Formaldehyde detecting material, formaldehyde detector, formaldehyde detecting method and formaldehyde detecting reagent

A detection reagent and detection device technology, applied in the field of formaldehyde detection reagents, can solve the problems of complicated operation, impracticality, poor practicability, etc., and achieve the effect of shortening the reaction time and ensuring discoloration

Inactive Publication Date: 2009-09-16
NAT INST OF ADVANCED IND SCI & TECH +1
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Problems solved by technology

[0007] However, the advantage of the former method using chromatography is that it has good sensitivity and selectivity, and the disadvantage is that the operation is complicated.
Although the latter method using the detection tube is simple, the

Method used

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  • Formaldehyde detecting material, formaldehyde detector, formaldehyde detecting method and formaldehyde detecting reagent
  • Formaldehyde detecting material, formaldehyde detector, formaldehyde detecting method and formaldehyde detecting reagent
  • Formaldehyde detecting material, formaldehyde detector, formaldehyde detecting method and formaldehyde detecting reagent

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Embodiment —

[0138] Next, examples of the detection element 30 will be described.

[0139] (1) Manufacture of mesoporous silica film (mesoporous layer), introducing 2-acetyl-3-ethyl dimethacrylate into the pores of mesoporous silica film (mesoporous layer)

First, as an example of a method for producing a mesoporous silica thin film, a mesoporous silica thin film is formed on a glass substrate. The production method employed is the method described in Non-Patent Document 2 and Non-Patent Document 3.

[0140] Specifically, 1-propanol, dilute hydrochloric acid, and 2-butanol were added to tetraethyl orthosilicate and stirred, and an aqueous solution of cetyltrimethylammonium chloride (C16TMA) was added thereto and Stir, then, drop a few drops of the obtained solution onto the glass substrate, and then use the spin coating technique to make a thin film. Next, the resultant was calcined in an electric furnace at a temperature of 400° C. in the atmosphere. The structure in the thin film was ...

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Abstract

A formaldehyde detector (10) provided with a detecting reagent which develops a color in response to formaldehyde. The detector (10) comprises a detection element (30) having a base material (31) which constitutes an optical waveguide transmitting light via repeated total reflection and a mesoporous layer (32) which serves as the surface of the base material (31), is formed by laminating on at least a part of the light reflecting face and carries the detecting reagent as described above. Furthermore, it has a light emitting material which emits an incident light on the base material (31) and a light receiving material which receives the light outgoing from the base material (31). Furthermore, it has a signal processing section wherein the light signal from the light receiving material is received and a change in the optical properties based on the color development due to the reaction of formaldehyde with the detecting reagent is detected to thereby detect formaldehyde and measure its concentration from the change in the optical properties.

Description

technical field [0001] The invention relates to a formaldehyde detection body, a formaldehyde detection device, a formaldehyde detection method and a formaldehyde detection reagent. In particular, it relates to a formaldehyde detection body, a formaldehyde detection device, a formaldehyde detection method and a formaldehyde detection reagent for detection by utilizing changes in optical characteristics. Background technique [0002] (A method of detection using optical properties) One of the methods to detect formaldehyde so far utilizes infrared light absorption. That is to say, the C=O bond pair wave number of ketones and aldehydes containing formaldehyde is 1765-1645cm -1 Shows strong infrared light absorption characteristics. Ketones and aldehydes can be detected by detecting the degree of absorption in this wavenumber region. [0003] However, when analyzing mixed gases of ketones and aldehydes, since the absorption in this wavenumber region by the C=O bond is comm...

Claims

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Application Information

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IPC IPC(8): G01N21/78G01N31/00G01N21/27G01N31/22G01N21/77
CPCG01N2021/7773G01N21/783G01N2021/7776G01N21/7703G01N31/22G01N2021/7783Y10T436/202499
Inventor 周豪慎渡边崇康伦明重森和久村山恭平
Owner NAT INST OF ADVANCED IND SCI & TECH
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