Van Deemter's equation

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Van Deemter's equation

[van dēm′tərz]

an expression of a gas chromatography relationship between the height equivalent to the theoretic plate and the linear velocity of the carrier gas.

References in periodicals archive ?

Using the van Deemter equation, which predicts an optimum velocity at which there will be the minimum variance per unit column length and therefore a maximum efficiency, it can be deduced that the linear flow rate of hydrogen can be greater than that of helium, but also offer equal peak separation efficiency.

Hydrogen: minimizing risks, maximizing results: on-site hydrogen generators are safe, reduce run times and improve gas chromatography results

The UPLC system took advantage of the basic van Deemter equation governing IC separations and the development of smaller LC column particles (sub-2-micron).

Growth of UHPLC-enabled technologies: development of new ultra-high performance liquid chromatography and mass spectrometry technologies has seen dramatic growth in the past decade--and look for even more in the near future

Using the van Deemter equation, which predicts an optimum velocity at which there will be the minimum variance per unit column length and, therefore a maximum efficiency, it can deduced that the linear flow rate of hydrogen can be greater than that of helium but also offer equal efficiency in the gas's ability to separate peaks.

Hydrogen facilitates faster, safer GC runs: as helium becomes a rarer resource for gas chromatography practitioners, hydrogen is filling the void as a viable alternative that can offer superior results