空气离子对细菌的作用。I. 对液滴中葡萄球菌悬浮液的保护和致死作用。
The action of air ions on bacteria. I. Protective and lethal effects on suspensions of Staphylococci in droplets.
作者信息
KRUEGER A P, SMITH R F, GO I G
出版信息
J Gen Physiol. 1957 Nov 20;41(2):359-81. doi: 10.1085/jgp.41.2.359.
Abstract
Techniques have been devised for studying quantitatively the effects of air ions on microorganisms suspended in small drops. In smog-contaminated atmospheres moderate concentrations of positive and negative air ions exerted a protective effect on staphylococci by delaying the drop in pH customarily observed and by diminishing the rate of evaporation. In clean air higher concentrations of positive and negative air ions accelerated the rate of death of staphylococci apparently by direct action on the cells and by increasing the rate of evaporation. Air ion action in these experiments did not involve cell agglutination or direct radiation from the radioactive isotopes employed.
摘要
已经设计出了一些技术来定量研究空气离子对悬浮在小水滴中的微生物的影响。在受烟雾污染的大气中，适度浓度的正、负离子通过延缓通常观察到的pH值下降以及降低蒸发速率，对葡萄球菌起到了保护作用。在清洁空气中，较高浓度的正、负离子显然通过对细胞的直接作用以及提高蒸发速率，加速了葡萄球菌的死亡速率。这些实验中的空气离子作用并不涉及细胞凝集或所用放射性同位素的直接辐射。
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