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^(14)C辐射剂量评价模式中稳定碳份额研究 被引量:1

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摘要 目前在进行公众14C辐射剂量估算时,国内外仍推荐采用比活度模式。该模式是基于假定人体内14C与稳定碳浓度的比值等于环境大气中14C与稳定碳的比值。因此,空气、生物样品等环境介质中稳定碳的浓度的选取十分重要。为了较为准确的评价14C对公众产生的辐射剂量,本文对14C剂量评价模式中所采用的空气、生物样品中稳定碳的份额进行广泛调研的基础上,建议应考虑全球稳定碳浓度的增加,推荐空气中稳定碳浓度选取0.20 g/m3,即CO2在大气中的浓度由接近万分之三升高到万分之三点七。
出处 《辐射防护》 CAS CSCD 北大核心 2015年第S1期58-62,共5页 Radiation Protection
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