Stephen Wengraitis, Patrick McCubbin, Mary Margaret Wade, Tracey D. Biggs, Shane Hall, Leslie I. Williams and Alan W. Zulich Pulsed UV-C Disinfection of Escherichia coli With Light-Emitting Diodes, Emitted at Various Repetition Rates and Duty Cycles Photochemistry and Photobiology 89
It has been suggested that cells exposed to pulsed UV radiation can be damaged by the photophysical disturbance of incoming pulses. We investigated this effect by exposing Escherichia coli samples to pulsed 272 nm radiation emitted by light emitting diodes (LEDs), at various pulse repetition frequencies and duty cycles. Then, we investigated the parameters for the most time-effective and energy-efficient disinfection, and compared our results with those from other studies.
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