​The harm of ultraviolet light to human body

Everyone should have some understanding of ultraviolet rays. We are often exposed to them in daily life. This is a kind of light that is invisible to the naked eye and appears not only on sunny days but also on cloudy days. This kind of light has certain benefits to the human body, but also certain disadvantages. It can kill bacteria, but it will make our skin darker and have some other results. So what are the harms of ultraviolet light to the human body?

Ultraviolet disinfection lamps use ultraviolet rays to kill bacterial propagules, spores, mycobacteria, coronaviruses, fungi, rickettsia and chlamydia. Ultraviolet rays can be used to disinfect objects, water and air contaminated by the above viruses.

Ultraviolet disinfection lamps are mainly divided into: high pressure, medium pressure and low pressure. For disinfection applications, low pressure is mainly used. According to national standards, the average lifespan is 8,000 hours. Some excellent products have reached a lifespan of 13,000 hours.

The harm of ultraviolet rays to the human body is directly proportional to the radiation intensity and radiation time of ultraviolet rays, that is, the greater the exposure dose, the more serious the harm to humans. Short-term exposure to radiation will cause redness, itching, and allergic papules on the skin; long-term exposure will cause serious damage to skin tissue, and sufficient doses of radiation can even cause skin cancer. Ultraviolet rays are also very harmful to human eyes. Short-term, high-dose exposure can cause redness and swelling of the eyes, tears, and inability to open the eyes. Long-term exposure to ultraviolet radiation can cause cataracts and even blindness. In addition, when exposed to ultraviolet radiation, the oxygen in the air will generate ozone, which can cause adverse reactions such as dizziness and nausea. Long-term exposure to ultraviolet light is harmful to the body.

Ultraviolet lamps are commonly used sterilization and disinfection tools in professional fields such as medicine, drinking water and food. During the SARS period, they began to enter various public places and even homes. Some of them look very similar to household fluorescent lamps. At present, many ordinary families buy it. However, because the warning signs on the products are not obvious and merchants often ignore its harmfulness in their publicity, consumers are often unaware of the harm that ultraviolet light can cause to the human body. Therefore, in recent years, injuries caused by ultraviolet light have occurred frequently.