Exercise 7
- The[latex]{\ SF}_{6}[/latex] concentration of a groundwater sample collected in 2018 was 2.6 fmole/kg. An fmole is a femtomole which is an amount of substance equal to 10−15 moles. The mean annual temperature in the recharge zone of the aquifer is 15 °C and the elevation of the water table in the recharge zone is 800 m.
Calculate the tracer age of this sample.
- An analysis of noble gases indicates that the sample in Exercise 7(a) contains 0.003 ccSTP/g of UA.
Recalculate the tracer age of the sample including excess air.