Formaldehyde, a colorless and pungent - smelling chemical, is widely used in the manufacturing of furniture due to its bonding properties in adhesives. However, excessive formaldehyde emissions from floor cabinets can pose significant health risks, including respiratory problems, allergic reactions, and potential carcinogenic effects. Therefore, accurate formaldehyde detection for environmentally - friendly floor cabinets is crucial to ensure indoor air quality and the well - being of users.

　　There are several common methods for detecting formaldehyde in floor cabinets. One of the most widely used techniques is the Spectrophotometry. This method involves collecting air samples from the enclosed space of the cabinet using adsorption tubes or sampling bags. The collected samples are then analyzed in a laboratory. Chemical reagents are added to the samples, and the formaldehyde in the air reacts with these reagents to form a colored compound. The absorbance of the colored compound is measured using a spectrophotometer, and based on the absorbance value, the concentration of formaldehyde can be calculated according to a pre - established calibration curve. This method offers high accuracy and is suitable for precise quantification of formaldehyde levels, but it requires professional laboratory equipment and trained personnel.

　　Another practical approach is the use of portable formaldehyde detectors. These devices utilize sensors, such as electrochemical sensors or semiconductor sensors, to directly measure the formaldehyde concentration in the air. Electrochemical sensors work by reacting formaldehyde with an electrode in the presence of an electrolyte, generating an electrical current proportional to the formaldehyde concentration. Semiconductor sensors, on the other hand, change their electrical resistance when exposed to formaldehyde. Portable detectors are convenient as they can provide real - time results on - site, allowing for quick inspections during the production process or after cabinet installation. However, their accuracy may be affected by factors such as temperature, humidity, and interference from other gases, so regular calibration is necessary.

　　In addition to detection methods, understanding the relevant standards is essential. In many countries, there are strict limits on formaldehyde emissions for furniture. For example, in China, the national standard for wood - based panels used in furniture sets different limits according to the type of product. Floor cabinets made from E1 - grade wood - based panels are required to have a formaldehyde emission limit of ≤0.124 mg/m³. When conducting formaldehyde detection on environmentally - friendly floor cabinets, it is necessary to ensure that the test results comply with these standards to guarantee the cabinet's environmental friendliness and safety.

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