Ion chromatography detector combining conductivity detection and optical detection

By combining conductivity detection with optical detection and employing a quartz lens and electrode plate design, the problem of insufficient versatility and sensitivity of existing ion chromatography detectors is solved, enabling synchronous detection within the same flow path and improving detection accuracy and efficiency.

CN121703343APending Publication Date: 2026-03-20SICHUAN EVERGREEN PINE TECH CO LTD
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Patent Information

Application Number
CN202610211887.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-02-13
Publication Date
2026-03-20

AI Technical Summary

Technical Problem

Existing ion chromatography detectors have shortcomings in terms of versatility and sensitivity. Conductivity detectors have poor selectivity and are easily affected by matrix interference. Ampere detectors are only applicable to electroactive substances and their electrodes are easily contaminated. Optical detectors have low versatility and can only be used for substances with chromophores.

Method used

By combining electrical conductivity detection with optical detection, a single flow path is used to achieve both electrical conductivity and optical detection through a quartz lens and electrode plate. The detection base is made of heated aluminum alloy and isothermal control is used to ensure consistent detection conditions.

Benefits of technology

It enables simultaneous conductivity and optical detection within the same flow path, reducing interference and improving detection sensitivity and reproducibility. It also features a compact structure and small size.

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Abstract

The invention is applicable to the field of ion chromatography detection, and provides an electric conductivity detection and optical detection combined ion chromatography detector, which comprises a detection base, grooves are formed in the upper end and the lower end of the base, and electrode plates are installed in the grooves. Wherein a flow path is arranged in the middle of the detection base, the flow path is in a linear form in the detection base and penetrates through the detection base, and a liquid inlet connector and a liquid outlet connector which are communicated with the flow path are formed in the detection base; quartz lenses corresponding to the two ends of the flow path respectively are mounted on the detection base; a lamp panel fixing seat and a PD light source receiving plate are respectively mounted on two side surfaces, corresponding to the two groups of quartz lenses, of the detection base; through holes corresponding to the flow paths are formed in the lamp panel fixing seat and the PD fixing seat; lamp panels corresponding to the through holes in position are mounted on the lamp panel fixing seat; and a PD light source receiving plate corresponding to the position of the through hole is mounted on the PD fixing seat. Therefore, the device can carry out conductivity detection and optical detection at the same time; and the structure is compact and the size is small.
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