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Device and method for switching between comprehensive two-dimensional gas chromatography and one-dimensional gas chromatography

A two-dimensional gas chromatography and gas chromatography technology is applied in the field of devices for switching between full two-dimensional and one-dimensional gas chromatography, which can solve the problems of blockage, inability to flow out smoothly, and inability to maintain proper temperature, etc. Achieve reliable results and change the separation sequence

Pending Publication Date: 2018-01-30
J&X ELECTRONICS TECH (SHANGHAI) CO LTD
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  • Application Information

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Problems solved by technology

In some modulators, the flow path passes outside the furnace, and the non-operating state cannot maintain a proper temperature, causing the analytes in the flow path to be blocked in the cooled modulator pipeline and cannot flow out smoothly

Method used

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  • Device and method for switching between comprehensive two-dimensional gas chromatography and one-dimensional gas chromatography
  • Device and method for switching between comprehensive two-dimensional gas chromatography and one-dimensional gas chromatography
  • Device and method for switching between comprehensive two-dimensional gas chromatography and one-dimensional gas chromatography

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Embodiment Construction

[0048] Figure 1-3 and the following description describe alternative embodiments of the invention to teach those skilled in the art how to make and reproduce the invention. In order to teach the technical solutions of the present invention, some conventional aspects have been simplified or omitted, and are illustrated with specific numerical values. Those skilled in the art will understand that modifications or substitutions derived from these embodiments, changes in parameters will be within the scope of the present invention. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the invention. As such, the invention is not limited to the alternative embodiments described below, but only by the claims and their equivalents.

[0049] Below in conjunction with accompanying drawing, the present invention is described in further detail by embodiment:

[0050]Such as figure 1 As shown, the two...

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Abstract

The invention discloses a device and a method for switching between comprehensive two-dimensional gas chromatography and one-dimensional gas chromatography. The switching device comprises a gas supplement module, a switching switch, first to fourth interfaces, a first air resistor and a second air resistor, wherein a first end of the second interface is connected with a first end of the second airresistor through a first pipeline; a second end of the second air resistor is connected with a first end of the third interface through a second pipeline; the outlet of the gas supplement module is connected with the switching switch through a third pipeline; a first outlet of the switching switch is connected with the first pipeline on a first node through a fourth pipeline; a second outlet of the switching switch is connected with the first pipeline on a second node through a fifth pipeline; two ends of the first air resistor are connected with the fourth pipeline and the fifth pipeline respectively; a first end of the first interface is connected with the first pipeline between the first node and the second node through a pipeline; a first end of the fourth interface is connected withthe second pipeline through a pipeline. The device and the method can automatically switch between the comprehensive two-dimensional gas chromatography and the one-dimensional gas chromatography, andthe demand of alternatively using the comprehensive two-dimensional gas chromatography and the one-dimensional gas chromatography with one instrument is met.

Description

technical field [0001] The invention relates to the technical field of analytical instruments, in particular to a device for switching between comprehensive two-dimensional gas chromatography and one-dimensional comprehensive two-dimensional gas chromatography. Background technique [0002] Comprehensive Two-dimensional Gas Chromatography (GC×GC for short) is a new chromatographic analysis technique developed on the basis of traditional one-dimensional gas chromatography in the 1990s. The main principle is to connect two chromatographic columns with different separation mechanisms and independent of each other in series, and a modulator is installed in the middle. Periodic pulses are released into a second column for continued separation and finally to a chromatographic detector. In this way, the components (co-distillates) that are not completely separated in the first dimension are further separated in the second dimension, and the effect of orthogonal separation is achie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02
Inventor 赵之骏徐强官晓胜江海
Owner J&X ELECTRONICS TECH (SHANGHAI) CO LTD
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