The Kore Compact EI-TOF-MS is a modular, computer-controlled flight time mass analyzer that is available as a desktop version.This tool is easily transported from one place to another, for example, in a car or van.It provides fast and sensitive gas analysis for production and research applications.
Due to the ease of operation and the ability of Compact EI-TOF-MS to make stable long-term measurements of the constituent gases at pressures from millibars to 10 bar, the equipment is well suited for monitoring the process, as well as for studies of catalysis and reaction kinetics.
Electron ionization (EI) is one of the first and most widely used ionization methods in mass spectrometry and has been used for more than 100 years.The ionization of an analyte molecule is based on a beam of electrons (usually) with an energy of 70 eV, removing an electron from the molecule during a collision. EI is described as hard ionization; excess energy in a collision produces a lot of fragmentation ions."Fingerprints" or structures of molecular and fragment ions can be linked to extensive databases such as NIST, and allow for mass spectral deconvolution.EI ionization is most often used for the ionization of VOCs and SVOC.
Specifications
TRANSPORTED
With only 870 x 540 x 380 mm, the Kore Technology EI-TOF-MS has been designed for transportation and can be taken on site (230 V mains power is required).
GAS INLET SYSTEM
The current inputs included as standard in Compact EI-TOF-MS include: (1) capillary input for fast (<1 second) analysis of inorganic gases and VOCs with high concentration, (2) membrane input for increased sensitivity to VOCs (up to ~ 50ppb) and detection of inorganic gases.The device can be connected to a gas chromatograph (for example, PREFICS) as a fast MS GC detector, and for a special device we have also built in a 16-position multi-position valve for process gas analysis.
HIGH TIME MODE
For short experiments (usually up to 20 minutes), it is possible to transfer information about all detected ions to disk, and then "reproduce" the data with the exact resolution of the experiment time that the user needs (and the counting statistics allow), In this mode, for example, it is possible to request complete mass spectra at time intervals of only 100 ms.Alternatively, you can request a time evolution graph of any kind with a time resolution of 100 ms.This type of functionality is useful for extracting most of the information from short-term experiments and is performed using existing GC-MS tools in the GRAMS software package.;
PROCESS MONITOR MODE
If the experiment lasts for many hours or even days, it is impractical to constantly run the device and save each recorded ion to disk.Instead, the user requests to receive a mass spectrum with a duration of x seconds every y seconds of elapsed time.Then the device operates in a mode in which the selected views are displayed on the graph "live" depending on the elapsed time of the experiment - essentially a process monitor type operation. For a live plot, the views are specified in advance in the settings table.At each data point, the full mass spectrum can be saved to disk, and therefore, at the end of the experiment, the user can restore the temporal evolution of any mass species with a time resolution determined by the frequency of data recording in the experiment.
