Formaldehyde Analyzer Developed

Ants, also known as aldehyde formaldehyde, chemical formula HCHO, is a colorless, has a strong stimulating gas-type smell. Formaldehyde is a gas at room temperature, but usually in the form of aqueous solution, 35 ~ 40% of formaldehyde in aqueous solution called formalin, can be impregnated biological specimens, its dilute solution (0.1-0.5%) can be used to seed agriculture to seed disinfection. Aldehyde molecules in formaldehyde polycondensation of Health, the phenolic resin, it is an important organic raw materials, mainly used in the plastics industry (such as the system of phenolic resin, urea-formaldehyde plastics), synthetic fibers (such as synthetic vinylon - polyvinyl alcohol -Formaldehyde), leather industry, medicine, dyes and so on. Formaldehyde is a protoplasmic poison that can combine with the protein, after the inhalation of high concentrations of formaldehyde, there will be serious respiratory incentives and edema, eye irritation, headache, asthma may also occur. Direct contact with the skin of formaldehyde can cause dermatitis, stain, such as necrosis. Regular inhalation of a small amount of formaldehyde, can cause chronic poisoning, there congestive mucosa, skin irritation disease, atopic dermatitis, keratosis and fragile nails, finger nail bed pain, long-term inhalation of pregnant women may result in abnormal newborn babies, or even death, the man of long-term inhalation can lead to men's sperm deformity, death, decreased sexual function, can lead to serious loss of reproductive capacity, general symptoms of headache, fatigue, poor appetite, palpitations, insomnia, and autonomic disorders, such as weight loss. Toxic chemicals in our list of priorities to control the second largest formaldehyde. Formaldehyde has been the World Health Organization (WHO) and the United States Food and Drug Administration (FDA) identified as cancer-causing substances and to deformities, is recognized as the source of the allergy, but also potentially one of Strong Mutagen.At present, a variety of man-made sheet (particleboard, fiberboard, plywood, etc.), the production of new furniture, walls, decorative laying in the ground with the use of adhesives, which contain formaldehyde. All of the local large-scale use of adhesives, there will always be the release of formaldehyde. In addition, some synthetic fiber carpet, paint coatings also contain a certain amount of formaldehyde. Formaldehyde is also found in cosmetics, detergents, pesticides, disinfectants, preservatives, printing ink, paper, textile and chemical fiber and other light industrial products. These are things that we encounter in daily life, and even will come into direct contact with, so in public places and indoor formaldehyde monitoring is necessary.Although there are many methods of determination of formaldehyde,such as spectrophotometry,chromatography,fluorescence,chemiluminescence,electrochemical method,etc. Most of these methods must be used in the air sampler of formaldehyde in the air to absorb the fluid pumped,to bring them back to the laboratory for analysis. In that case,the experimental cycle is longer,not suitable for the rapid detection of public places. Electrochemical only able to do fast and accurate detection of formaldehyde.Currently,sales in the market a variety of formaldehyde analyzer most of the principle of the use of electrochemical sensors,but the quality varies. Some imported equipment, such as the United States of formaldehyde analyzer INTERSCAN4160, Japan's new XP-308II-based universe of formaldehyde gas detector, the United KingdomÎœMOL/MOL formaldehydeÎœMOL/MOL400 high-tech companies import equipment detector performance, such as stability, accuracy is also good, but it is expensive, high maintenance costs. Some China-made equipment in a stable line and accuracy can not be compared with the imported equipment, but its price is relatively cheap, relatively low maintenance costs. Therefore, we developed an urgent need to design a more stable performance, easier operation, higher accuracy analysis of formaldehyde in order to resolve at this stage the status of backward technology, and in order to achieve the objective of the domestic advanced level.