a18_CO2_H2O() calculates the 18O/16O fractionation factor
between dissolved CO2 and liquid water.
a18_CO2aq_H2O(temp)Returns the 18O/16O fractionation factor.
Temperature (°C).
$$\alpha^{18}_{CO2(aq)/H2O(l)} = e^{2.52 \times \frac{1000}{T^{2}} + 0.01212}$$
Beck, W. C., Grossman, E. L., & Morse, J. W. (2005). Experimental studies of oxygen isotope fractionation in the carbonic acid system at 15°, 25°, and 40°C. Geochimica et Cosmochimica Acta, 69(14), 3493-3503. tools:::Rd_expr_doi("10.1016/j.gca.2005.02.003")
Other fractionation_factors:
a13_CO2g_CO2aq(),
a18_CO2acid_c(),
a18_CO2g_H2O(),
a18_CO3_H2O(),
a18_H2O_OH(),
a18_HCO3_H2O(),
a18_c_H2O(),
a_A_B()