Activity Concentrations and Population Dose from Radium-226 in Food and Drinking Water in Taiwan

摘要

The purpose of this study was to determine the radioactivity of↑(226)Ra in environmental samples in Taiwan. Fish, pork, rice, flour, chicken, vegetable, milk, fruit, egg and water samples were collected and pretreated by radiochemical procedure to extract the↑(226)Ra, and the activity concentrations of↑(226)Ra were determined using a liquid scintillation counter. The↑(226)Ra content of groundwater was 12.0 mBq 1↑(-1). The↑(226)Ra contents of the food ranged from 0.02 Bq kg↑(-1) fresh to 0.17 Bq kg↑(-1) fresh The annual internal dose from ingestion of↑(226)Ra from food and drinking water per caput was evaluated to be 7.5μSv. # 1997 Elsevier Science Ltd. All rights reserved