重铀酸盐中硫酸根的浊度法测定

摘要

Through the measurements of environmental gamma-radiation absorbed dose rate, atmospheric radon concentration,surface radon exhalation rate and radon concentration in soil in a region,an appropriate estimation model was chosen to estimate per capita absorbed dose rate in the region. Based on the assessment of radiation in the region,the place can be divided into development area,limited development area .polluted area and source item area, and reliable information on radioactive environment can be provided for relevant departments formulating land planning and management.%建立硫酸钡比浊法测定重铀酸盐中硫酸根的分析方法.试验表明,硫酸根质量浓度在16～40 μg/mL(在25 mL容量瓶中)时线性良好,线性相关系数(r) ＞0.997.称样质量约0.5g时,该方法的检出下限为0.4％,样品加标回收率为90.7％～105％,硫酸根质量分数为5.72％时,样品测定相对标准偏差为2.8％,0.4mg氟、10 mg钙对测定无干扰.