Tritium age dating
Tritium, the radioactive isotope of hydrogen, is a perfect conservative tracer of water cycle in the environment.In hydrology, hydrogeology, limnology, and ocean research, knowledge of tritium concentration is, a powerful tool for groundwater age dating and for the estimation of circulation patterns and aquifer vulnerabilities.All prices are exclusive of GST and effective as of 1 March 2015.There is no VAT, GST or sales tax applicable to clients submitting from outside New Zealand.These problems can be overcome by using tritium in combination with its decay product He age formally calculated from equation (1) is an apparent age.
Costs for interpretation and reporting are additional, please contact us.
Interpretation of groundwater ages Most groundwaters are mixtures of water with different ages because of the nature of flow in porous media.
The age distribution depends on the hydrogeologic attributes of the aquifer concerned, as well as characteristics of the sampling point such as bore depth and screen length.
The tritium concentration of a sample can be calculated from the measured ), tse and tem are the times elapsed from sampling to extraction and from extraction to measurement, respectively, m and Δm are the masses of the sample and the vaporised water during the degassing step, and α=1.15 is the ratio of the tritium concentration in the liquid phase and the water vapour.
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