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Dynamic Headspace Sampling with the GERSTEL MPS MultiFlex


GERSTEL's Dynamic Headspace Sampler

When sampling volatile organic compounds from any matrix, there is a range of different headspace sampling techniques that can be used. In addition to simple static headspace sampling you could consider using solid phase micro extraction or headspace solvent micro extraction for example.

One thing you could be sure of is that the profile of peaks you get will be different with each technique. Some compounds will give good recoveries, others, poor ones.

This is no big deal in target analysis – you simply pick the technique that gives you the best result for your target compounds and carry out some optimisation.

If you are faced with the task of screening for volatile unknowns, however, this is a big problem.

If you don’t know what you are looking for, how do you know which sampling technique to use?

This is where Dynamic Headspace Sampling (DHS) comes into its own. Of all the ways currently available of analysing for volatile compounds, DHS is the one that comes closest to giving good recoveries for all volatile analytes. This is especially true if you use DHS in fully evaporative mode as this eliminates any effects due to the matrix, and offers less discrimination on a basis of polarity.

The Agilent 7200 high resolution accurate mass GCqTOF is a great tool for the analysis of unknown volatile organics, and the GERSTEL MPS MultiFlex was conceived as the best possible compliment to this instrument. DHS is offered as an option on the MultiFlex.

You can find more information on Dynamic Headspace Sampling here.

If you would like to visit our laboratory and see DHS in action on our GCqTOF then call us on +44 (0)1223 279210 or email enquiries@anatune.co.uk.



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