High temperature pyrolysis (OH/H/O isotope analysis):
Oxygen is converted to CO and hydrogen to H2 via reductive pyrolysis at up to 1,500 °C. While CO is trapped and preconcentrated on a column, H2 travels directly to the mass spectrometer. Only when the H2 peak has resolved to baseline, CO is swept off the column with clean helium, while undesired byproduct gases are vented out of the system. This gurantees complete separation of the target analyte CO from undesirable gases prior to transfer into the mass spectrometer.
High-temperature combustion unit & Purge and trap chromatography (CNS isotope analysis*):
Complete sample digestion at up to 1,200 °C (or 1,800 °C at the point of combustion when tin foil is used). A jet injection of oxygen directly to the sample leads to the highest oxygen concentrations at the point of combustion, as well as low gas consumption. This gurantees 100 % recovery even for samples, that are traditionally hard to combust. Separation of gaseous components on two gas-selective columns. These columns trap the gases until they are heated up. The release of a gas is only initiated, when the prior gas peak has reached baseline. This results in perfect peak separation without overlap, and automatic optimization of the analysis time.