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Electron capture detector, detection cell, cleaning method, analysis method and analytical device

A technology of electron capture and detection unit, which is applied in the direction of measuring devices, cleaning methods and appliances, chemical instruments and methods, etc., can solve the problems of data accuracy reduction and achieve the effect of reducing noise

Inactive Publication Date: 2019-02-01
SHIMADZU SEISAKUSHO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the use of electron capture detectors, there is a problem that the accuracy of acquired data is reduced due to the generation of noise due to variations in the detection unit.

Method used

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  • Electron capture detector, detection cell, cleaning method, analysis method and analytical device
  • Electron capture detector, detection cell, cleaning method, analysis method and analytical device
  • Electron capture detector, detection cell, cleaning method, analysis method and analytical device

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Embodiment Construction

[0030] Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. In the cleaning method of the detection unit of the electron capture detector according to this embodiment, the noise of the electron capture detector is reduced by introducing a cleaning gas into the detection unit of the electron capture detector.

[0031] figure 1 It is a diagram showing a schematic configuration of an analysis device 1 showing a cleaning method of a detection unit of an electron capture detector according to the present embodiment. The analysis device 1 is a gas chromatograph, and includes a separation unit 10 and an electron capture detector 100a. The separation unit 10 includes a sample introduction unit 11 , a sample vaporization unit 12 , a carrier gas introduction port 13 , and a separation column 14 . The electron capture detector 100 a includes a detection unit 20 a , an electrical signal conversion unit 30 , a control unit 40 ...

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Abstract

The invention provides an electron capture detector, a detection cell, a cleaning method, an analysis method and an analytical device, capable of reducing the noise caused by the detection cell. The cleaning method of the detection unit of the electron capture detector includes a step of introducing a cleaning gas to a detection unit of the electron capture detector, wherein the detection unit ofthe electron capture detector includes a line source, a sample gas introduction port, and a collector, and the line source is used for ray radiation, the sample gas introduction port is used to introduce the sample gas.

Description

technical field [0001] The present invention relates to a cleaning method of a detection unit of an electron capture detector, an analysis method, a detection unit of an electron capture detector, an electron capture detector and an analysis device. Background technique [0002] In gas chromatography, an electron capture detector (Electron Capture Detector: ECD) is used to detect a compound with high electron affinity containing an atom having a high electronegativity such as a halogen. In the use of electron capture detectors, there is a problem that the accuracy of acquired data is reduced due to the generation of noise due to variations in detection cells. [0003] Examples of changes in the detection unit that cause noise generation include contamination of the collector with sample gas, oxidation inside the detection unit, and the like. Patent Document 1 describes an electron capture detector in which a collector electrode is mounted at a position deviated from the axi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/70
CPCG01N30/70G01N27/66G01N30/64G01N2030/626G01N2030/642G01N30/26G01N2030/025B08B5/00G01N30/62
Inventor 内山新士
Owner SHIMADZU SEISAKUSHO CO LTD