【摘要】 目的对饮用水中的¹⁴C含量进行测定,并对其可能产生的内照射剂量进行估算,以评价其对人体健康的影响。方法采集福建省和海南省的自来水和井水样品进行无机¹⁴C含量的测定,采用鼓泡法作前处理,直接吸收法制备样品,液闪谱仪测量。结果 16个样品的分析结果表明不同地区的自来水¹⁴C含量存在较大差别,井水与自来水中的无机¹⁴C含量也存在明显差异。居民饮用井水和自来水途径摄入的¹⁴C所致的有效剂量存在差别。结论公众通过饮用水途径摄入的¹⁴C所致的待积有效剂量基本在10^-9Sv/a量级,可以认为天然环境下,从饮用水途径造成的¹⁴C内照射剂量很低,不会对人体造成影响。更多还原

【Abstract】 Objective To evaluate the effects on human health of carbon-14 in drinking water by determining it and estimating the in-take dose. Methods Inorganic radiocarbon concentration in some tap-water and well water samples from Fujian and Hainan province were determined. A simple inorganic radiocarbon measurement procedure was employed,using the bubbling and direct absorption method,followed by low-level liquid scintillation spectrometry.Results The results of sixteen samples showed there was difference in tap-water from different district,and there was difference between tap-water and well waer. The effective dose caused by drinking well water was different from tap-water.Conclusion The effective dose caused by drinking water which was about 10^-9 Sv/a,impact on health can be ignored.更多还原