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Afaka mamono ny virus sy ny bakteria ny hazavana UVC

Fotoana: 2020-04-21

For decades, scientists have been devoted to the research of UVC light for disinfection, especially when the UVC market is huge and the human pursuit of health is more important than ever before.


More and more reports indicate that UVC light products can kill viruses and bacteria higher than a 99.9% rate, which directly leads to the crazy purchase of UVC products.


But in fact, few people know exactly what UVC light is and whether UVC light is useful for sterilization.

Manaraka, hanazava amin'ny an-tsipiriany izahay what UVC lights are, how they work, their precautions for use and some commercial applications mba hanampiana anao hahazo fahalalana mazava.


uvc light sterilization


Wha is UVC light?


Araka ny fantatsika rehetra, ny Masoandro dia fifangaroan'ny angovo maivana amin'ny halavan'ny halavan'ny halavany.


Ny halavan'ny halavan'ny halavany dia manomboka amin'ny 380 nanometres (nm) ka hatramin'ny 780 nanometers (nm) dia antsoina hoe hazavana hita maso, fa ireo izay mihoatra ny halavan'ny halavan'ny halavany dia antsoina hoe hazavana tsy hita.

Ultraviolet light is a type of invisible light ranging from 10 nm to 400 nm. And the function of UV light depends on the range of wavelength.

  • UV-A: 320nm ka hatramin'ny 400 nm

It makes up the majority of UV light reaching the Earth. And it can damage our skin.

  • UV-B: 280nm ka hatramin'ny 320nm

Afaka mitsabo aretin-koditra izy io. Fa ny fihoaram-pefy tafahoatra kosa dia hiteraka sunburn ary homamiadan'ny hoditra mihitsy aza. Ary latsaky ny 2% ny UVB no mahatratra ny tany.

  • UV-C: 200nm ka hatramin'ny 280nm

It is particularly good at sterilizing. But its penetration ability is very weak. Before reaching the ground, all UVC light will be absorbed by ozone in the atmosphere. That means, standing under the sun is useless for sterilization.

  • In summary: UV light Rule

Arakaraky ny halavan'ny halavan'ny halavan'ny halavany sy ny tanjaky ny angovo no mahamaika kokoa, fa ny tsy fahampian'ny fidirana kosa no maha haingana ny fanjavonana.


Function of UVC light

Related Knowledge: Which UV light is the best?

Because UVC light can be used for sterilization, coupled with the epidemic environment, the market demand for UVC products can be described as Crazy now.

Ary ny tombam-bidin'ny tsena aza dia nitombo hatramin'ny 140,000,000 dolara amerikana ka lasa 500,000,000 dolara amerikana.

The big question right now may be how does UVC light work and can it kill viruses & bacteria?


How does UVC light work?


Before the deep study of UVC light, I thought all sunlights have the sterilization effect. Bacteria and viruses will be killed by "sunburn" or heat.

But that's not the truth.


  • Sterilization Principle of UVC light


In fact, UVC light will destroy the DNA or RNA of the bacteria & viruses, without the use of chemicals, making them inactive and unable to reproduce.

Since the lifespan of single bacteria & viruses is very short, once they lose the reproduce ability, it means death. So the purpose of sterilization has been achieved.


In scientific research, it has been found that UVC light can use very little time to finish the disinfection process and make most microbes reduction up to 99.99%.


Research of UVC light

Based on this information, UVC light is believed to be quiet effective at killing viruses and bacteria.


However, the vitality of different viruses and bacteria are different. Some bacteria&viruses may be injured once they are exposed to UVC light, while others are not.


Raha tsy ampy ny fatra UV, ny otrik'aretina sasany dia tsy ho simba vetivety, ary avy eo hanamboatra tsikelikely ny firafitr'izy ireo.


  • Special requirements of UVC lights

At present, there are no specific figures to show how much UV dose flu viruses needs to be killed. Maybe 1,085 mJ / cm2 or 3,640 mJ / cm2 . Anyway, a huge number.

You may be wondering if we stand under the sunlight containing UVC light, can we be disinfected by it?

Unfortunately, the answer is no. Although the sterilization ability of UVC light is extremely strong, the penetration ability to objects (including air) is extremely weak. Before reaching the ground, all UVC light will be filtered out by ozone in the atmosphere.

Izany no antony ilantsika mampiasa fiara mitovitovy amin'ny jiro ultraviolet disinfection mba hahatratratra ny disinfection.


Please pay attention to the fact that most UV lamps on the market are only designed to meet the common standard, that is, 40mJ / cm2 UV dose required for a 99.99% inactivation rate.


Study result of UVC light

Further considering the decay of UVC light in the air, those lamps make no sense for disinfection.

Ka aza mino tsotra ny filazan'ny orinasa sasany fa "afaka mamono ireo viriosy sy bakteria isika", indraindray no fiteny marketing.

Tsy maintsy takatsika fa ny fahombiazana, ny fotoana ary ny vidiny no tena fototry ny safidin'ny jiro UV.


Are ultraviolet lamps containing uvc light safe?


Although UVC light can indeed kill viruses and bacteria, there are various problems with household ultraviolet disinfection lamps on the market:

(1) Ny jiro ultraviolet nentim-paharazana dia lehibe (farafahakeliny 40cm ny haavony na ambony), fahombiazana ambany. Ny loharano jiro LED 1W dia afaka amin'ny fonony afa-tsy amin'ny habaka 1 metatra tora-droa.


(2) Ny loharanom-pahazavana amin'ny ankamaroan'ny jiro ultraviolet disinfection dia misy mercury, izay ratsy amin'ny tontolo iainana sy ny fahasalamana raha avoaka.

(3) Ny ankamaroan'ny jiro afindran-doza ultraviolet dia jiro miendrika be dia be, toy ny UVC, UVA, ary UVB, izay azo inoana fa hamokatra ozone, mitarika amin'ny soritr'aretina toy ny havizanana, kohaka, fikosohana ny tratran'ny ati-doha, lozabe, fahatsiarovana ary fahaverezan'ny fahatsiarovana.


Applications of UVC light

From this perspective, the main application scenarios of UVC light should be industrial types to maintain safe.


Applications of uvc light


To make better use of UVC light, we have developed a new lighting technology, which can make the UVC energy in a very small size with 3.5mm x 3.5mm without mercury.


Amin'ity habe ity, azo ampiharina amin'ny fitaovana portable maro miaraka amin'ny fiasan'ny disinfection:

(1) Tany amboniny


Toerana mifangaro toy ny efitrano fandraisam-bahiny sy ny fitaovana, efitrano fandraisam-bahiny, seranam-piaramanidina, ary saika ny toerana rehetra na ny toerana manokana.


(2) Rano


Mercury-free UVC light is a clean and safe water disinfectant, UVC LED based solutions tackle these pathogens without impacting the water's smell, taste or mineral contents.

Izahay dia afaka mampiasa vahaolana UVC amin'ny rafitry ny fanadiovana rano na ny rafitry ny fidiovana.


(3) Rivotra


Ny fanadiovana ny rivotra dia manaisotra ny 99.97% amin'ny singa amin'ny rivotra an-tserasera, na izany aza, ny sivana dia tsy manaisotra zavamiaina bitika bitika patogenika, toy ny gripa.

Azontsika atao ny mampiasa vahaolana UVC amin'ny rafitra fanadiovana ny rivotra na ny rafitra rindrambaiko amin'ny fantsom-barotra amin'ny rivotra.


How to use UVC light

All in all, UVC light can indeed kill viruses and bacterial if we choose the right system for specific applications.


Related article: Ny mpitari-dalana farany farany amin'ny fividianana UV Lamps anao


Vahaolana vahaolana UVC mahomby ho an'ny Minisplits


Vahaolana UVC mahomby ho an'ny unit HVAC