Rehabilitation and health care: Research shows that the concentration of negative oxygen ions is positively related to human health. When the number of negative oxygen ions in the air per cubic centimeter exceeds 20,000, it will have a health care effect on the body.
Air optimization: Eco-grade negative ions can actively capture dust particles, make them coagulate and precipitate, and effectively remove dust below 2.5 microns (PM2.5) in the air, even 1 micron particles. The function of negative ions can effectively reduce the harm of PM2.5 to human health.
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Anions: Ions with one or more negative charges are called "anions", also called "anions".
Anion (alias negative ion) refers to an atom that gets one or several electrons due to external action, so that the outermost electron number reaches a stable structure. The smaller the atomic radius, the stronger the ability to obtain electrons and the weaker the metallicity. Anions are negatively charged ions, and nuclear charge number = proton number.
Negative ions can be divided into large, medium and small ions according to their mobility. Small ions, also known as light ions, are beneficial to human body and have good biological activity. This entry introduces anions, light anions, functions of anions, anionic polyacrylamide (APAM) and basic information of anion experiments.
Baidu encyclopedia _ negative ions