights [1]
The body is unable to synthesize the thyroid hormones, and because they regulate metabolism in every cell of the body and play a role in virtually all physiological functions, iodine deficiency can have a devastating impact on health and well-being summarily termed iodine deficiency disorders (IDD)
Significant challenge arises from the utilization of Nigerian Research Reactor-1 (NIRR-1) in analysis of iodine in biological matrix, primary due to the low flux and external position of the cadmium lined irradiation channel
Summary
Iodine is an essential component of the thyroid hormones: thyroxine (T4) and triiodothyronine (T3), comprising 65 and 59 percent of their respective weights [1]. The thyroid hormones T4 and T3 regulate many key biochemical reactions, protein synthesis and enzymatic activity. Iodine concentrations in biological matrix have been analyzed using a variety of techniques including spectroscopy [5,6,7], inductively coupled mass spectrometry [8,9,10], and ENAA [11,12,13] with the neutron activation analysis and mass spectrometry reporting the lowest detection limits and best sensitivities [13]
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