Dobrynin Danil, Friedman Gary, Fridman Alexander, Starikovskiy Andrey
Electrical and Computer Engineering Department, College of Engineering, Drexel University, USA.
New J Phys. 2011 Oct;13. doi: 10.1088/1367-2630/13/10/103033.
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)-H(2)O 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 H(2)O(2) 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(-)(H(2)O)(n) and H(3)O(+)(H(2)O)(n). The efficiency of these radicals is much higher than that of the oxygen radicals and ions (including [Formula: see text] and O(3)) and that of nitrogen and argon ions.
在此，我们展示了一项关于直流电晕放电产生的离子对琼脂糖凝胶表面细菌灭活作用的实验研究结果。研究了在不同湿度的各种气体中进行的正电晕放电和负电晕放电。在空气、O₂、N₂、Ar和He混合物中的测量结果表明，在纯N₂、纯O₂和N₂ - H₂O混合物中不存在灭活现象。在直接处理的情况下，即在含氧和含水混合物中点燃放电时，取得了最佳结果。我们表明，紫外线辐射、臭氧或H₂O₂以及电晕单独产生的其他中性活性物质均对细菌活力没有影响。结果表明，带电粒子的主要作用可能与活性过氧化物簇离子OH⁻(H₂O)ₙ和H₃O⁺(H₂O)ₙ的更快传输有关。这些自由基的效率远高于氧自由基和离子（包括[化学式：见原文]和O₃）以及氮和氩离子的效率。
