Table 9.
Summary for each of the decontamination procedures for instance with the columns procedure, supply required, and threat to human health.
Decontamination procedure | ||||
---|---|---|---|---|
Procedure | Supply time | Deposition time | Room ventilation | Threat to human health |
Aerosolized hydrogen peroxide | 6 min/100 m2 | 1-2 h | 15-30 min | Inhalation acute toxicity 1.93 mg/M3 Inhalation long-term toxicity 0.21 mg/M3 |
H2O2 vapor heat-generated vapor | 15-50 min cycle | ~130 min | 15-20 min | Eye irritation, odor threshold |
Surface disinfection via aerosol | 15 minutes at 20°C | ~2 h | ~10 min | Eye irritation and mucosal tissue irritation |
HOCI generated fog | 10 min | 30 min to 2 h | 20-30 min | At prolonged exposure mild inflammatory reactions to mucosal tissues. At free chlorine low concentration pH 7.0 no toxicity |
Dilute hydrogen peroxide | Continuous | ~2 h | Not required | >3% hydrogen peroxide: mucosal tissue irritation, vomiting and diarrhea. Chronic inhalation: upper respiratory tract inflammation |
UVC light (207–222 nm) | 60-120 sec/30 m2 | ~ | Not required | At direct exposure temporary damage and burns to the eyes, cornea, and potential carcinogen to the skin |
PX-UV systems | 12-30 min/30 m2 | ~ | Not required | Skin and mucosal damage at prolonged exposure |
Gaseous ozone | 10-30 min/30 m3 | ~ | 10 min | Lungs damage, chest pain, coughing, shortness of breath, and throat irritation |