What’s known about UVC light and the new coronavirus?
UVC light can be used to kill the new coronavirus, SARS-CoV-2. Let’s look at what the research has discovered about UVC light and this coronavirus so far.
UVC light for disinfecting liquids
A recent study in the American Journal of Infection Control (AJIC) investigated using UVC light to kill large amounts of the new coronavirus in liquid cultures.
The study found that UVC light exposure completely inactivated the virus in 9 minutes.
UVC light for disinfecting surfaces
Another study, also published in the AJIC, looked at using a specific type of UVC light to kill SARS-CoV-2 on laboratory surfaces. The study found that the UVC light reduced the live coronavirus by 99.7 percent in 30 seconds.
The type of UVC light used in this study is called far-UVC light, which is UVC light between the wavelengths of 207 and 222 nanometersTrusted Source.
Far-UVC light is still damaging to germs but is less of a hazard to your skin and eyes than other types of UVC light.
UVC light for disinfecting air
One studyTrusted Source, published in the journal Scientific Reports, explored using far-UVC light to kill two types of human coronaviruses in the air. These two coronaviruses, 229E and OC43, can cause the common cold in humans.
Based off their results with these viruses, researchers estimated that, when applied to current regulatory standards, far-UVC light could kill 99.9 percent of airborne coronaviruses in about 25 minutes. They believe that these findings would extend to SARS-CoV-2 as well.
SUMMARY
UVC light can effectively kill SARS-CoV-2 or other coronaviruses in liquids, on surfaces, or in the air. Due to the fact that it presents less of a health hazard, far-UVC may be a good option for disinfection.
" "Can I drink water after UV disinfection? | Remove from Collection | Edit Post
Ultraviolet radiation just sterilizes the water, killing bacteria in the water and making the water cleaner, so drink it with confidence.
It just irradiates the water with ultraviolet light to kill pathogenic bacteria, bacteria, viruses, etc. in the water. It is a kind of physical disinfection, not chemical disinfection. It can make the water cleaner and can be drunk with confidence.
Germicidal lamps have powerful destructive power. They are generally used to freshen the air and have a remarkable sterilization effect. In Northeastern dialect, it means: ""The sterilization effect is great!"" It has a certain carcinogenic ability, so many people begin to worry about the safety of food while enjoying germicidal lamps to bring sterile substances that are regarded as healthy.
Long-term exposure of our skin to ultraviolet rays may cause skin cancer. Many people think that ultraviolet germicidal lamps can be used for sterilizing food? Will the sterilized food cause harm to the human body? Today, let’s reveal the secret for you. Can the food processed by the germicidal lamp still be eaten? Will it cause harm to the human body? Let's take a look!
When UV light is absorbed by bacteria or viruses, it damages DNA, rendering them incapable of multiplying. But DNA is not a nutrient component of food, so what does damage matter? As long as the molecules of the substances the human body needs are not destroyed. The damaged DNA molecules will be decomposed when they enter the human body, and no harmful substances will be produced." "Safety Precautions:
UV radiation can cause damage to eyes and skin, so UV lamps should be used according to strict safety principles, please do not observe UV radiation without eye protection, any part of the body that may be exposed to radiation must be covered, ordinary glass, Plexiglass (like acrylic), especially all opaque materials, can shield UV radiation at 185nm and 254nm. When using ozone-generating UV lamps, measures must be taken according to the ozone concentration limit
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