equil_frac: Liquid-vapor equilibrium fractionation

Description Usage Arguments Details Value

Description

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.

Usage

1
equil_frac(Ta, element)

Arguments

Ta

Air temperature, T_{a} (C).

element

Character indicating "Hydrogen" or "Oxygen".

Details

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.

Value

Numeric value of equilibrium fractionation factor from liquid to vapor - a unitless value.


jmerc13/LakeIsodrology documentation built on May 5, 2019, 5:52 p.m.