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

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 ...

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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

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