Disinfect The Room With Ultraviolet Disinfection Lamp? We Must Pay Attention To These Points

Citizens burn their eyes due to improper disinfection with ultraviolet lamp

Guangdong product injury monitoring point monitored last year that there was a case of electro-optic ophthalmia injury caused by improper use in Dongguan, our province.

At noon on February 3, 2020, Ms. Fang, who lives in Pingshan District, Shenzhen, turned on the ultraviolet light in the living room and disinfected for more than an hour. During this period, she has been walking around the living room. When I woke up from lunch break in the afternoon, I found my eyes tingling and crying.

That night, her relative aunt Hu also put the ultraviolet lamp into the room and disinfected it for three hours. Similarly, aunt Hu did not avoid the disinfection area and continued to walk around the room. The next morning, aunt Hu also had red and swollen eyes and tears, which hurt so much that she couldn't open her eyes.

After the doctor's examination, it was found that the corneal epithelium of the two people had different degrees of damage, resulting in conjunctival edema, eyelid edema and bilateral redness and swelling. It was indeed due to the improper use of ultraviolet lamp and ultraviolet irradiation of the eyes, resulting in electro-optic ophthalmia.

Now let's understand the ultraviolet disinfection lamp and learn how to use it correctly ↓↓↓

Ultraviolet disinfection lamp, also known as ultraviolet sterilization lamp and ultraviolet fluorescent lamp, is a lamp that uses the sterilization effect of ultraviolet to sterilize and disinfect.

Using this kind of products for indoor disinfection is one of the common disinfection methods in public places at present.

The wavelength of ultraviolet lamp is 200-270nm and the wavelength of sterilization center is 253.7nm. It belongs to short wave ultraviolet. This ultraviolet mainly kills microorganisms and other pathogens by damaging and destroying the nucleic acid function of microorganisms (bacteria, viruses, spores) by radiation.

The common specifications of ultraviolet disinfection lamps are 15W, 20W, 30W and 40W, and the service voltage is 220V. They are mainly used for disinfection and sterilization of personnel. They are generally installed in disinfection dressing rooms and laboratories.

The bacteria and viruses carried on the clothes can be killed after being irradiated by the ultraviolet disinfection lamp for about 5 minutes.

It can also be used to disinfect the air of laboratories and operating rooms requiring clean air. The bacteria in the air can be killed after irradiation for about 30 minutes.

Although UV lamp disinfection sounds very simple and fast, if it is not used properly, it will also cause great harm to the human body, because UV can be eliminated regardless of the enemy and ourselves. So what harm will UV do to the human body?

Pigment deposition

If it is irradiated by ultraviolet disinfection lamp for a long time, it will lead to serious pigmentation and rough skin. Individual groups will also have skin aging. If the treatment is not timely, it may also cause precancerous lesions, such as common skin cancer or cataract. Therefore, we must avoid being radiated by ultraviolet lamps for a long time.

Electro optic ophthalmia

In addition, we must also understand that short-term exposure to ultraviolet disinfection lamps will also have a certain impact on the body, which will lead to electro-optic ophthalmia.

After the occurrence of such diseases, patients often have symptoms such as red and swollen eyes, dry eyes and tears. In serious cases, they will also cause a certain degree of damage to vision. In general, if you irradiate the ultraviolet lamp for 30 to 60 minutes, it will lead to the emergence of electro-optic ophthalmia, which is mainly caused by the absorption of a large amount of ultraviolet rays by the cells of corneal epithelium and the tissue of conjunctiva.

How to further prevent novel coronavirus pneumonia has become a topic of concern for people after they resume work. Ultraviolet disinfection has become the preferred disinfection method for some units or individuals because of its simple use method, no frequent replacement and moderate price. However, if the ultraviolet disinfection lamp is not used properly, it will even cause damage to us faster than the virus. Therefore, pay attention to the following points in use:

1. When using ultraviolet disinfection lamp, there should be no one in the room; When operating the disinfection lamp, you must wear protective glasses or sunglasses, avoid looking directly at the light source, and wear long sleeves and trousers to avoid direct skin contact.

2. Ultraviolet disinfection lamps in schools and other public places shall be installed in a safe and appropriate position to avoid children's touch. Special control switches shall be set and controlled by special personnel to prevent misoperation.

3. Ultraviolet sterilization with appropriate power and quantity shall be selected according to the area of specific places to achieve ideal sterilization effect. Generally, the disinfection irradiation time shall not be less than 30 minutes. It is recommended to disinfect the air in a room of 10 15 square meters for 40 minutes.

4. Do not use the ultraviolet disinfection lamp as a lighting lamp. It is not suitable to turn on the ultraviolet lamp for a long time. The disinfection time should be 30 minutes-1 hour.

5. Since ultraviolet disinfection lamps are mostly used for disinfection in crowded places such as restaurants and schools, attention should be paid to the disinfection time. They can only be used when there is no one in the room. Therefore, ultraviolet disinfection lamps with regular shutdown function are used. After disinfecting the room, open the window for ventilation for more than 30 minutes before continuing to use the room normally.