on 09-23-201905:34 AM - edited on 11-09-202103:48 AM by usermigration2
δ18O and δ13C Determination of Carbonates Alexander Duhr, Andreas Hilkert Thermo Fisher Scientific, Bremen, Germany AN30050 The Thermo Scientific Gas Bench II with the Carbonate-Option, an autosampler assisted sample preparation and loop injection interface, offers a fast and flexible alternative using modern continuous flow technology coupling to the ThermoScientific isotope ratio mass spectrometers DELTA V Advantage, DELTA V Plus and 253 Plus. The Gas Bench II in carbonate mode uses the principle of individual acid baths. Laboratories have shown that at least 80 samples per day (including 14 standards for quality control) can be processed in routine operation. An overall precision of 0.08 ‰ for δ18O and of 0.06 ‰ for δ13C or better has been achieved and accurate measurements of samples containing in excess of 100 μg of carbonate.