Control of air ion density in rooms

Some Effects of Ionized Air on Penicillium notatum**Received December 5, 1959. from the School of Pharmacy, University of California Medical Center, San Francisco 22.

“…and effective climate control through regulation of air ionization has been reported (14,17). photoionization, high voltage brush discharges, high frequency currents, and atomization of water, the latter accounting for the high density of negative air ionization in the immediate vicinity of water falls and some spas.…”

Influence of air ions on the carbon dioxide output of the European corn borer, Ostrinia nubilalis

“…Tammet (1959) has described a typical corona generator which gave concentrations of 10^ ions per cubic centimeter at a distance of 0.5 meter. While Tammet has indicated that the generation of nitrogen oxides and ozone was negligible in this unit, these factors have been a major problem with all corona generators as detailed by Skilling and Beckett (1953).…”

“…The construction of thermionic generators has been described by Hicks (1951Hicks ( , 1952a. Skilling and Beckett (1953) have described both thermionic generators and those using a radioactive polonium source in detail.…”