Formaldehyde, for everyone, is a familiar carcinogenic decoration pollution gas. During the renovation process, many items will release formaldehyde. The floor is also one of the sources of formaldehyde release. When performing home formaldehyde inspection, how should the floor formaldehyde test be carried out? Let the house of purification be told.
Four ways to detect formaldehyde on the floor
1, spectrophotometric detection
This method is a qualitative and quantitative gap method based on molecular structure and based on the absorption of electromagnetic radiation by molecules of different structures. It is the current three main methods for detecting formaldehyde pollution. Modern spectrophotometry mainly includes acetylacetone method, phenol reagent method, AHMT method, magenta-sulfuric acid, chromotropic acid method, phloroglucin method, catalytic photometry, etc. Each method has its own focus, each has its own advantages and disadvantages. Sex.
2, electrochemical detection method
The electrochemical method is a method for quantitatively analyzing the concentration of an analyte from the change in current, electric quantity, and potential generated in a chemical reaction. The current electrochemical methods for detecting formaldehyde mainly include polarographic method and potential method.
3, chromatographic detection method
Chromatography is a method for detecting food, home and textiles. It is flexible and adaptable. It can be directly used for the analysis and detection of formaldehyde in living room, textiles and food. The formaldehyde in the sample can also be derivatized and then measured. However, the chromatographic operation process is cumbersome, and is generally used when large-scale detection of formaldehyde content.
4, sensor detection method
The sensors here mainly include electrochemical sensors, optical sensors and photobiosensors. Among them, the electrochemical sensor has a simple structure, low cost and short use time. Optical sensors are expensive, bulky, and more restrictive to use. But in general, the price of the sensor is much higher than other methods of detecting the content of formaldehyde. It is difficult to have their market in the market.
In fact, it is difficult to carry out formaldehyde detection on the floor alone. Therefore, it is very important for everyone to pay attention to whether they meet environmental protection standards when purchasing the floor. At present, the floor decoration of home decoration is generally divided into three types: solid wood floor, composite floor and solid wood composite floor. Among them, the solid wood floor has a small formaldehyde hazard, but it also has the problems of high price, complicated installation process and troublesome maintenance and use. Composite flooring and solid wood composite flooring require relatively high formaldehyde content due to the need for glue during the manufacturing and installation process. Many years ago, the state issued a standard for the determination of harmful substances in wood-based panels. The environmental protection standards for floors are divided into E0 (formaldehyde emission ≤0.5mg/L), E1 (formaldehyde emission ≤1.5mg/L), E2 (formaldehyde emission ≤5.0mg/L), E0 is the European national environmental protection standard, E1 is The national mandatory standards, the former is higher than the latter, but in recent years, some domestic enterprises have begun to use the E0 standard in some products. The doctor pointed out that as long as it meets the national standards and pays attention to the points during the installation process, it will not cause harm.
The above introduces several kinds of formaldehyde detection methods for the floor. I hope that after the introduction of the purification house today, everyone can have a certain understanding of the floor formaldehyde inspection. However, the specialized formaldehyde testing companies on the market are mixed, and everyone must pay more attention when choosing.
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