Chromatographic Data System Processing Apparatus

Abstract

A chromatographic data system processing apparatus includes a liquid feeder, a sample injector, a column that separates samples, a detector, a controller that processes a detected result of the detector, and a data processor that examines and sets operations of the liquid feeder, the column and the detector, and a measurement condition. The data processor generates a three-dimensional graph having three axes related to a pressure, a time, and a number of theoretical plates based on data or variables indicating a relationship between the number of theoretical plates and a flow rate, and data or variables indicating a relationship between the pressure and the flow rate. The chromatographic data system processing apparatus can easily obtain a separation condition for obtaining performance from a three-dimensional graph including a pressure drop, a hold-up time and a number of theoretical plates.

What is claimed is: 
     
         1 . A control method for a chromatographic data processor that analyzes and processes data of an analysis condition and a detection result of a chromatograph, comprising:
 an input step inputting data or variables indicating a relationship between a number of theoretical plates and a flow rate, and   an output step outputting a partial differential coefficient in a function (z k ) of two independent variables (x i , x j ) selected from a variable (x 1 ) indicating the flow rate, a variable (x 2 ) indicating a length, a variable (x 3 ) indicating a pressure, and a variable (x 4 ) indicating a time.   
     
     
         2 . The control method according to  claim 1 ,
 wherein the output step outputs a three-dimensional graph of the partial differential coefficient.   
     
     
         3 . The control method according to  claim 1 ,
 wherein the output step outputs a dimensionless efficiency standardized with using the independent variable to be partially differentiated based on the partial differential coefficient.   
     
     
         4 . The control method according to  claim 3 ,
 wherein the output step outputs a third dimensionless efficiency calculated based on a first dimensionless efficiency and a second dimensionless efficiency.   
     
     
         5 . The control method according to  claim 3 ,
 wherein the output step outputs the dimensionless efficiency as a three-dimensional graph and/or separation condition analysis.   
     
     
         6 . A chromatographic data processor that analyzes and processes data of an analysis condition and a detection result of a chromatograph,
 wherein the chromatographic data processor is programmed to input data or variables indicating a relationship between a number of theoretical plates and a flow rate, and   the chromatographic data processor is further programmed to output a partial differential coefficient in a function (z k ) of two independent variables (x i , x j ) selected from a variable (x 1 ) indicating the flow rate, a variable (x 2 ) indicating a length, a variable (x 3 ) indicating a pressure, and a variable (x 4 ) indicating a time.   
     
     
         7 . The chromatographic data processor according to  claim 6 ,
 wherein the chromatographic data processor is further programmed to output a three-dimensional graph of the partial differential coefficient.   
     
     
         8 . The chromatographic data processor according to  claim 6 ,
 wherein the chromatographic data processor is further programmed to output a dimensionless efficiency standardized with using the independent variable to be partially differentiated based on the partial differential coefficient.   
     
     
         9 . The chromatographic data processor according to  claim 8 ,
 wherein the chromatographic data processor is further programmed to output a third dimensionless efficiency calculated based on a first dimensionless efficiency and a second dimensionless efficiency.   
     
     
         10 . The chromatographic data processor according to  claim 8 ,
 wherein the chromatographic data processor is further programmed to output the dimensionless efficiency as a three-dimensional graph and/or separation condition analysis.