Most people now know that LED is a new light source for energy saving and emission reduction. But there is one big advantage that is often overlooked. It is pollution-free and environmentally friendly.
We know that mercury is an extremely toxic substance. However, mercury is present in almost all currently used high-efficiency light sources. The mercury content of various electric light sources is shown in the following table:
26mm fluorescent lamp
Metal Halide Lamp
High pressure sodium lamp energy saving lamp (10mm) various LED
25-45mg
20-25mg
12-14mg
10-15mg0
Mercury has a very low boiling point and can evaporate at room temperature. After a broken discarded light source is broken, mercury vapor is immediately emitted to the surroundings, and the concentration of mercury in the ambient air can be instantaneously increased to 10-20 mg/m3, exceeding the national maximum allowable concentration of mercury in the air (0.01 mg/m3). m) 1000 to 2000 times. According to the study of mercury at Stanford University in the United States, 1 mg of mercury is enough to contaminate 5454.5 kg of drinking water, making it unable to meet safe drinking standards. The consequences of the air and water pollution caused by mercury are very serious. After being eaten by aquatic organisms, CH3Hg is produced. This is a highly toxic substance, as long as half an ear spoon can cause death. Mercury itself destroys the central nervous system, and the effects of reproductive defects it causes are also very serious. Mercury can also damage the kidneys and liver, and it can even lead to death if the dose is sufficient. Mercury can be transferred in different ways in the soil, water flow, even the atmosphere, and the food chain. Therefore, persistence, easy mobility, and high bio-concentration make mercury one of the world's most attractive environmental pollutants. The most serious incident of mercury poisoning in history was the Japanese Minamata disease, when hundreds of people died from mercury contamination in Minamata Bay. Now the Japanese government has learned a lesson and demanded that all obsolete fluorescent lamps must be treated with toxic substances, requiring people who purchase ordinary fluorescent lamps to pay twice as much to prepay the treatment fee for toxic substances.
Recently, the Chinese government issued 100 million energy-saving lamps free of charge. Although recently, the mercury content of special low-mercury energy-saving lamps abroad can be reduced to less than 5 mg (it is not known whether the Chinese government issued such low-mercury energy-saving lamps), but in the slightest Nor did it reduce its harmfulness because the mercury content of such a low-mercury energy-saving lamp was enough to contaminate 27.27 tons of drinking water. And 100 million energy-saving lamps are enough to pollute 2.7 billion tons of water, which is equivalent to the amount of drinking water for the people of the country for several years.
Because China does not have special recycling agencies and recycling regulations, most fluorescent and energy-saving lamps are buried like ordinary garbage. Both fluorescent and energy-saving lamps use extremely fragile glass as the shell, so the mercury must be Will come out, and because of the high proportion of mercury, it is easy to sink and penetrate into the groundwater, and then be used by humans and animals. The consequences are unimaginable. In particular, the vast majority of the people are almost completely ignorant of the harmful effects of mercury.
In addition, in all electric light sources that emit mercury vapor, electrons are used to bombard mercury vapor to generate ultraviolet light. This ultraviolet light is also an environmental pollution. Its main wavelength is 2537 Angstroms = 2537x10-10m = 253.7nm, called UV-C ultraviolet rays. About 60% of the electrical energy consumed can be converted to ultraviolet light, and other energy (about 40%) is converted to thermal energy. The ultraviolet light is absorbed by the fluorescent material on the inner surface of the lamp to release the visible light. Different fluorescent substances emit different visible light. The efficiency of converting "ultraviolet light" to "visible light" is about 40%. Therefore, the efficiency of the fluorescent lamp is about 60% x 40% = 24% is about three to five times that of the same power tungsten lamp. In other words, 100%-(40%+24%)=36% of the ultraviolet rays are not converted into other energy and directly radiate on the glass tube wall. 36% of ultraviolet light is about 94% depleted through the glass tube wall, so there may be 36% x6% = 2.16% of UV-C through the glass tube. UV-C is already considered to be Deep UV to the human body, causing great harm. The United States GE strange company recommended that human exposure to fluorescent lamps do not exceed 16 hours. UV damage to the human body is the total amount of lifelong accumulation. This is crucial for those who love beauty.
Not only that, but also energy-saving lamps and fluorescent lamps and microwave radiation. A Taiwanese scholar measured the microwave radiation of energy-saving lamps in his home. The results are as follows. When the lamp is not switched on, the microwave radiation measured in the room is 0.011 microwatts per square centimeter (0.011 μW/cm2) in the 0.5-3 GHz bandwidth. After turning on a 60 W incandescent lamp, the microwave value is obtained. No change; replaced with a 15W energy-saving lamp, the microwave value of up to 50 microwatts per square centimeter (50μW/cm2) is 5,000 times that of incandescent lamps. Then replaced by a 26W energy-saving lamp, the microwave radiation value of up to 100 microwatts per square centimeter (100μW/cm2), is 10,000 times that of incandescent lamps, almost even higher than the mobile phone. The national microwave health standard is 50 microwatts/cm2, so it has exceeded the national microwave health standards. The 15 watt energy-saving lamp has an electromagnetic wave intensity of about 70 milli-gauss, and the 26-watt energy-saving lamp has an electromagnetic wave intensity of 80 milli-gauss. The 60-watt incandescent lamp is almost zero. Because the structure of the fluorescent lamp and the energy-saving lamp is exactly the same, the microwave radiation of the fluorescent lamp will only be higher than that of the energy-saving lamp, and will never be lower than the energy-saving lamp. This microwave radiation can cause dizziness and sensation. It is still unknown as to what diseases will be caused. Japanese research shows that people who work at computers for a long time are twice as likely to get glaucoma than others, knowing that computer LCD monitors use cold cathode fluorescent lamps similar to fluorescent lamps as backlights.
The LED lamp is a completely environmentally friendly product that does not contain mercury, and there is no ultraviolet radiation, but its driving power supply has extremely low microwave radiation. The use of this new light source completely eliminates all kinds of pollution and can therefore be called a true "green light source".
We know that mercury is an extremely toxic substance. However, mercury is present in almost all currently used high-efficiency light sources. The mercury content of various electric light sources is shown in the following table:
26mm fluorescent lamp
Metal Halide Lamp
High pressure sodium lamp energy saving lamp (10mm) various LED
25-45mg
20-25mg
12-14mg
10-15mg0
Mercury has a very low boiling point and can evaporate at room temperature. After a broken discarded light source is broken, mercury vapor is immediately emitted to the surroundings, and the concentration of mercury in the ambient air can be instantaneously increased to 10-20 mg/m3, exceeding the national maximum allowable concentration of mercury in the air (0.01 mg/m3). m) 1000 to 2000 times. According to the study of mercury at Stanford University in the United States, 1 mg of mercury is enough to contaminate 5454.5 kg of drinking water, making it unable to meet safe drinking standards. The consequences of the air and water pollution caused by mercury are very serious. After being eaten by aquatic organisms, CH3Hg is produced. This is a highly toxic substance, as long as half an ear spoon can cause death. Mercury itself destroys the central nervous system, and the effects of reproductive defects it causes are also very serious. Mercury can also damage the kidneys and liver, and it can even lead to death if the dose is sufficient. Mercury can be transferred in different ways in the soil, water flow, even the atmosphere, and the food chain. Therefore, persistence, easy mobility, and high bio-concentration make mercury one of the world's most attractive environmental pollutants. The most serious incident of mercury poisoning in history was the Japanese Minamata disease, when hundreds of people died from mercury contamination in Minamata Bay. Now the Japanese government has learned a lesson and demanded that all obsolete fluorescent lamps must be treated with toxic substances, requiring people who purchase ordinary fluorescent lamps to pay twice as much to prepay the treatment fee for toxic substances.
Recently, the Chinese government issued 100 million energy-saving lamps free of charge. Although recently, the mercury content of special low-mercury energy-saving lamps abroad can be reduced to less than 5 mg (it is not known whether the Chinese government issued such low-mercury energy-saving lamps), but in the slightest Nor did it reduce its harmfulness because the mercury content of such a low-mercury energy-saving lamp was enough to contaminate 27.27 tons of drinking water. And 100 million energy-saving lamps are enough to pollute 2.7 billion tons of water, which is equivalent to the amount of drinking water for the people of the country for several years.
Because China does not have special recycling agencies and recycling regulations, most fluorescent and energy-saving lamps are buried like ordinary garbage. Both fluorescent and energy-saving lamps use extremely fragile glass as the shell, so the mercury must be Will come out, and because of the high proportion of mercury, it is easy to sink and penetrate into the groundwater, and then be used by humans and animals. The consequences are unimaginable. In particular, the vast majority of the people are almost completely ignorant of the harmful effects of mercury.
In addition, in all electric light sources that emit mercury vapor, electrons are used to bombard mercury vapor to generate ultraviolet light. This ultraviolet light is also an environmental pollution. Its main wavelength is 2537 Angstroms = 2537x10-10m = 253.7nm, called UV-C ultraviolet rays. About 60% of the electrical energy consumed can be converted to ultraviolet light, and other energy (about 40%) is converted to thermal energy. The ultraviolet light is absorbed by the fluorescent material on the inner surface of the lamp to release the visible light. Different fluorescent substances emit different visible light. The efficiency of converting "ultraviolet light" to "visible light" is about 40%. Therefore, the efficiency of the fluorescent lamp is about 60% x 40% = 24% is about three to five times that of the same power tungsten lamp. In other words, 100%-(40%+24%)=36% of the ultraviolet rays are not converted into other energy and directly radiate on the glass tube wall. 36% of ultraviolet light is about 94% depleted through the glass tube wall, so there may be 36% x6% = 2.16% of UV-C through the glass tube. UV-C is already considered to be Deep UV to the human body, causing great harm. The United States GE strange company recommended that human exposure to fluorescent lamps do not exceed 16 hours. UV damage to the human body is the total amount of lifelong accumulation. This is crucial for those who love beauty.
Not only that, but also energy-saving lamps and fluorescent lamps and microwave radiation. A Taiwanese scholar measured the microwave radiation of energy-saving lamps in his home. The results are as follows. When the lamp is not switched on, the microwave radiation measured in the room is 0.011 microwatts per square centimeter (0.011 μW/cm2) in the 0.5-3 GHz bandwidth. After turning on a 60 W incandescent lamp, the microwave value is obtained. No change; replaced with a 15W energy-saving lamp, the microwave value of up to 50 microwatts per square centimeter (50μW/cm2) is 5,000 times that of incandescent lamps. Then replaced by a 26W energy-saving lamp, the microwave radiation value of up to 100 microwatts per square centimeter (100μW/cm2), is 10,000 times that of incandescent lamps, almost even higher than the mobile phone. The national microwave health standard is 50 microwatts/cm2, so it has exceeded the national microwave health standards. The 15 watt energy-saving lamp has an electromagnetic wave intensity of about 70 milli-gauss, and the 26-watt energy-saving lamp has an electromagnetic wave intensity of 80 milli-gauss. The 60-watt incandescent lamp is almost zero. Because the structure of the fluorescent lamp and the energy-saving lamp is exactly the same, the microwave radiation of the fluorescent lamp will only be higher than that of the energy-saving lamp, and will never be lower than the energy-saving lamp. This microwave radiation can cause dizziness and sensation. It is still unknown as to what diseases will be caused. Japanese research shows that people who work at computers for a long time are twice as likely to get glaucoma than others, knowing that computer LCD monitors use cold cathode fluorescent lamps similar to fluorescent lamps as backlights.
The LED lamp is a completely environmentally friendly product that does not contain mercury, and there is no ultraviolet radiation, but its driving power supply has extremely low microwave radiation. The use of this new light source completely eliminates all kinds of pollution and can therefore be called a true "green light source".
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