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This research project aims to improve our model assumptions and definitions of parameter values for the predictive modelling of iodine-129 (<sup>129</sup>I) to fruits.
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There is a large discrepancy between model predictions and actual measurements of <sup>129</sup>I in fruit from aerial discharges from Sellafield. This is mainly due to the lack of data on the transfer of <sup>129</sup>I to fruit. This project will improve our understanding in this area.
Iodine released into the atmosphere can exist in several chemical forms that have different transfer factors into foods. As a result, measured concentrations of <sup>129</sup>I often differ from predictions. Various approaches to measuring iodine were tested during the course of studies undertaken over the period 1993 to 1998. <p>Environmental concentrations were measured using radiochemical neutron activation analysis for filter material from atmospheric samplers and environmental materials (vegetation, milk and soils). Further work is being undertaken to investigate the transfer to fruit using mass spectroscopy to measure concentrations in fruit.
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The final report, "<a href="http://www.foodbase.org.uk/results.php?f_report_id=232" target="_new">Measurement of 129-I in fruit</a>" is available at Foodbase, an open access repository of the <acronym title="Food Standards Agency">FSA</acronym>.
<p>Find more about this project and other FSA food safety-related projects at the <a href="http://www.food.gov.uk/science/research/" target="_blank">Food Standards Agency Research webpage</a>.