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Rapid formaldehyde detection method and device based on fuchsin-sodium sulfite reagent

A technology of red sodium sulfite and detection method, which is applied in the direction of material analysis, color/spectral property measurement, and chemical reaction of materials by observing the influence on chemical indicators, etc., can solve the problem that the detection results cannot be accurately judged, The quality of detection is uneven, and law enforcement and supervision are difficult to achieve the effect of accurate and rapid detection, simple operation, and easy access.

Pending Publication Date: 2019-11-12
UNIV OF ELECTRONICS SCI & TECH OF CHINA ZHONGSHAN INST
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  • Claims
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Problems solved by technology

[0004] With the development of society and the popularization of scientific knowledge, people have a certain understanding of the hazards of excessive indoor formaldehyde. If the human body has been living in an environment with high concentrations of formaldehyde, it will induce cancer and other diseases over time. The consequences are very serious. However, formaldehyde is colorless and odorless. Due to difficulties in law enforcement and supervision, the merchants who accept formaldehyde in the market have uneven testing quality. Ordinary people cannot accurately judge the test results. If we can explore an accurate, fast and easy-to-operate Moreover, the method of detecting formaldehyde with easy-to-obtain materials can allow formaldehyde detection to enter every family, so that every newly renovated family can prevent the hazards of formaldehyde in time, stay away from carcinogenic gases, and live in a new house with peace of mind.

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  • Rapid formaldehyde detection method and device based on fuchsin-sodium sulfite reagent
  • Rapid formaldehyde detection method and device based on fuchsin-sodium sulfite reagent

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[0038] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the specific embodiments and the accompanying drawings. It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concepts of the present invention.

[0039] The present invention proposes a formaldehyde rapid detection method based on magenta sodium sulfite reagent, comprising the following steps:

[0040] S1, prepare a formaldehyde standard solution, take a commercially available formaldehyde stock solution and dilute it with deionized water to obtain a formaldehyde standard solution with a concentration of 1.0 mg / ml;

[0041] S2, prepare a sodium sulfite solution, use an electronic ba...

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Abstract

A rapid formaldehyde detection method based on a fuchsin-sodium sulfite reagent comprises the following steps of preparing a formaldehyde standard solution; preparing a sodium sulfite solution; preparing a fuchsin solution; preparing the fuchsin-sodium sulfite reagent; taking a certain amount of the formaldehyde standard solution and using deionized water to dilute the solution to a certain concentration; taking 2.5ml of the fuchsin-sodium sulfite reagent prepared in the S4, and adding the same to the formaldehyde solution diluted in the S5; detecting the absorbance change of the solution in the S6 by using a visible spectrophotometer; and repeating the S5, S6 and S7. The invention also proposes a rapid formaldehyde detection device based on the fuchsin-sodium sulfite reagent, and the device comprises a detection box body, a detection box cover, a liquid container, a fan, a suction cup, a fixing rod, a connecting member and a pressing assembly. The invention produces an obvious color developing effect by the reaction of the fuchsin-sodium sulfite solution with the formaldehyde solution, is easy to obtain materials and simple to operate, and can accurately and quickly detect formaldehyde, thereby introducing formaldehyde detection to each family.

Description

technical field [0001] The invention relates to the technical field of formaldehyde detection, in particular to a method and device for rapid detection of formaldehyde based on a magenta sodium sulfite reagent. Background technique [0002] Formaldehyde is not only an important chemical material, but also exists in our living environment. Many criminals pursue interests excessively and cause harm to people. Formaldehyde is used for the preservation of Haifa food and grain to improve the taste and make consumers It has suffered a lot of damage in the ordinary, and humans use urea-formaldehyde resin and synthetic fibers on building materials, paints and adhesives made of formaldehyde, and incomplete combustion of organic substances (such as gasoline and diesel), A large amount of free formaldehyde is discharged. In addition, the combustion of cigarettes will also produce a small amount of formaldehyde, so we inevitably have to come into contact with formaldehyde. Studies have ...

Claims

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Application Information

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IPC IPC(8): G01N21/78G01N21/31
CPCG01N21/78G01N21/31Y02A50/20
Inventor 杨毅红
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA ZHONGSHAN INST
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