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Mass Spectrometry: expertise description

The key expertise of the mass spectrometry group is identification of compounds in synthetic-organic reaction products, structure elucidation of molecules involved in polymer chemistry, in process streams from feed stock to end product, pure (100 %) or in complex mixtures at trace level concentrations (ppm - ppb) by measuring the mass of the molecules and their fragments. The MS expertise is a combination of mass spectrometric expertise and experience built up over a period of fifty years with its applicability to DSM chemistry and materials. The experience is collected in spectrum libraries and analytical notes of DSM specific compound With our own MS equipment and in close colloboration with the DFS/R&D/ANA MS group in Delft and external partners at universities we can offer the entire MS toolbox for complex identification problems.

Techniques

Probe MS
Liquid SIMS
Fast Atom Bombardmnent
Electron ionisation and chemical ionisation
Matrix assisted laser desorption ionisation time of flight mass spectrometry (MALDI-TOF-MS)
Electrospray ionisation (ESI-MS)
Flow injection analysis - ESI-MS

Applications

MS can be used for analytical support at every step in the research and production process from monomer up to polymer, from lab scale via pilot plant to plant scale, including catalysts, additives, contaminations, impurities and so on and in nearly every matrix ranging from gasses to viscous- and solid heavy hydrocarbon fractions.
MS is in combination with separation techniques such as gas chromatography and liquid chromatography a powerfull technique for structure elucidation of components in complex organic mixtures.
Classical MS techniques such as probe-MS, Liquid SIMS or Fast Atom Bombardment, Electron ionisation and chemical ionisation are readily available for obtaining spectra.
Spectra are acquired in low resolution (fragmentation/verification) or high resolution (molecular composition) mode facilitating identification.
Matrix assisted laser desorption ionisation time of flight mass spectrometry (MALDI-TOF-MS) and Electrospray ionisation (ESI-MS) have extended the mass range of the molecules which can be analysed and are available for characterisation of oligomers and macromolecules.
Flow injection analysis - ESI-MS offers rapid determination of the molecular weight of macro-molecules including organometallics, chemical composition of oligomers.
Mass spectrometry is a powerful technique for quantitative analysis of components in mixtures, particularly, at low concentrations (ppm - ppb).
The MS group has adapted its spectrometric equipment to specific requirements for the analysis of water and oxygen sensitive compounds, e.g. metallocenes.
Structure analysis for verification purposes is partly carried out by our customers by means of an open-acces GC-MS with or without support from the group for interpretation.
The MS group is experienced in developing analytical methods on a short time scale and answering customer’s questions by translation of the problem into an analytical strategy and performing the analysis.


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