Gas detection method and special sensor array thereof

Abstract

The invention discloses a gas detection method and a special sensor array thereof. The gas sensor array comprises a plasma generator and a sensor array chip, wherein one end of the plasma generator is connected with a three-way pipe; the other two ways of the three-way pipe are used as a sample gas inlet and a carrier gas inlet respectively; the other end of the plasma generator is used for introducing gas to the surface of the sensor array chip through a gas pipeline; the sensor array chip is composed of a temperature controllable inert chip, and an array composed of a plurality of sensing units and arranged on the surface of the inert chip; and different nano catalytic materials are loaded on each sensing unit. The gas sensor array combines high-activation performances of low-temperature plasmas, and the reaction activities of the catalytic materials and reactants are improved; the device is simple, the catalytic temperature is low, the energy consumption is low and the heat background is low; and the gas sensor array can be used for detecting environmental gas-state pollutants and respiratory air leaving away from a human body, and a simple and rapid novel method is provided for rapid diagnosis and early detection of diseases including cancers and the like.

Description

technical field

[0001] The invention relates to a gas detection method and a special sensor array thereof, belonging to the field of spectrum analysis. Background technique

[0002] Cancer detection has always been an important topic in bioclinical testing. There are many detection methods at present, but they have certain limitations. For example, B-ultrasound is economical and safe, but its scope of application is small; although CT and MRI can clearly find the lesion site, the inspection costs are expensive and there will be varying degrees of damage. Tissue radiation damage. In addition, biopsy is also a commonly used detection method. Excision biopsy or needle biopsy is performed with the help of CT or B-ultrasound results. After sampling, the sample is pretreated, then electrophoresis separation, chromatography-mass spectrometry detection, and finally the results are obtained by comparison. . The accuracy of this type of method is still affected by sampling, sample ...

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