After the outbreak of the urinary mercury door incident in Foshan, although the company has already done a lot of remedial measures, people have gained a deeper understanding of the seriousness of mercury pollution through this incident, and some netizens have initiated a joint boycott of energy-saving lamps. On the other hand, as urinary mercury doors become a hot spot in society, consumers can't help but worry about whether the lighting products used in their homes are safe.
Regular lighting products can be used with confidence
It is no secret that energy-saving lamps contain mercury. According to the current lighting production process, all energy-saving lamps must be produced with toxic metal mercury. The principle of illuminating the energy-saving lamp is that ultraviolet light is generated by the ionization of mercury vapor, and the ultraviolet ray causes the phosphor to emit light. Liu Hong, an expert from the Energy Research Institute of the National Development and Reform Commission, analyzed that an energy-saving lamp tube contains an average of 0.5 mg of mercury. Only a few high-quality energy-saving lamp manufacturers can control the mercury content to about 0.25 mg.
But consumers don't have to worry about mercury in energy-saving lamps. According to experts, the energy-saving lamps contain a small amount of mercury, which will not leak during normal use. Even if it is broken occasionally, its content will not cause mercury poisoning. At the same time, the data show that the human body has a certain ability to excrete mercury. Adults take 0.025 mg of methylmercury per day, which does not accumulate in the body due to human excretion. Experts also warned that for lighting products, safe use is far more important than worrying about mercury leaks.
Waste energy-saving lamps must be disposed of properly
Although a single energy-saving lamp contains a small amount of mercury, mercury is a highly toxic substance, and a large amount of mercury accumulation has a major environmental hazard. With the national energy conservation and emission reduction, high-efficiency lighting product promotion and other policies, the development of China's energy-saving lamps ushered in the golden stage. At present, China has an annual output of billions of energy-saving lamps. In 2008 alone, the number of energy-saving lamps promoted through financial subsidies exceeded 100 million. It is the world's largest energy-saving lamp. However, when these energy-saving lamps are discarded, their potential mercury pollution should not be underestimated. At present, there is no special energy-saving lamp recycling mechanism in China, so the disposal of discarded energy-saving lamps has become a major problem.
In the absence of a special energy-saving lamp recycling mechanism, consumers should be careful not to arbitrarily discard the bulb when handling the waste energy-saving lamp, and try to concentrate it as much as possible.
Electric trains that collect their current from overhead line use a device such as a pantograph, bow collector or trolley pole. It presses against the underside of the lowest overhead wire, the contact wire. Current collectors are electrically conductive and allow current to flow through to the train or tram and back to the feeder station through the steel wheels on one or both running rails. Non-electric trains (such as diesels) may pass along these tracks without affecting the overhead line, although there may be difficulties with overhead clearance. Alternative electrical power transmission schemes for trains include third rail, ground-level power supply, batteries, and electromagnetic induction.
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