关键词:辐射照射剂量;天然辐射;医疗照射;核试验落下灰;职业照射
目的 系统总结了各种电离辐射源对正常生活条件的中国人所致照射剂量,为评价剂量\|效应关系提供有意义的背景材料。方法 基于大量调查研究和监测数据进行分析对比研究。结果 中国人受各种电离辐射源的照射剂量,年有效剂量为2.5mSv/a,来自天然辐射的剂量占总剂量的92%。结论 至今我国广大公众所受到的电离辐射照射仍以天然辐射为主。本文给出了各种电离辐射源所致剂量份额。
Portions of exposure doses from varied radiationsources to Chinese population
Zhu Changshou.Laboratory of Industrial Hygiene,Ministry of Health, Beijing 100088 China.
Objective To summarizesystematically the radiation exposure dose from varied sources to the population living innormal condition in China,providing significant background material for assessment ofdose-effect relationship.Method Analysis and study were carried outbased on extensive investigation materials and monitoring data.Results Theaverage annual effective dose from all kinds of ionizing radiation sources to Chinesepopulation is 2.5 mSv/a.The contribution of dose from natural radiation is 92% of thetotal dose.Conclusion The natural radiation is the main contribution ofthe exposure dose from all kinds of ionizing radiation up to now.This study gives theportions of varied sources of ionizing radiation in China.
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