【摘要】 <正> 一、前言K是人体内的重要元素之一,主要通过食物摄入。国外早已对大样本人群体内K含量作过调查,积累了大量资料。目前虽然也有关于我国人体内K含量的报道,但总的来讲还很不充分。为此我们对1208名中国成年人体内K及⁴⁰K的含量进行了调查。更多还原

【Abstract】 1200 Chinese adults of both sexes were studied for their body K and ⁴⁰K using a low background whole-body counter. The K values were found to have an average of 1.84±0.35g/kg body weight for males and 1.60±0.29g/kg body weight for females. The average K value for both sexes was 1.76±0.33g/kg body weight. The annual absorbed dose was between 0.13～0.15 mSv for males and 0.10-0.11 mSv for females respectively. The ⁴⁰K activity per unit body weight varied inversely with slenderness and total K varied directly with body-build index.更多还原