3 research outputs found
A Universal Gas Interface for Simulations šâ´C and 䚳C Measurements
While simultaneous radiocarbon and 䚳C measurements have been available for organic materials (by accelerator mass spectrometry, AMS, and isotope ratio mass spectrometry, IRMS, respectively), this has not been possible for carbonates until now. Using an existing interface for gas ion source AMS measurements, we developed a prototype for a universal gas interface that allows simultaneous measurement of both carbon isotope ratios from potentially any source of COâ. First results obtained from reference materials (IAEA-C6, OxaII, PhA, IAEA-C1, IAEA-C2, ETH-4) show that for both organic as well as carbonate samples, the precision of radiocarbon measurements in the coupled mode is comparable to routine standalone AMS measurements. For IRMS 䚳C measurements, the performance for different materials shows more variation with precisions ranging from 0.07â° to 0.47â°. However, both organic materials and carbonates can achieve precisions as good as 0.13â°. Once fully automated, the method shows potential for filling the gap of simultaneous carbon isotope measurements for non-organic materials.ISSN:0033-822