Estimation of the absorbed dose in radiation-processed food--3: The effect of time of evaluation on the accuracy of the estimate.
Electron paramagnetic resonance (EPR) spectrometry is evaluated as a method to retrospectively assess the absorbed dose to radiation-processed chicken (containing bone). Decay of the hydroxyapatite paramagnetic center EPR signal intensity was monitored at three different dose levels (0.5, 3.0, 7.0 kGy) up to 20 days, and the dose was assessed for each level at 1, 8, and 20 days after irradiation. It was determined that the time of evaluation (up to 20 days post-irradiation) did not adversely affect the estimate for 0.5 and 3.0 kGy bone, and only moderately affected the 7.0 kGy estimates.
Ionizing Radiation Division, Department of Commerce, Gaithersburg, MD 20899.
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Desrosiers
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D000818:Animals; D001842:Bone and Bones / Q000528:radiation effects*; D002645:Chickens; D003037:Cobalt Radioisotopes; D004578:Electron Spin Resonance Spectroscopy; D005514:Food Irradiation; D005720:Gamma Rays; D066298:In Vitro Techniques; D011829:Radiation Dosage; D013057:Spectrum Analysis; D013997:Time Factors
D003037:Cobalt Radioisotopes