中文摘要：

放射性衰变产生的氦组分（^3H衰变产生^3He，U／Th衰变产生^4He）广泛地用于地下水测年。本文分析了地下水中惰性气体的组成，采用过剩空气非分馏（UA）模型进行了单独氦组分的分离。结果表明，河北平原第三含水组（Q2）中的过剩。He是含水组内原地产量和深部地壳通量的共同作用的结果。由于缺乏确定氦平衡参数的约束很好的客观分析，选择应用地下水流模型主观调节来估算迭代过程中的外部通量和流速场，然后根据这个模型所取得的^4He年龄与应用其他方法包括^14C测年和水文模型取得的年龄进行了对比。

英文摘要：

Being very important, radiogenic components of helium （^3He from ^3H, ^4He from U/Th） have been extensively used for groundwater dating. In this paper, the components of inert gases in groundwater were analyzed, and the separation of the individual helium component was performed with the unfractionated excess air （UA） model. The excess ^4He contained in third aquifer （Q2） discussed in this study came from the in-situ production of U/Th disintegration and the deep crustal flux. With no possibility of a well-constrained objective analysis of the parameters for determining the helium balance, the authors chose to estimate the external flux and the velocity field in an itemtive process by using subjective tuning of a groundwater flow model. The ^4He ages obtained from this model were then contrasted with ages obtained from other methods including ^14C dating and hydrological modeling.