Chromatographic detection device and method

A chromatographic detection and detection device technology, which is applied in the field of multi-mode detection devices, can solve the problems of PID detector ultraviolet lamp window pollution, reduce the sensitivity of PID detectors, and fix the use mode of serial detectors, etc., to achieve high reliability and dead volume Small, the effect of improving the service life

Inactive Publication Date: 2012-07-04
贵州聚科技术服务有限公司
View PDF11 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At the same time, in order to reduce the widening of the components separated by the chromatographic column in the pipeline, the makeup gas is usually placed at the front of the PID, but this simple physical series connection reduces the sensitivity of the PID detector
[0006] 2) When testing high-concentration samples, the PID detector is easily saturated, and it is easy to cause contamination of the UV lamp window of t

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Chromatographic detection device and method
  • Chromatographic detection device and method
  • Chromatographic detection device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0043] see Figure 2 ~ Figure 4 , a chromatographic detection device, comprising a chromatographic column 1, a detection unit, a switching unit 3 and a control unit 4;

[0044] The detection unit includes at least two detection modules. In this embodiment, the detection unit includes a first detection module 201 and a second detection module 202 .

[0045] The first detection module 201 is a mass-type detection module, including a mass-type detector, a hydrogen flow path, an air flow path, and a makeup flow path, etc., and the detector used may be: a hydrogen flame ionization detector or a nitrogen-phosphorus detector Or flame photometric detector, the detector in the first detection module that adopts in the present embodiment is hydrogen flame ionization detector, i.e. FID detector; Air and hydrogen are connected on the FID detector through flow control module respectively, and pass through The flow control module stabilizes its own flow at a certain target value. The make...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a chromatographic detection device, which comprises a chromatographic column, a detection unit, a switching unit and a control unit, wherein the chromatographic column is connected with the detection unit through the switching unit; the detection unit comprises at least two detection modules; the switching unit is used for selectively communicating the chromatographic column with one of the at least two detection modules by adjusting pressure; the control unit is connected with the switching unit and switching gas respectively; and the control unit is used for controlling the switching unit to further control direction of driving a sample by the switching gas, so that the sample which gets out of the chromatographic column is driven by the switching gas to enter the detection module communicated with the chromatographic column. The invention also provides a chromatographic detection method. The device and the method have the advantages of more detection modes, convenience and fastness in switching, small dead volume, long life of the detector and the like.

Description

technical field [0001] The invention relates to a detection device and method, in particular to a multi-mode detection device and method applied in the field of chromatography. Background technique [0002] Mass detectors and concentration detectors are two types of detectors commonly used in gas chromatographic analysis instruments. Especially in the field of complex sample detection, it has great advantages to use them in series. Partially selective concentration-type detectors (such as photoionization detectors (PID), electron capture detectors, etc.) have high sensitivity, but have little response to saturated alkanes, while hydrogen flame ionization detectors in mass-type detectors (FID) responds to all organics, but is less sensitive than selective concentration-type detectors. At present, in order to solve the detection of multi-component trace-level samples in complex matrices, a high-sensitivity concentration detector and a mass detector are usually used in series ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01N30/88
Inventor 李天麟刘伟宁肖旷王琳琳刘立鹏
Owner 贵州聚科技术服务有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap