Online volatile organic compound detector and method

A technology of volatile organic compounds and detectors, which is applied in the direction of instruments, measuring devices, scientific instruments, etc., and can solve the problems of low reliability

Inactive Publication Date: 2019-10-08
GUANGZHOU HEXIN INSTR CO LTD
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  • Abstract
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  • Application Information

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[0004] Based on this, it is necessary to provide an online volatile organic compound detector and method with high detec

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  • Online volatile organic compound detector and method
  • Online volatile organic compound detector and method
  • Online volatile organic compound detector and method

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Embodiment Construction

[0023] In one embodiment, a volatile organic compound online detector, such as figure 1 As shown, it includes an online pre-concentration system 110, a comprehensive two-dimensional gas chromatography device 120 and a controller 130. The online pre-concentration system 110 is connected to the comprehensive two-dimensional gas chromatography device 120, and the controller 130 is connected to the online pre-concentration system 110 and the comprehensive two-dimensional gas chromatography device 120. The gas chromatography device 120, the controller 130 is used to control the start of the online pre-concentration system 110; when the completion signal fed back by the online pre-concentration system 110 is received, the two-dimensional gas chromatography device 120 is controlled to start; the online pre-concentration system 110 is used to start The control of the controller 130 captures, concentrates and heats and analyzes the sample gas to be tested according to preset conditions to...

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Abstract

The invention relates to an online volatile organic compound detector and method. The online volatile organic compound detector comprises an online preconcentration system, a full two-dimensional gaschromatography device and a controller, wherein the online preconcentration system is connected with the full two-dimensional gas chromatography device, and the two are both connected with the controller; the controller controls the online preconcentration system to capture a to-be-detected sample gas in an online mode, performs corresponding preconcentration and heating analysis processing and send the gas to the full two-dimensional gas chromatography device, completion signals are sent to the controller, and the controller controls the full two-dimensional gas chromatography device to startaccording to the completion signals; and the full two-dimensional gas chromatography device separates the to-be-detected sample gas after detection processing according to preset separation detectionand analysis conditions, and a mass chromatogram is obtained. The full two-dimensional gas chromatography device has the characteristics of high resolution, high sensitivity, fast response, and the like. The obtained mass chromatogram has high reliability. Quantitative and qualitative analysis are carried out according to the mass chromatogram and a preset standard mass chromatogram, and the components of a complex volatile organic compound can be analyzed highly reliably.

Description

Technical field [0001] The invention relates to the technical field of environmental detection, in particular to an online volatile organic compound detector and method. Background technique [0002] Volatile organic compounds (VOCs) are commonly found in the atmosphere and other environments. They are the key precursors for generating tropospheric ozone and secondary organic aerosols, which can cause atmospheric photochemical smog and cause harm to the human body. VOCs have become one of the important environmental factors affecting environmental quality and human health. Studying the concentration composition and pollution level of VOCs, and identifying the key components that affect urban air quality, has important research significance in the environmental field. The composition of VOCs in the environment is complex and the concentration is low, and it is difficult for conventional detection methods to achieve direct and effective measurement. [0003] The traditional detecti...

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Application Information

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IPC IPC(8): G01N30/02G01N30/46G01N30/72G01N30/06G01N30/08
CPCG01N30/02G01N30/06G01N30/08G01N30/463G01N30/72
Inventor 吴曼曼岑延相黄豆陈家新王甫华
Owner GUANGZHOU HEXIN INSTR CO LTD
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