The artificially generated negative ion depends on whether it is a small particle size negative ion, because the book Environmental Health and Negative Oxygen Ions written by Professor Lin Jinming, a doctoral supervisor in Tsinghua University and an expert in Chinese Academy of Sciences, has such a definition: positive and negative ions in the air can be divided into large, medium and small ions according to their mobility. The ion mobility greater than 0.4cm2/(v s) is small ion, the ion mobility less than 0.04cm2/(v s) is large ion, and the middle plasma is in between. Charged atomic groups or molecular groups close to molecular size belong to small air ions. These small air ions move fast, collide with each other in the atmosphere, and constantly gather to form large ions or middle ions. Only small ions or small ion groups can enter the body. Small negative oxygen ions or small negative oxygen ion groups have good biological activity.
Among them, small ions are small particle negative ions, which are equivalent to air negative ions in nature. Some data call them ecological negative ions, which have the characteristics of high activity and long migration distance. Medical research shows that small particles of negative ions have medical and health care effects on human body. Because only negative ions with small particle size can easily penetrate the blood-brain barrier of human body and exert their biological effects.
At present, the world-leading patented technology of negative ion converter and nano-fullerene negative ion releaser is adopted to produce ecological negative oxygen ions with small particle size, high activity and long migration distance, with high purity and no derivatives such as ozone and positive ions.