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Flow-type gas sensor array and preparation method thereof

A gas-sensing, flow-type technology, applied in fluorescence/phosphorescence, analyzing materials by chemical reactions, and analyzing materials by observing the impact on chemical indicators, etc., can solve the problem of large volume of gas samples and slow response speed , poor sensitivity and repeatability, etc., to achieve high sensitivity, full contact, and low detection limit

Inactive Publication Date: 2010-06-30
SOUTHEAST UNIV
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Problems solved by technology

[0006] The purpose of the present invention is to provide a flow-type gas sensing array, which solves the problem that the gas sensing array in the prior art is greatly affected by the ambient humidity, the volume of the gas sample required for detection is large, the response speed is slow, and the sensitivity and repeatability are poor. question

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  • Flow-type gas sensor array and preparation method thereof
  • Flow-type gas sensor array and preparation method thereof

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Embodiment Construction

[0033] The above solution will be further described below in conjunction with specific embodiments. It should be understood that these examples are used to illustrate the present invention and not to limit the scope of the present invention. The implementation conditions used in the examples can be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not indicated are usually the conditions in routine experiments.

[0034] Embodiment flow type gas sensor array and its preparation

[0035] like figure 1 It is a schematic diagram of a flow-type gas sensor array, including a fluorescence detection unit and 6 gas-sensing units. The gas-sensing unit includes a flow carrier of three-dimensional colloidal crystal microspheres, and porphyrin, phthalocyanine molecules or hydrophobic molecules are fixed on the flow carrier. PH indicator; the combination of 6 gas sensing units constitutes a fluid gas sensing array. Flow carrier—the ...

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Abstract

The invention discloses a flow-type gas sensor array and a preparation method thereof. The array comprises a plurality of gas-sensitive units, wherein each gas-sensitive unit comprises a flow carrier of three-dimensional colloid crystal microspheres; and porphyrin, phthalocyanine molecules or a hydrophobic PH indicator is fixed on the flow carrier. The array effectively solves the problems of low detection speed, large size of the required sample, and the like in the prior fixed-type sensor array, has the characteristics of stable performance, convenient detection, low detection limit and the like, and is free from the effect of ambient humidity.

Description

technical field [0001] The invention belongs to the technical field of gas detection, and in particular relates to a flow type gas sensing array and a preparation method thereof. Background technique [0002] Fast and accurate gas detection and analysis is of great significance in the fields of environmental protection, chemical control, household alarm, food preservation, aerospace and public security and customs. The gas sensor is the core of the gas detection system and is usually installed in the detection head. In essence, a gas sensor is a converter that converts a certain gas volume fraction into a corresponding electrical signal. The probe head conditions the gas sample through the gas sensor, which usually includes filtering out impurities and interfering gases, drying or refrigeration treatment, sample suction, and even chemical treatment of the sample for faster measurement by the chemical sensor. [0003] Combining multiple gas sensors together forms a gas sens...

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Application Information

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IPC IPC(8): G01N21/64G01N21/78
Inventor 徐华顾忠泽张茂春戎非
Owner SOUTHEAST UNIV
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