Preliminary Study of Pulsed Ultraviolet Technology for Low-Temperature Disinfection
1National Institute of Environment Health, Chinese Center for Disease Control and Prevention, Beijing, China.
Introduction:
To explore the feasibility of pulsed ultraviolet (UV) light technology for low-temperature disinfection, a series of experiments were conducted.
Methods:
Pulsed UV technology's effectiveness in disinfecting Gram-positive Staphylococcus aureus and Gram-negative Escherichia coli on different carriers were studied under varying temperatures.
Results:
Under different temperatures and constant radiation illumination (i.e., distance), the disinfection effect was correlated with irradiation time; among the three carriers, the disinfection effect of cloth sheets was the best, followed by stainless steel sheets, and corrugated paper sheet. The disinfection effect on Gram-negative bacteria Escherichia coli was better than that on Gram-positive bacteria Staphylococcus aureus overall.
Discussion:
Temperature has a limited effect on pulsed UV disinfection. Irradiation times and carrier types are influencing factors.
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