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