反向地球化学模拟技术在地下水14C年龄校正中应用的进展与思考

地下水¹⁴C年龄校正一直是地下水年代学研究中的一个热点问题，将反向地球化学路径模型与同位素质量传输模型耦合起来，在综合考虑不同碳源、不同水文地球化学反应对¹⁴C质量传输影响的基础上，提出了一种新的综合性的校正方法，从而使地下水¹⁴C定年技术得到了进一步发展。识别深层地下水演化过程中影响¹⁴C浓度变化的主要因素并定量确定其对地下水¹⁴C浓度的影响程度是地下水¹⁴C校正的精度和可信度的重要考虑因素；在应用水文地球化学路径模拟技术进行地下水¹⁴C年龄校正时，必须要充分考虑地下水补给环境特点以及反向地球化学模拟模型中的非可行解的排除。

Application of Inverse Geochemical Modeling in the Correction of Groundwater 14C Dating:advances and Thoughts

Correction of groundwater 14C dating is the hot spot in the research on groundwater dating.The coupling of inverse geochemical reaction path model and isotope mass transfer model can be completely involved in the effects of different carbon sources and different hydrogeochemical reactions on 14C mass transfer,which has made the correction technique of groundwater 14C dating in a new state.Identification of the main factors and their extent affecting the concentration of 14C in the groundwater evolution is of high importance for the accuracy and reliability of groundwater 14C age correction result.The specific character of recharge environment and the removal of non-possible solutions should be paid more attention in application of inverse geochemical modeling in the correction of groundwater 14C da-ting.