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| Tiancheng Lighting Detailed Explanation of UV Family: UVA/UVB/UVC/UVD |
| Time:2022-10-08 00:00:00 | view： |
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Tiancheng Lighting Detailed Explanation of UV Family: UVA/UVB/UVC/UVD Today I will take you to understand the detailed data of ultraviolet light, including the common sense of ultraviolet light to human hazards, and use the specific data of ultraviolet light disinfection and sterilization. The outer rays are divided into four bands according to the wavelength: long wave UVA, mid -wave UVB, short wave UVC, vacuum wave UVD. The longer the wavelength, the stronger the penetration ability. UVA: Long wave UVA, the wavelength is aged 320 to 400 nanometers, also known as long -wave -to -black spot effect ultraviolet rays. It has a strong penetrating power, can penetrate glass, or even 9 feet of water; and all year round, whether it is sunny or over night. Excisible damage to the human body: More than 95%of the ultraviolet rays in daily skin are UVA, so it hurts the skin the most. UVA can attack the dermis layer through the epidermis, so that the collagen and elastic protein in the skin are severely damaged; and the dermal cells have poor self -protection ability, and a small amount of UVA can cause great harm. Over time, the skin has problems such as looseness, wrinkles, and microvascular emergence. At the same time, it can activate tyrosine, which causes instant melanin to deposition and new melanin formation, making the skin blackened and lacking gloss. UVA can cause long -term, chronic and lasting damage, making the skin prematurely aging, so it is also called aging ray. Application field: 360nm wavelength UVA ultraviolet rays conform to the optical response curve of insects, which can make insect lamps. UVA UVA, 300-420nm wavelength, can only radiate near-ultraviolet light centered on 365nm through the special coloring glass lamp tube with a completely visible light, which can be used for ore appraisal, stage decoration, banknote inspection and other places.UVB: Middle wave UVB, the wavelength is aged 275-320 nanometer, also known as the mid -wave erythema effect ultraviolet rays. In the middle penetration, the short wavelength part will be absorbed by transparent glass. Most of the medium -wave ultraviolet rays contained in the sunlight are absorbed by the ozone layer. Only less than 2%can reach the surface of the earth. It will be particularly strong in summer and afternoon. Damage to the human body: It will oxidize the lipid layer of the protective effect of the epidermis and dry the skin; further the nucleic acid and protein in the epidermal cell degenerate, which will cause acute dermatitis (that is, sunburn). Turning red and painful. In severe cases, such as long -term exposure, it is also easy to cause skin cancer. In addition, the long -term damage of UVB can also cause melanocytes, causing solar spots that are difficult to eliminate. Application field: Ultraviolet health lights and plant growth lights are made by using special purple glass (light below 254nm) and fluorescent powder near 300nm. UVC: Short wave UVC, the wavelength is aged 200 to 300 nanometers, also known as short -wave sterilization ultraviolet rays. Its penetration ability is the weakest and cannot penetrate most of transparent glass and plastic. The short -wave ultraviolet rays contained in the sunlight are almost completely absorbed by the ozone layer, and it is absorbed by the ozone layer before reaching the ground. Damage to the human body: UVC in nature was absorbed by the ozone layer because it did not reach the ground. The impact on the skin could be ignored, but in fact, the damage of short -wave ultraviolet rays to the human body was very large, and the human body could not be directly illuminated. If it is directly illuminated, the skin can be burned in a short time. Long -term or high -intensity irradiation can also cause skin cancer. Application field: UV sterilization lamps emit UVC short -wave ultraviolet rays.短波紫外线被广泛应用于医院，空调系统，消毒柜，水处理设备，饮水机，污水处理厂，游泳池，食品饮料加工及包装设备，食品厂，化妆品厂，奶制品厂，酿酒厂，饮料厂， Bread rooms and refrigerated rooms and other fields. UV advantage: 1) disinfection and sterilization; 2) promoting bone development; 3) beneficial to blood color; 4) occasional treatment of certain skin diseases; 5) to promote mineral metabolism and vitamin D in the body and vitamin D Formation.UV disadvantage: 1) wrinkles that make the skin aging; 2) spots; 3) cause dermatitis; 4) cause skin cancer. In each wavelength ultraviolet rays, only short -wave UVCs have sterilization and disinfection effects, which are pure physical disinfection methods. They have the characteristics of high -efficiency, fast and thorough, and no need to add chemicals, no anti -drug, and secondary pollution. UVD ultraviolet rays with a wavelength of 185nm can turn the oxygen O2 in the air into ozone O3. Ozone has a strong oxidation effect and can effectively kill bacteria, but the wavelength of 185nm ultraviolet rays does not have sterilization and disinfection. The diffuseness of ozone can make up for the shortcomings of the ultraviolet rays that can only be transmitted in line and disinfection. It can reach any corner of the space with the air to make sterilization and disinfection more thorough.UV sterilization principle: through the irradiation of microorganisms such as bacteria, viruses such as ultraviolet rays, destroying the molecular structure of DNA (deoxyrum phytic acid) or RNA (ribosaccharotic acid) in microorganisms cells, causing DNA chain break, nucleic acid and protein cross -linking Fragmentation, causing growth of growth cells and regenerative cells to achieve the effect of sterilization and disinfection. Among them, UV sterilization disinfection effects with wavelength 275-280nm are the best. Ozone sterilization principle: UVD UVD ultraviolet radiation air with a wavelength of 185nm can break down oxygen O2 molecules in the air. The generated O atoms are combined with O2 molecules to produce ozone O3. Ozone O3 has a strong oxidation effect, which can destroy the cell wall that breaks down bacteria, and penetrates the oxidation and decomposes in the cells to destroy the glucose oxidase, RNA), deoxyuraotosaccharotic acid (DNA), protein, lipids, polysaccharides polymerization polymerization polymerization polymerization Things, died of damage to the metabolism and reproduction of bacteria, and achieved the effect of sterilization and disinfection. UVC's sterilization characteristics: High -efficiency sterilization: The sterilization effect of ultraviolet rays on bacteria and viruses is generally completed within a few seconds, almost instantaneous, and sterilization and disinfection capacity is 600-3000 times larger than chlorine. Sterilization broad -spectrum: UV technology is the highest spectrum among all current disinfection technologies. It can kill almost all bacteria and viruses. Sterilizer is more thorough: Ultraviolet rays and ozone combination (UVC+O3) can exert a stronger and thorough sterilization disinfection power. Ultraviolet lines are exposed to air and the surface of the object to achieve strong sterilization and disinfection; ozone penetrates into all corners of the room with the air, completely killing indoor bacteria. Complete environmental protection: UV lights are emitted by ultraviolet lights for sterilization and disinfection. Oxygen of oxygen in the air from ultraviolet rays to the air, ozone and oxidation and killing bacteria viruses. The entire sterilization process does not need to add any chemical agents, which truly achieves complete environmental protection. There is no anti -medication: UV or ozone is DNA, RNA, protein, etc. directly destroying the bacterial virus cells, causing cells to die directly without breeding and replication, and no anti -drug resistance. Other chemicals sterilize can cause anti -drug resistance to bacterial viruses, causing the sterilization effect of the chemical agent to fail. No secondary pollution: Ultraviolet rays and ozone cause bacterial viruses to die directly without any other chemical pollutants. At the same time, it is converted into oxygen at the same time at room temperature for 15-30 minutes (ozone half -life) without any residual secondary pollution. UVC's bactericidal efficiency: uvc UVA's sterilization efficiency of common bacterial virus (radiation intensity: 30000 μW/cm2)Diandao bacteria 1.5 seconds E. coli 0.4 seconds Black mold 0.3 ~ 6.7 seconds Smooming 0.9 to 3.0 seconds orchid green algae 10-40 seconds 4.0 ～ 6.7 seconds Infectious pancreatic necrosis 4.0 seconds As long as we fully understand, understand ultraviolet rays, and use the advantages of ultraviolet rays to avoid the shortcomings of ultraviolet rays, it can be better. Serving us humans and creating environmentally friendly and healthy homes for us and our family. |
