isotopic tracer calculator
spike_with.RdThis function can be used to approximately calculate the amount of pure stable isotope tracer that needs
to be added to a reference solution to reach a desired change in delta permil isotope abundance.
Uses the assumption that isotope tracer amount is negligible compared to light fraction and
that the weight difference between heavy and light isotopes is also negligable.
![[Stable]](figures/lifecycle-stable.svg)
spike_with(delta_x, delta_y, R_std = 1/6420, m_x = 1000)Arguments
- delta_x
The delta value in permil of the current tracer abundance in the solution
- delta_y
The delta value in permil of the desired tracer abundance in the solution
- R_std
The isotopic ratio if the reference standard. Default is VSMOV (1/6420) for deuterium.
- m_x
The mass of the solution in grams. E.g., for 10L of water, m_x is approximately 10e4 g. Default is 10e3 (1L)
Value
Amount of (pure) tracer that needs to be added in grams.