Description Usage Arguments Details Value References See Also Examples
a18_CO2acid_c()
calculates the 18O/16O fractionation factor between
CO2 produced from acid digestion and carbonate.
1 | a18_CO2acid_c(temp, min)
|
temp |
Acid digestion temperature (°C). |
min |
Mineralogy. Options are |
calcite (Kim et al. 2015):
α^{18}_{CO2acid/calcite} = e^{(3.48 \times \frac{1}{T} - 0.00147)}
aragonite (Kim et al. 2007):
α^{18}_{CO2acid/aragonite} = e^{(3.39 \times \frac{1}{T} - 0.00083)}
Returns the 18O/16O fractionation factor.
Sharma, T., and Clayton, R. N. (1965). Measurement of ratios of total oxygen of carbonates. Geochimica et Cosmochimica Acta, 29(12), 1347-1353. doi: 10.1016/0016-7037(65)90011-6
Kim, S.-T., Mucci, A., and Taylor, B. E. (2007). Phosphoric acid fractionation factors for calcite and aragonite between 25 and 75 °C: Revisited. Chemical Geology, 246(3-4), 135-146. doi: 10.1016/j.chemgeo.2007.08.005
Kim, S.-T., Coplen, T. B., and Horita, J. (2015). Normalization of stable isotope data for carbonate minerals: Implementation of IUPAC guidelines. Geochimica et Cosmochimica Acta, 158, 276-289. doi: 10.1016/j.gca.2015.02.011
Other fractionation_factors:
a13_CO2g_CO2aq()
,
a18_CO2aq_H2O()
,
a18_CO2g_H2O()
,
a18_CO3_H2O()
,
a18_H2O_OH()
,
a18_HCO3_H2O()
,
a18_c_H2O()
,
a_A_B()
1 2 | a18_CO2acid_c(temp = 90, min = "calcite")
a18_CO2acid_c(temp = 72, min = "aragonite")
|
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