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An online degassing device for an ion chromatograph

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

Inactive Publication Date: 2016-05-04
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, 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

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  • An online degassing device for an ion chromatograph

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Embodiment Construction

[0016] In order to clearly illustrate the technical features of the solution, the solution will be described below through a specific implementation mode combined with the accompanying drawings.

[0017] As can be seen from the accompanying drawings, an online degassing device for an ion chromatograph of the present program includes a housing 1, the housing 1 is a metal housing, and the permeation tube 2 arranged in the housing 1, the permeation tube is Amorphous fluororesin degassing tube. Vacuum pump 6, the vacuum pump 6 communicates with the inside of the housing 1 through the pipeline 4, the housing 1 is provided with an electric heater 3, and the housing 1 is also provided with an ion chromatograph flow joint 5, an ion chromatograph flow joint 5 Connected with the permeation tube 2, the shell 1 is provided with a thermistor RT, one end of the thermistor RT is connected to VCC through the first resistor R1, the other end of the thermistor RT is grounded through the sliding...

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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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Patent Type & Authority Patents(China)
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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