Process and installation for on-line analysis of a liquid product by liquid phase chromatography
AssigneeRhone-Poulenc Recherches
InventorClaude Guillemin
Life of this patent
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Abstract
This invention relates to a process and installation for on-line analysis of a liquid product by liquid phase chromatography, the device for carrying out the process including a sampling and treatment probe disposed within the product and a chromatograph associated with the probe. An eluate detector disposed remote from the chromatograph and a monitoring unit takes into account the variations of appearance of a noteworthy peak with respect to the same peaks of an earlier chromatogram.
Claims14
Apparatus for on-line analysis of a liquid product by liquid phase chromatography, comprising:
- sampling and treatment means disposed within said product to be analyzed for taking and treating a sample thereof,
- a chromatograph,
- means for transferring said sample to said chromatograph,
- means for establishing on-line a chromatogram of said sample,
- means for selecting a noteworthy peak from a reference chromatogram of the same product made under given conditions of temperature and flow rate;
- means for comparing the relative positions of corresponding noteworthy peaks on said reference chromatogram and sample chromatogram, respectively,
- means for determining a correction factor in accordance with any difference between said positions, and
- means for applying said correction factor to other peaks of said sample chromatogram.
Apparatus for on-line analysis of liquid product by liquid phase chromatography comprising a vessel containing said liquid product, a probe disposed in said product and comprising a tubular means extending into said product, a sampling and treatment head disposed in said tubular means for collecting a sample of said product, a chromatograph disposed in said tubular means and communicating with said head for receiving said sample, and a detector of eluates operably connected to said chromatograph.
Dependencies are inferred from the claim text.