The Zoex two-dimensional gas chromatography with its ccuTOF GCV 4G high-resolution time-of-flight mass spectrometer.
The AccuTOF GCV 4G is designed to switch easily between electron ionisation (EI) and field ionisation (FI) modes, combining the power of database searching in EI mode with unambiguous molecular weight information in FI mode.
Unlike chemical ionisation (CI), field ionisation does not require a reagent gas and FI mass spectra are very simple, consisting of molecular ions with little or no fragmentation.
Accurate mass measurements can be carried out in either EI or FI mode, or with the optional CI ion source. JEOL claims it is the only mass spectrometer system to offer GC x GC with all three ionisation modes: EI, FI, and CI to produce high-resolution accurate-mass spectra.
