Abstract
Chemical treatment with alkaline solution is used to extract enamel from teeth for retrospective ESR (EPR) dosimetry. It was confirmed in the present study that our condition of chemical treatment does not affect retrospective doses of cow teeth. The method was applied to 10 teeth collected in the South Ural region where the soil is contaminated with Sr 90 . As a result, no noticeable doses were detected so far. Significant variations of sensitivity of the radiation-induced ESR signal to radiation were found for different cow teeth, indicating that individual calibration is necessary.
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