Formaldehyde detection device and method

A detection device and formaldehyde technology, applied in measuring devices, instruments, and material analysis through optical means, can solve the problems of time-consuming and high cost, and achieve the effect of cheap raw materials, easy-to-obtain raw materials, and simple and clear detection methods

Pending Publication Date: 2017-11-07
GUANGDONG EDA MEDICAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method requires professionals and professional equipment for analysis and testing, and it takes a long time and costs a lot, so it is not suitable for ordinary people's families.

Method used

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  • Formaldehyde detection device and method
  • Formaldehyde detection device and method

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preparation example Construction

[0032] In one of the embodiments, the preparation method of aminated graphene oxide and potassium periodate composite material comprises the following steps:

[0033] Add graphite oxide and potassium periodate to deionized water at 80-100°C, mix them, and then ultrasonically disperse to obtain a graphene oxide-potassium periodate suspension, then add ammonia water with a mass concentration of 30%, and place it on ice Stir and cool in the bath, wherein, the graphite oxide: the mass ratio of potassium periodate is 100:6~20, and the solid-to-liquid ratio of the graphite oxide and the ammoniacal liquor is 1g:30ml;

[0034] The above-mentioned composite material mixture is filtered, and the obtained aminated graphene oxide and potassium periodate slurry is coated on the substrate through a coater, and then the coated film is basically placed in a vacuum drying oven for drying, that is, Obtain the test piece, seal it and save it for later use;

[0035] In one of the embodiments, th...

Embodiment 1

[0050] The formaldehyde detection device is used to detect whether the concentration of formaldehyde exceeds the standard. The formaldehyde detection device includes a standard container and a detection piece.

[0051] The volume of the standard container is 20L, including the bottom box and the lid.

[0052] The bottom box has a sealing groove, and the cover has a sealing strip used in conjunction with the sealing groove.

[0053] The material of the sealing strip is silica gel.

[0054] The cover has a socket for placing the detection piece.

[0055] The detection sheet is coated with aminated graphene oxide and potassium periodate composite material on the substrate, wherein the size of the substrate is 20mm*10mm*2mm, and the mass ratio of aminated graphene oxide to potassium periodate is 100: 10. Coating thickness is 20 μm. The coating method adopts transfer coating.

[0056] The preparation method of aminated graphene oxide and potassium periodate composite material c...

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PUM

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Abstract

The invention relates to a formaldehyde detection device. The formaldehyde detection device is used for detecting whether the concentration of formaldehyde exceeds the standard and comprises a stander container and a detection piece, wherein the standard container comprises a bottom box and a cover; the bottom box is provided with a sealing slot, and the cover is provided with a sealing strip matched with the sealing slot in use; the sealing strip is prepared from one of silica gel and rubber; the cover has an insertion hole, and the insertion hole is used for placing the detection piece; and the detection piece is a composite material prepared by coating a substrate with aminated graphene oxide and potassium periodate. The invention further provides a detection method. The detection device is simple in production and low in production cost, and the raw materials are easily available. The detection method is simple and clear, and a detection result is accurate.

Description

technical field [0001] The invention relates to a gas detection device and a detection method, in particular to a formaldehyde detection device and a detection method. Background technique [0002] Formaldehyde was determined as a Class 1 carcinogen in 2006, and human beings have long-term exposure to inhalation of 12mg / m 3 Can cause drowsiness, weakness, headache, finger tremor, vision loss; people inhale 20~70mg / m for a long time 3 May cause loss of appetite, weight loss, weakness, headache, insomnia. The formaldehyde content of residential buildings should be lower than 0.12mg / m 3 , so it is very meaningful to monitor the formaldehyde content in the environment. [0003] The air sampling method is often used to test the formaldehyde concentration in the air of indoor environments and workplaces, that is, to use a sampling pump to draw a certain volume of air samples through a formaldehyde absorption bottle, and then use chemical colorimetry for analysis. This method r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78
CPCG01N21/783
Inventor 周炳明刘睿
Owner GUANGDONG EDA MEDICAL TECH CO LTD
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