摘要
伴随氚的衰变,应用氚标准鉴别“老水”已日渐困难。这要求采用电解富集后的液体闪烁计数法以提高氚的检测灵敏度,并应研究和推广~3H-~3He测年法以及与其它手段联合,注意排除氚信息的多解性。应用环境氚评价地下水年龄时,要求重新补给区历年大气降水氚浓度,作为地下水系统的氚输入变量。并注意地下水年龄的概念可能因埋藏条件和运动状态的不同而有差异。
As tritium gradually decays, to use it as a standard in discriminating 'old water' becomes more and more difficult. This requires us to adopt the liquid scintillation counting method after electrolysis concentration to enhance the detecting sensitivity of tritium. We should study and spread ~3H-~3He age determination method and combine with other means, noticing that the multisolutions of tritium information should be excluded. When applying environmental tritium to assess the age of groundwater, the past years' regional atmospheric precipitation recharge of tritium concentration should be taken as tritium input of the groundwater system.Remarking that the concept of groundwater age can be varied with the conditions of embedment and states of movement.
出处
《勘察科学技术》
1991年第5期34-38,13,共6页
Site Investigation Science and Technology
