Use ultraviolet disinfection lamp to room disinfection? These points must pay attention!


Guangdong market supervision

Guangdong market supervision

Xiao Bian who came back to work on Monday

amazingly discovered

My own office last Friday after work

Two pots of flowers that are also full of business

suddenly withered

After questioning

It turned out that my colleague took the ultraviolet lamp.

The office was disinfected

Probably because the ultraviolet lamp is too close to the two potted flowers.

and was affected



Recently, the unit has installed ultraviolet lamps in dining halls, elevators and other places, which makes many people immediately nervous. Will ultraviolet disinfection lamps have an impact on human health?


Improper disinfection of citizens with ultraviolet lamp burns eyes


Last year, the Guangdong product injury monitoring and monitoring point detected a case of electro-optic ophthalmia injury caused by improper use in Dongguan, our province.


"Guangzhou Daily" Dayang Net reported on February 9: 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 it for more than an hour. During this time, she was walking in the living room. When I woke up from lunch break in the afternoon, I found that my eyes were a little tingling and tearful.


That night, her relative Aunt Hu also put the ultraviolet lamp into the room and disinfected it for 3 hours. Similarly, Aunt Hu did not avoid the disinfected area and continued to walk around the room. Early the next morning, Aunt Hu also had red and swollen eyes, tears, and stinging pain.


The doctor's examination found that the corneal epithelium of both of them had varying degrees of damage, resulting in conjunctival edema, eyelid edema, and redness and swelling of both eyes. It is indeed the electro-optic ophthalmia caused by improper use of ultraviolet light and ultraviolet radiation on the eyes.




Let us know the ultraviolet disinfection lamp

And learn how to properly use ultraviolet disinfection lamp



Ultraviolet disinfection lamp, also known as ultraviolet germicidal lamp and ultraviolet fluorescent lamp, is a kind of lamp that uses ultraviolet sterilization to sterilize and disinfect.The use of such products for indoor disinfection is one of the common disinfection methods in public places.UV lamp wavelength is 200-270nm, sterilization center wavelength is 253.7nm, belonging to the short-wave ultraviolet,This ultraviolet radiation mainly through radiation damage and destruction of microorganisms (bacteria, viruses, spores) nucleic acid function to kill microorganisms and other pathogens), in order to achieve the purpose of disinfection.



The commonly used ultraviolet disinfection lamps have specifications of 15W, 20W, 30W and 40W, and the use voltage is 220V. They are mainly used for disinfection and sterilization of personnel and are generally installed in disinfection changing rooms and laboratories. The bacteria and viruses carried on the clothes can be killed by the ultraviolet disinfection lamp for about 5 minutes. It can also be used to disinfect the air in laboratories and operating rooms that require clean air, and the bacteria in the air can be killed by irradiation for about 30 minutes.



(Photo from network)


Although ultraviolet lamp disinfection

Sounds simple and quick

But if used improperly

Can also cause great harm to the human body

Because ultraviolet rays are not divided between the enemy and us.

It's all wiped out

Then ultraviolet light will

What harm does it cause to the human body?


Pigment deposition


If it is irradiated by ultraviolet disinfection lamp for a long time, it will cause serious skin pigmentation and rough skin. Individual people will also experience skin aging. If the treatment is not timely, it may cause precancerous lesions, such as more common Skin cancer or cataract. Therefore, we must avoid being radiated by ultraviolet light 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 degree of impact on the body, which will lead to electro-optic ophthalmia.


After the emergence of this kind of disease, patients often have symptoms such as red and swollen eyes, dry eyes, and tears. In severe cases, it will cause a certain degree of damage to vision. Under normal circumstances, if the ultraviolet irradiation lamp is irradiated for 30 minutes to 60 minutes, it will lead to the appearance of electro-optic ophthalmia, which is mainly caused by the absorption of a large amount of ultraviolet rays by the cells of our corneal epithelium and the tissue of the conjunctiva.

After the resumption of work, how to further do a good job of epidemic prevention and control has become the most concerned topic, people began to try various disinfection methods to protect themselves from the new crown pneumonia virus infection. However, ultraviolet disinfection has become the preferred disinfection method for some units or individuals due to factors such as simple use, no frequent replacement and moderate price. But if the ultraviolet disinfection lamp is used improperly, it will even cause harm to us faster than the virus. Therefore, pay attention to the following points in use:



When using ultraviolet disinfection lamps, no one can be in the room; when operating disinfection lamps, you must wear protective glasses or sunglasses to avoid direct vision of the light source, wear long sleeves and trousers to avoid direct skin contact.


The installation position of ultraviolet disinfection lamps in public places such as schools should be safe and appropriate to avoid children's touch. Special control switches should be set up and controlled by special personnel to prevent misoperation.



(Photo from network)


The appropriate power and quantity of ultraviolet sterilization should be selected according to the area of the specific place to achieve the ideal sterilization effect, and the general disinfection irradiation time is not less than 30 minutes. It is recommended that the air disinfection time for a room of 10 to 15 square meters is 40 minutes.


Do not use the ultraviolet disinfection lamp as a lighting lamp. It is not advisable to open the ultraviolet lamp for a long time. The disinfection time is 30 minutes to 1 hour.


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 and must be used when there is no one in the room. Therefore, it is best to use ultraviolet disinfection lamps with timing shutdown function. After disinfecting the room, open the window and ventilate for more than 30 minutes before continuing to use the room normally.