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目的通过对2014年延边地区水中放射性水平情况的调查研究,为延边地区水系的综合利用、边境地区不同饮用水水质存在的问题及对策分析提供依据。方法延边朝鲜族自治州共设5个县市为采样点(和龙市、龙井市、安图县、图们市、珲春市),每个采样点采集10份水样,总计50份。水中总α放射性和总β放射性测定采用蒸干法对其残渣用BH1217型低本底α/β放射性测量仪进行检测。结果延边五大边境地区总α、总β放射性项目的合格率都达到了100%;残渣量与总α放射性无线性关系;但与总β放射性有线性关系,残渣量越高,总β放射性值越低。结论监测结果表明,延边地区水体2014年处于正常的天然放射性本底水平。
Objective To investigate the radioactive levels of water in Yanbian area in 2014, and to provide basis for the comprehensive utilization of water system in Yanbian area and the existing problems and countermeasures of different drinking water quality in border areas. Methods A total of 5 counties (Yanlong, Longjing, Antu, Tumen and Hunchun) were collected from Yanbian Korean Autonomous Prefecture. A total of 50 samples were collected at each sampling point. Total α radioactivity and total β radioactivity in water were determined by evaporation-dry method using BH1217 low background α / β radioactivity meter. Results The percentages of total α and total β radioactivity in the five border areas of Yanbian reached 100%. The relationship between the amount of residue and total α radioactivity was linear. However, the relationship between the total β radioactivity and the total β radioactivity showed that the higher the total β radioactivity low. Conclusion The monitoring results show that the water bodies in Yanbian area are at normal natural radioactive background in 2014.