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Ion chromatograph based on multi-valve switching and for offline and online analysis and detection method of ion chromatograph

An ion chromatograph and valve switching technology, applied in the field of ion chromatograph, can solve the problems of unfavorable instrument life, cumbersome operation, large inspection amount, etc., and achieve the effects of reducing use cost, saving time, and reducing analysis cost.

Pending Publication Date: 2017-05-10
ANIMAL & PLANT & FOOD INSPECTION CENT OF TIANJIN ENTRY EXIT INSPECTION & QUARANTINE BUREAU +1
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  • Description
  • Claims
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Problems solved by technology

In the face of a large amount of sample inspection and a large number of sample types, it is difficult to deal with it
Often switch between the two system states, the operation is very cumbersome, and it is not good for the life of the instrument, and the disassembly system is very professional, and untrained personnel cannot operate

Method used

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  • Ion chromatograph based on multi-valve switching and for offline and online analysis and detection method of ion chromatograph
  • Ion chromatograph based on multi-valve switching and for offline and online analysis and detection method of ion chromatograph
  • Ion chromatograph based on multi-valve switching and for offline and online analysis and detection method of ion chromatograph

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Embodiment Construction

[0029] The technical scheme of the present invention will be described in further detail below in conjunction with accompanying drawing and specific embodiment:

[0030] Such as figure 1 , 2 As shown, the ion chromatograph based on the off-line and on-line analysis of multi-valve switching of the present invention includes: an autosampler 1, two chromatographic pumps 5, 14, a plurality of six-way valves, an online purification column 17, and an enrichment column 18. Chromatographic separation column 8, ultraviolet detector 9, suppressor 10, conductivity detector 11, autosampler 1 is connected with system switching three-way valve 2, system switching three-way valve 2 is connected with first six-way valve 3 and The second six-way valve 15 is connected;

[0031] The first six-way valve 3 is connected with the first chromatographic pump 5 and the first quantitative loop 6, and is connected with the third six-way valve 7, the first chromatographic pump 5 is connected with the fi...

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Abstract

The invention discloses an ion chromatograph based on multi-valve switching and for offline and online analysis and a detection method of the ion chromatograph. The ion chromatograph comprises an automatic sample feeder, two chromatographic pumps, multiple six-way valves, an online purifying column, an enriching column, a chromatographic separation column, an ultraviolet detector, an inhibitor and an electrical conductance detector. Online switching of offline ion chromatographic analysis and online purifying ion chromatographic analysis can be realized on one ion chromatograph, the problem that conventional ion chromatographs can only conduct offline ion chromatographic analysis or online purifying ion chromatographic analysis is solved, and online switching of analysis systems can be realized according to properties of to-be-analyzed samples, so that convenience and using efficiency of the ion chromatograph are improved greatly, and using cost of the ion chromatograph is lowered. In addition, an online purifying analysis system saves sample pretreatment time and complex operation process; compared with disposable using characteristics of conventional purifying columns, the online purifying column is more environment-friendly through activation and regeneration treatment and recycling, and analysis cost is greatly lowered.

Description

technical field [0001] The invention relates to an ion chromatograph, in particular to an ion chromatograph capable of completing off-line analysis and on-line analysis based on multi-valve switching technology and a detection method thereof. Background technique [0002] Ion chromatography (IC) is a type of high performance liquid chromatography and is a liquid chromatography method for analyzing ions. In 1975, Small and others succeeded in continuously detecting the column effluent with a conductivity detector, marking the birth of ion chromatography. my country began to introduce ion chromatography instruments from the 1980s. After nearly forty years of development, ion chromatography has become a common method for analyzing ionic substances. Ion chromatography is widely used in chemical industry, electronics, environment and other fields. With the development of technology and the updating of standards, the application of ion chromatography in the field of food testing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/96
CPCG01N30/02G01N30/96
Inventor 章骅王利强张文斌刘旸宋文华
Owner ANIMAL & PLANT & FOOD INSPECTION CENT OF TIANJIN ENTRY EXIT INSPECTION & QUARANTINE BUREAU
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