Three technologies promise to kill COVID-19—ultraviolet light, ozone, and robotically sprayed electrostatically charged disinfectant.
https://www.motortrend.com/news/tech-solutions-disinfecting-shared-cars-covid/
"The best-developed concept hails from Michigan-based supplier GHSP. Called Grēnlite, it employs germicidal 254-264-nm-wavelength ultraviolet-C light that destroys nucleic acids (the NA in DNA) to stop the reproductive cycle of microorganisms and pathogens. This has long been used in sanitizing and sterilizing drinking water, hospital rooms, offices, airplanes, etc.
UV-C light is invisible and is far more damaging to humans and animals than the UV-A and UV-B light that sunscreen blocks (atmospheric ozone typically filters UV-C), so the space to be disinfected must be empty. Laser, xenon, fluorescent, or LED sources can generate UV-C, but GHSP expects LED will win out in terms of power, mass, cost, and ease of vehicle integration. Today's fluorescent UV-C lamps and the ballasts that run them draw about 40-60 watts of power per unit, but LED promises to lower total power consumption.
GHSP's Grēnlite places high-power broadcast lamps above each seating row with additional low-power lamps focused on high-touch areas. And although a single LED can't provide ambient and UV-C light, adjacent LEDs in the same fixture can to simplify integration."
"But UV light only kills pathogens it shines on. What about germs sneezed into the shadows? Ozone gas—that weird smell you get when a light switch or car battery jumper cable sparks—is an unstable arrangement of three oxygen atoms, where one is eager to hop off and "oxidize" something. When it encounters a virus, that free-radical O atom penetrates the capsid protein shell encasing its genetic material and damages the viral RNA. It wreaks similar havoc on fungi, molds, pesticides, odors, and other potentially harmful substances. Testing recently proved it can neutralize COVID-19.
...
Because ozone is a lung irritant, the vehicle must remain closed and vacant during decontamination and long enough afterward for the ozone to decompose into molecular oxygen before use again. "
https://www.motortrend.com/news/tech-solutions-disinfecting-shared-cars-covid/
"The best-developed concept hails from Michigan-based supplier GHSP. Called Grēnlite, it employs germicidal 254-264-nm-wavelength ultraviolet-C light that destroys nucleic acids (the NA in DNA) to stop the reproductive cycle of microorganisms and pathogens. This has long been used in sanitizing and sterilizing drinking water, hospital rooms, offices, airplanes, etc.
UV-C light is invisible and is far more damaging to humans and animals than the UV-A and UV-B light that sunscreen blocks (atmospheric ozone typically filters UV-C), so the space to be disinfected must be empty. Laser, xenon, fluorescent, or LED sources can generate UV-C, but GHSP expects LED will win out in terms of power, mass, cost, and ease of vehicle integration. Today's fluorescent UV-C lamps and the ballasts that run them draw about 40-60 watts of power per unit, but LED promises to lower total power consumption.
GHSP's Grēnlite places high-power broadcast lamps above each seating row with additional low-power lamps focused on high-touch areas. And although a single LED can't provide ambient and UV-C light, adjacent LEDs in the same fixture can to simplify integration."
"But UV light only kills pathogens it shines on. What about germs sneezed into the shadows? Ozone gas—that weird smell you get when a light switch or car battery jumper cable sparks—is an unstable arrangement of three oxygen atoms, where one is eager to hop off and "oxidize" something. When it encounters a virus, that free-radical O atom penetrates the capsid protein shell encasing its genetic material and damages the viral RNA. It wreaks similar havoc on fungi, molds, pesticides, odors, and other potentially harmful substances. Testing recently proved it can neutralize COVID-19.
...
Because ozone is a lung irritant, the vehicle must remain closed and vacant during decontamination and long enough afterward for the ozone to decompose into molecular oxygen before use again. "
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