Description Usage Arguments Details Value
Estimates the temperature-dependent equilibrium fracitonation factor (aka, isotope effect), α^*_{LV}, of common water isotopes (i.e., 2-Hydrogen and 18-Oxygen) between the liquid and vapor phases.
1 | equil_frac(Ta, element)
|
Ta |
Air temperature, T_{a} (C). |
element |
Character indicating "Hydrogen" or "Oxygen". |
Fractionations determined via (Majoube 1971):
Hydrogen: 10^{3} \ln(α^*_{LV}) = 24.844(10^{6}/(T_{a} + 273.15)^{2}) - 76.248(10^{3}/(T_{a} + 273.15)^{2}) + 52.612
Oxygen: 10^{3} \ln(α^*_{LV}) = 1.137(10^{6}/(T_{a} + 273.15)^{2}) - 0.4156(10^{3}/(T_{a} + 273.15)) - 2.0667
Majoube M. 1971. Oxygen-18 and deuterium fractionation between water and steam (in French). Journal de Chimie Physique et de Physico-Chimie Biologique 68: 1423–1436.
Numeric value of equilibrium fractionation factor from liquid to vapor - a unitless value.
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