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A kind of chromatographic analysis method

A chromatographic analysis and chromatographic column technology, which is applied to the analysis of materials, material separation, and measuring devices, can solve the problems of wasting analysis time and samples, and achieve the effects of saving samples, avoiding wasting time, and improving sample utilization.

Active Publication Date: 2016-03-09
BEIJING RUNZE KINSONG SCI & TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The two analysis modes are time-sharing sampling and time-sharing analysis. When switching between different analysis modes, samples need to be re-injected, which greatly wastes analysis time and samples.

Method used

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  • A kind of chromatographic analysis method
  • A kind of chromatographic analysis method
  • A kind of chromatographic analysis method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] see figure 2 , a chromatographic analysis device, comprising a sample inlet 51, a chromatographic column 21, a detector 71, a control unit 61 and a switching unit 41, and the switching unit 41 is respectively connected to the inlet split outlet 511, the chromatographic column outlet 211, the detector 71. The control unit 61 is connected;

[0043] Under the control of the control unit 61, the switching unit 41 selectively communicates the detector 71 with one / two of the split outlet 511 and the chromatographic column outlet 211;

[0044] The control unit can be manually controlled, or an independent unit module in the analysis device. At the same time, the control unit 61 also controls the entire analysis process, such as the time control of the analysis process, the temperature control of the injection port and the temperature control of the injection port. Sample, column temperature control, column sample emptying, etc.

[0045] In this embodiment, the control unit ...

Embodiment 2

[0066] see image 3 , a chromatographic analysis device, different from the chromatographic analysis device described in embodiment 1: the chromatographic analysis device of this embodiment also includes a membrane sampling interface 31, and the two ends of the membrane sampling interface 31 are respectively connected to the shunt The outlet 511 is connected to the solenoid valve 411 of the switching unit 41 .

[0067] The membrane sampling interface 31 only allows the organic matter in the sample gas to pass through, but the carrier gas cannot pass through. The membrane sampling interface described in this embodiment is a PDMS interface.

[0068] The detector 72 in this embodiment is a mass spectrometer detector, and the detector 72 in this embodiment is a hyperbolic ion trap mass spectrometer detector.

[0069] The present embodiment also provides a chromatographic analysis method, which is different from the chromatographic analysis method described in Example 1:

[0070...

Embodiment 3

[0074] see Figure 5 , a chromatographic analysis device, the same as the chromatographic analysis device described in Example 2.

[0075] This embodiment also provides a chromatographic analysis method, which is different from the chromatographic analysis method described in Example 2 in that: the sample inlet 51 is connected to the adsorption thermal analysis module 11, and the sample inlet 51 is connected to the sample inlet 51 through the adsorption thermal analysis module 11. Sample injection, wherein the sampling time is 0.5min; specifically:

[0076] In step A, the adsorption thermal analysis module 11 carries out sample sampling, and the sample comes out from the adsorption thermal analysis module 11 and enters the sample inlet 51 through the total flow pipeline, and the gas sample in the sample inlet 51 enters the gas sample connected to the sample inlet 51. flow path.

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Abstract

The invention relates to a chromatographic analysis device, which comprises a sample inlet, a chromatographic column, a detector and a control unit, and is characterized by further comprising a switch unit respectively connected with a shunt outlet of the sample inlet, an outlet of the chromatographic column, the detector and the control unit, wherein the switch unit enables the detector to be selectively communicated with one or two of the shunt outlet and the outlet of the chromatographic column under the control of the control unit. The invention further provides a chromatographic analysis method. The chromatographic analysis device and the chromatographic analysis method, provided by the invention, have the advantages of time conservation, high sample utilization rate, good sample analysis effectiveness and the like.

Description

technical field [0001] The invention relates to a chromatographic analysis device and method. Background technique [0002] Gas chromatography (GC) usually has two sample analysis methods: one is a direct analysis method, and the other is a column separation (GC) analysis method. [0003] The direct analysis method is to make the sample go directly to the detector without separation. What is obtained using the direct analysis method is the total response value of each substance in the sample. This analysis method can quickly obtain information on the degree of on-site pollution and major pollutants, and it is mainly used in on-site emergency detection. [0004] The chromatographic column separation analysis method is to separate the sample through the chromatographic column and enter the detector. The use of chromatographic column separation analysis method can separate various substances in the sample, so as to obtain the qualitative and quantitative information of vario...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N35/10G01N30/88
Inventor 段炼刘盈智马乔邓嘉辉尚艳丽朱蓉
Owner BEIJING RUNZE KINSONG SCI & TECH DEV CO LTD
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