Dating shallow groundwater with SF6 in Shijiazhuang, Hebei, China
Dating groundwater is very important in hydrogeology and environmental geology. The method of dating shallow groundwater with sulfur hexafluoride (SF6) involves measuring the SF6concentration of groundwater, transforming the concentration to the molar ratio of SF6 in dry air, assigning a corresponding calendar age from a growth curve of SF6 in the atmosphere, and finally translating the calendar age into apparent age. 11 groundwater specimens were sampled in Shijiazhuang city, and analyzed for SF6 concentration, δ18O,δD, and noble gas concentrations. The assigned SF6 ages of shallow groundwater range from 0.5 to 22.5a in Shijiazhuang and tend to increase in age from the northwest to the southeast, consistent with hydrogeology conditions of the research region. The results indicate that the age of younger groundwater can be measured by SF6, and the assigned age in this region commonly does not exceed 20 years.
A.Zhou J.Zhou C.Liu Y.Gan J.Li J.Zhang
School of Environmental Studies, China University of Geosciences, Wuhan, Hubei, P.R.China
国际会议
第十二届水-岩相互作用国际研讨会(P0roceedings of the 12th International Symposium on Water-Rock Interaction)
昆明
英文
833-836
2007-07-31（万方平台首次上网日期，不代表论文的发表时间）