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Journal article
Inactivation of bacteria using dc corona discharge: role of ions and humidity
New journal of physics, v 13(10), p103033
24 Oct 2011
PMID: 22403515
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Here we present the results of an experimental study of the effect of ions produced in a dc corona discharge on inactivation of bacteria on the surface of agarose gel. Both positive and negative corona discharges in various gases at different humidities were studied. The measurements in air, O-2, N-2, Ar and He mixtures show that there is no inactivation in pure N-2, pure O-2 and an N-2-H2O mixture. The best results were achieved in the case of direct treatment, when discharge was ignited in oxygen and water-containing mixtures. We show that neither UV radiation, ozone or H2O2 nor other neutral active species alone produced by corona have an effect on bacteria viability. It is shown that the main role of charged particles may be related to the faster transport of active peroxide species-cluster ions OH-(H2O)(n) and H3O+(H2O)(n). The efficiency of these radicals is much higher than that of the oxygen radicals and ions (including O-2(-), O-4(+) and O-3) and that of nitrogen and argon ions.
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Details
- Title
- Inactivation of bacteria using dc corona discharge: role of ions and humidity
- Creators
- Danil Dobrynin - Drexel UniversityGary Friedman - Drexel UniversityAlexander Fridman - Drexel UniversityAndrey Starikovskiy - Drexel University
- Publication Details
- New journal of physics, v 13(10), p103033
- Publisher
- Iop Publishing Ltd
- Number of pages
- 13
- Grant note
- R01 EB013011-01; R01 EB013011 / NIBIB NIH HHS; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Institute of Biomedical Imaging & Bioengineering (NIBIB)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Electrical and Computer Engineering; C. and J. Nyheim Plasma Institute; Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:000296663400006
- Scopus ID
- 2-s2.0-80155207454
- Other Identifier
- 991019168854904721
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Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Physics, Multidisciplinary