Dilution-free linear curve chromatograph and linear curve measuring method

Abstract

The invention provides a dilution-free linear curve chromatograph and a linear curve measuring method. The dilution-free linear curve chromatograph comprises two separating columns, two pumps, a plurality of quantitative tubes, a twelve-way changeover valve and two selector valves for selecting different quantitative tubes to be communicated with the twelve-way changeover valve, wherein the separating columns, pumps and selector valves are respectively connected with the twelve-way changeover valve; and each selector valve is connected with a plurality of quantitative tubes. The selector valves are utilized to select different quantitative tubes to participate in detection; the quantitative tubes have different volumes, so that the different quantitative tubes can be utilized to change the number of substances entering the separating columns so as to obtain solutions with different concentrations; and in the measuring process, the operating personnel do not need to prepare solutions with different concentrations to perform measurement, thereby effectively preventing the container and artificial errors from influencing the accuracy of the linear curve, implementing the process of free of artificially diluting the solution, and enhancing the measurement accuracy of the dilution-free linear curve chromatograph.

Description

technical field [0001] The invention relates to a chromatographic testing device, in particular to a chromatographic instrument for making a linear curve without dilution and a method for measuring the linear curve. Background technique [0002] Chromatography is an instrument for qualitative and quantitative analysis of substances using chromatography. Such as figure 1 and figure 2 As shown, the chromatograph in the prior art generally includes a workstation 101, a detector 102, a detection cell 103, a separation column 104, a quantitative tube 105 and a twelve-way switching valve 106, and the two ends of the quantitative tube 105 are connected to a twelve-way switching valve. On the two ports of the valve 106 , the external sample injector 108 is connected to the twelve-way switching valve 106 , and the eluent container 107 is also connected to the twelve-way switching valve 106 through the pump 1071 . When analysis is required, first, such as figure 1 As shown, the s...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a chromatographic instrument for making a linear curve without dilution and a linear curve measurement method, solve the defect that the chromatographic instrument in the prior art is affected by human factors and cause the measurement accuracy to decrease, and realize the improvement of the measurement of the chromatographic instrument. Accuracy, reduce the workload of the operator, convenient for users to use and operate

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