System consists of a fully automated sample preparation module and a sample processing module, interfaced in continuous flow mode to a dedicated isotope ratio mass spectrometer
GV Instruments has introduced a preparation system for carbonates which prepares and reacts up to 132 samples automatically, particularly useful in paleoclimate research.
The system consists of a fully automated sample preparation module and a sample processing module, interfaced in continuous flow mode to a dedicated isotope ratio mass spectrometer (IRMS).
Traditionally, the measurement of 13C and 18O from carbonate samples has been made using a dual inlet IRMS, interfaced online to an automated sample preparation system.
However, while this technique produces extremely reliable data results, the complexity of the instrumentation requires a highly skilled member of staff and needs a high level of maintenance.
These disadvantages, together with a low daily sample throughput, often result in prohibitively high costs.
Alternatively, measuring 13C and 18O from carbonate with the IsoPrep C does not demand the experimental rigour of the classical technique.
The analysis is performed on far less challenging instrumentation developed for high throughput and truly routine operation without the need for an experienced operator.
Furthermore, each sample is prepared and reacted with acid individually, thus eliminating memory effects observed with 'common acid' bath systems and allowing the analysis of trace metals on the residue, if required.
The IsoPrep B may be added to the GV2003 mass spectrometer, or as an upgrade to the Sira series II, Optima or Prism to provide high throughput d18O determination of water.
Employing a full automated gas preparation interface module (APGP) with integral water trap, GC and reference gas injector, it is capable of batch runs of over 200 breath samples each, at a rate of about two minutes per sample, or carbonates from the carbonate prep at about 10 minutes per sample.
As with the IsoPrep C, the IsoPrep BT is a great improvement on previous d18O determination methods, which have traditionally been performed using an automated, temperature controlled equilibration system, interfaced online to a dual inlet IRMS.
