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The transfer of small negative atmospheric ions in air and from air to water has been studied. The mean lifetime of ions was experimentally obtained from the concentration distribution of ions in a round free jet. It was about 30 s in relative humidity of 63%–75%, indicating that ions generated at one source in a room could not be homogeneously spread throughout the room by conventional convective flow of air. Rapid dissipation of the ions occurs during diffusion in stationary air. However, most of the ions that enter the mouth of a human body reach the lungs, because of the high convective velocity of breathing. The irradiation of ions onto water decreased the electric conductivity of the water. This finding suggests that the transfer of ions into water in a human body breaks the network of H2O molecules and enhances the formation of hydrogen bonds between a biopolymer and water.

Transfer of small negative atmospheric ions