Standardization of chromatographic systems

Details Standardization of chromatographic systems Standardization of chromatographic systems

1998-05-14

1999-09-28

Therkorn, Ernest G.

Liquid purification or separation

Processes

Chromatography

95 82, 95 87, B01D 1508

Patent

active

059582464

ABSTRACT:
A primary chromatographic system is operated with a standard sample at several temperatures to generate primary retention times which are fitted to a function to determine thermodynamic constants to relate the times to temperature. A target chromatographic system is operated with the standard sample to generate secondary retention times. The function is used with these times to determine and an effective column parameter for the target system. The function then is used with this parameter and the primary times to determine a pressure program. Further operation of the target system with a application sample and the pressure program effects standardized retention times. A particular searching technique is utilized to apply the function. A temperature calibration technique with a selected sample measures column temperature for the target system, and a validation is done on the target system.

REFERENCES:
patent: 4579663 (1986-04-01), Poile
patent: 5303165 (1994-04-01), Ganz
patent: 5405432 (1995-04-01), Snyder
patent: 5545252 (1996-08-01), Hinshaw
patent: 5711786 (1998-01-01), Hinshaw

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