Is the content of negative ions in the air as high as possible?

Medical research shows that the concentration of negative oxygen ions is positively correlated with human health, that is, the higher the content, the better the human health. When the number of negative oxygen ions in the air per cubic centimeter exceeds 20,000, it will have the effect of treating diseases. Among them, negative oxygen ions with smaller particle size are more likely to enter the blood-brain barrier of human body and have an impact on human body, that is to say, negative oxygen ions with smaller particle size have the best impact on human body, and negative ions in nature are mainly negative oxygen ions with smaller particle size. "Ecological negative ion generation technology with negative ion system and pollutant collection system" can generate high-concentration ecological negative ions.