论文部分内容阅读
钾广泛地分布于自然界中,是生命活动中必不可少的元素.钾通过食物进入体内其β辐射形成对人体的内照射给人类健康带来潜在的危险,因此国内外学者对环境水和食品中钾的含量颇为重视.钾-40是天然放射性核素,在天然钾中的丰度为0.0119%,89%为β衰变,这样经计算每克天然钾中含钾-40的β放射性为28贝柯.
Potassium is widely distributed in nature and is an indispensable element of life activities.Potassium into the body through the formation of potassium on the human body caused by internal radiation poses a potential hazard to human health, so domestic and foreign scholars on environmental water and food Potassium content of considerable attention.K-40 is a natural radionuclide, natural potassium in the abundance of 0.0119%, 89% β decay, so calculated per gram of natural potassium potassium-40 beta radioactivity 28 Beko.