Ion chromatograph for dual-channel offline and online analysis based on multi-valve switching and detection method thereof

Abstract

The invention discloses an ion chromatograph for dual-channel offline and online analysis based on multi-valve switching and a detection method thereof. The ion chromatograph comprises an automatic sampler, two chromatography pumps, a plurality of six-way valves, an online purifying column, an enriching column, two chromatograph columns, an ultraviolet detector, a suppressor and a conductive detector. The dual-channel online switching of offline ion chromatography analysis and online ion chromatography analysis can be realized on one ion chromatograph, the online switching for analyzing channel can be realized according to the property of a to-be-analyzed sample and offline or online separating analysis for the materials in different properties on different chromatographic columns can be realized, so that the defect that the traditional ion chromatograph can only perform offline analysis or online purification can be overcome, the applicability and the use efficiency of the instrument can be greatly increased and the use cost of the instrument can be lowered. An online purifying analyzing system can simplify a complex operation process, so that the preprocessing time of the sample is saved, the online purifying column can be subjected to activating regeneration treatment and can be reused, the ion chromatograph is more environment-friendly and the use cost can be reduced.

Description

technical field [0001] The invention relates to an ion chromatograph, in particular to a dual-channel 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 liquid chromatography method for analyzing ionic substances developed on the basis of modern high performance liquid chromatography and classical ion exchange chromatography. Since its establishment in 1975, it has developed rapidly and has become an important separation analysis method. Its analysis range is also extended from the early inorganic anions and cations to various types of ionic substances such as organic acids, amines, sugars, amino acids, etc. 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 f...

AI Technical Summary

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

It is necessary to switch between the two system states frequently, 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 it

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