7 AIRBORNE ROS

Reactive Oxygen Species

OH

Hydroxyl Radicals
– Highly Reactive
– Leads to the formation of H2O2
– Reactive with pollutants and starts decomposition by cracking
– Destroys VOC by removing of a hydrogen (H) atom forming water (H2O) and alkyl Radical (R•)
₁O₂

Singlet Oxygen (Dioxidene)
– Highly Reactive toward organic compounds
– Participates in reaction to form H2O2
– Paramagnetism
– Attracts organic compounds that results in oxidation
O₂₋

Superoxide
– Reactive oxygen ion – Anion
– Free radical
– HO2 hydroperoxyl
– Paramagnetism
– Attracts organic compounds that results in oxidation
O(3P)

Atomic Oxygen
– Highly reactive and quickly bonds with molecules
– Free Radical forms into O3
ONOO-

Peroxynitrite (Peroxonitrite)
– Oxidant
– Ion
– Damages a wide array of molecules in cells. Including DNA & Proteins.
Exits HVCP Chamber Into Environment: Longer lived ROS (minutes to hours)
O₃

Ozone (Trioxygen)
– Triatomic allotrope
– Most powerful oxidant
– Sanitizer
– Decontamination
– Destroys Mold, VOC, Etc.
– Low levels are not powerful to be effective with ozone alone! We keep setpoints at 30ppb (parts per billion).
– Half-life varies with atmospheric conditions such as temperature, humidity, and air movement.
H₂O₂

Hydrogen Peroxide – Gas Phased
– Deodorize air
– Oxidizer
– Antiseptic
– Sanitizer
– Antimicrobial agent
– Destroyed by light
Bonus: Created By Ozone And Hydrogen Peroxide
H₂O₃

Hydrogen Trioxide – Trioxidane
– Active Antimicrobial formed through peroxone process with O3 and H2O2 mix
– Approximately 12min half-life

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