Oxygen Isotope Analysis of Saline Solutions by a Carbonic anhydrase-Catalyzed CO2–H2O Equilibration Method (C3HEM) with an Improved Drying Technique

The recently introduced carbonic anhydrase-catalyzed CO2–H2O equilibration method (or C3HEM) for oxygen isotopes of aqueous samples has remarkably improved the analytical efficiency of the classic and most popular stable isotope analytical method in geochemistry. However, the applicability of this novel analytical method has not yet been tested for saline/hypersaline solutions despite their significance in various scientific problems. In this …