Online degassing device for ion chromatograph

An ion chromatograph and degassing device technology, applied in the field of online degassing devices, can solve problems such as changes, affecting detection sensitivity, and secondary generation of bubbles

Inactive Publication Date: 2015-01-28
许爱华 +1
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Problems solved by technology

[0002] In the prior art, it is well known that during the liquid chromatography analysis, the gas dissolved in the mobile phase escapes in the form of bubbles when mixed, which not only affects the separation efficiency of the chromatographic column, but also affects the stability of the detector baseline Therefore, it is necessary to remove the gas in the mobile phase. At present, mos

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  • Online degassing device for ion chromatograph
  • Online degassing device for ion chromatograph

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[0016] In order to clearly illustrate the technical characteristics of this solution, the following describes this solution through a specific implementation and in conjunction with the accompanying drawings.

[0017] It can be seen from the drawings that an ion chromatograph on-line degassing device of this scheme includes a casing 1, the casing 1 is a metal casing, and the permeation tube 2 is arranged in the casing 1, and the permeation tube is Amorphous fluororesin degassing tube. The vacuum pump 6, the vacuum pump 6 communicates with the inside of the casing 1 through the pipeline 4, the casing 1 is provided with an electric heater 3, and the casing 1 is also provided with an ion chromatograph flow path connector 5 and an ion chromatograph flow path connector 5 Connected to the permeation tube 2, a thermistor RT is arranged on the housing 1, one end of the thermistor RT is connected to VCC through a first resistor R1, the other end of the thermistor RT is grounded through a ...

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Abstract

The invention provides a technical scheme of an online degassing device for an ion chromatograph. The device in the scheme comprises a housing, a permeation tube arranged in the housing and a vacuum pump. The online degassing device is characterized in that the vacuum pump is communicated with the inside of the housing through a pipeline; the housing is provided with an electric heater and an ion chromatograph flow path joint which is communicated with the permeation tube; degassing is realized by the differential pressure inside and outside the permeation tube; and a thermistor RT is arranged on the housing. By using the device in the scheme, heating is carried out while degassing, so that the degassing efficiency is improved, and twice generation of bubble molecules by temperature influence is avoided.

Description

technical field [0001] The invention relates to an ion chromatograph, in particular to an online degassing device for the ion chromatograph. Background technique [0002] In the prior art, it is well known that during the liquid chromatography analysis, the gas dissolved in the mobile phase escapes in the form of bubbles when mixed, which not only affects the separation efficiency of the chromatographic column, but also affects the stability of the detector baseline Therefore, it is necessary to remove the gas in the mobile phase. At present, most of the vacuum pumps are used to pump the gas, so that a pressure difference is generated inside and outside the permeation tube, and the dissolved gas in the mobile phase can be removed through the wall of the permeation tube. However, due to the degassing process , the temperature will change, and bubbles will be generated twice, which will affect the subsequent detection sensitivity. This is the weak point that existing technolo...

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Application Information

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IPC IPC(8): G01N30/14
Inventor 许爱华姜咏栋李文明赵玉敏李文侠李金刚朱建强
Owner 许爱华
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