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Portable rapid detector with modularization composite structure for chemicals

A combined structure and portable technology, applied in scientific instruments, chemical method analysis, instruments, etc., can solve problems such as installation and disassembly are not very easy, performance indicators and practical applications are complicated, and achieve the effect of shortening the analysis time

Inactive Publication Date: 2009-02-04
张西咸
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, it is much more complicated than the former in terms of instrument design, performance indicators and practical applications.
However, under the complex environmental conditions of the field site, although the latter has considered the characteristics of the site complexity, it has not realized the rapid installation and removal of parts on site in a short time, such as: replacement of chromatographic columns, detectors and other components, installation and removal it's not easy

Method used

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  • Portable rapid detector with modularization composite structure for chemicals
  • Portable rapid detector with modularization composite structure for chemicals
  • Portable rapid detector with modularization composite structure for chemicals

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Embodiment 1

[0045] Such as figure 1 As shown, the present invention is a portable chemical rapid detector with a modular combination structure. The detector is an integrated modular combination structure, including a frame body 1, and a sampling module 2 and a gas path interface 3 are installed on the top surface of the frame body. and a detector module 4; a miniature integrated column separation module 5 is installed in the middle of the frame; a main control module 6 is installed at the bottom of the frame; a detection circuit module 7 and a power drive and event module 8 are installed on the main control module. The sample injection module and detector module are respectively connected to the micro-integrated column separation module, and the micro-integrated column separation module, detection circuit module and power drive and event module are respectively connected to the main control module, and the connection interfaces between the modules are international Standardized quick conn...

Embodiment 2

[0060] Embodiment 2 Analytical instruments and conditions

[0061] Gas chromatograph; chromatographic column: SE-30, 12m×0.2mm×0.25μm, column temperature: 40°C-90°C, heating rate 8°C / min. Detector: SnO 2 ;Temperature: 150°C. Column pressure: 40kPa; injection volume: 1μl, split ratio 1:10, injector temperature: 200°C; carrier gas: high-purity N 2 ; TVOC liquid standard sample.

[0062] The column temperature conditions are from the initial temperature of 40°C; the boiling point temperature value of the last component undecane detected by TVOC is used as the end point temperature of 90°C, and the undecane flows out of the chromatographic column at 85°C, which is 195.9°C higher than the boiling point of undecane decreased by about 100°C. Figure 8 is SnO 2 The TVOC chromatogram experiment spectrum of the detector.

[0063] The detection speed analysis is based on the current national TVOC detection standard, and the retention time of undecane is 30 minutes as the benchmark ...

Embodiment 3

[0072] Embodiment 3 Analytical instruments and conditions

[0073] Continuous on-site rapid detection of TVOC in air. Injection method: automatic continuous injection; chromatographic column: SE-30, 12m×0.2mm×0.25μm, column temperature: 40°C-90°C, heating rate 10°C / min. Detector: FID; temperature: 200°C. Column pressure: 0.1MPa; Injection volume: 1μl, standard sample (TVOC liquid standard sample) or continuous adsorption / thermal desorption (desorption temperature: 350°C); carrier gas: high-purity H 2 .

[0074] Such as Figure 9 is the FID detector TVOC chromatogram, Figure 10 It is the comparison spectrum between the standard TVOC sample and the FID detector in continuous adsorption / thermal desorption mode.

[0075] Benzene series (1. Benzene; 2. Toluene; 3. Butyl acetate; 4. Ethylbenzene; 5. p-xylene; 6. Styrene; 7. Ortho-xylene) analysis time: <150sec. The last component (8. Undecane) elutes for <270sec (4.5min).

[0076] Based on undecane, the measurement of a TVOC...

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Abstract

The present invention discloses a portable fast detector of chemicals, which has a modularized combined structure. The detector comprises a frame body; the frame body is provided with a sampling module, a gas interface, a detector module, a micro integrated column separation module, a main control module, a detection circuit module and a power drive and event module; the sampling module and the detector module are respectively connected with the micro integrated column separation module, the micro integrated column separation module, the detection circuit module and the power drive and event module are respectively connected with the main control module, and the connecting joints of all the modules are internationally standardized fast connecting joints. The invention provides a portable fast detector of chemicals, which has a novel modular structure and is designed according to the characteristics of emergency detection and fast analysis of the chemicals in the adverse environment and complex emergent events, has the characteristics of convenient movement (comprising portable, vehicle carrying, airplane carrying and ship carrying movements), low power, fast analysis and high efficiency, and has the characteristics of fast combination and integration, and so on.

Description

technical field [0001] The invention relates to a rapid chemical detector, in particular to a portable rapid chemical detector with a modular combination structure. Background technique [0002] The miniature portable gas chromatograph is a new type of micro-structure gas chromatograph designed to meet the harsh environment, emergency detection and rapid analysis of complex chemicals in emergencies, and special requirements such as movement. Through the rapid combination and integration of modules, special detectors for different application purposes and general-purpose gas chromatographs suitable for routine analysis can be formed. Especially for the emergency detection and rapid analysis of complex chemicals in emergencies, meeting the application requirements of food safety, environmental protection, petroleum, chemical industry, production safety, national defense (military), national security (anti-terrorism), on-site portable, vehicle-mounted and laboratories, etc. Fo...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/16G01N31/00
Inventor 张西咸陈莲
Owner 张西咸
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