How are negative oxygen ions generated in nature?

The free electrons generated by the ionization of air are captured by the oxygen molecules that make up the majority of the air, forming negative oxygen ions, or negative air ions.

Specifically: air is a mixture of gases composed of oxygen, nitrogen, water vapor and carbon dioxide. Under normal circumstances, the positive and negative charges within the gas molecules and atoms are equal and neutral. But in the natural environment by cosmic rays, ultraviolet rays, thunder, waterfalls, storms, fountains and forests in the treetop swing, wave impact rocks, rain and other energy, gas molecules in some of the outer layer of the atom's electrons will be out of orbit, become free electrons, is negatively polarized; and the loss of electrons of the atom is positively polarized, this phenomenon is the above said "air Ionization of air". The free electrons will be combined with other neutral molecules, so that the gas molecules with excess electrons are negatively charged.

Among the various gas molecules that make up the air, oxygen and carbon dioxide molecules have a greater ability to "capture" free electrons, and oxygen accounts for a larger proportion of the air, so most of the free electrons generated by the ionization of air are "captured" by oxygen molecules, forming negative oxygen ions. Formation of negative oxygen ions. This is the forest, waterfalls, the sea and other natural environments we feel the air is particularly fresh, is because of the increase in negative ions in the air, the higher the concentration of negative oxygen ions in the air, the better the air quality.

Negative ions can also be generated artificially, domestic and foreign negative ions are usually used in the generation of technology: (1) ultraviolet irradiation; (2) thermal ionization emission method; (3) the use of high-pressure water jet method; (4) the charge separation method; (5) the electron release method; (6) the radioactive material radiation method; (7) corona discharge method . Although these negative ion generators can change the concentration of negative ions to a certain extent, but at the same time have brought a lot of side effects, such as corona discharge method, which produces a high concentration of negative ions, accompanied by many side effects, such as the production of a large number of odors, improve the concentration of ozone and nitrogen oxides, easy to induce arteriosclerosis and cancer, etc.; and the use of electricity as a driving force, resulting in a large amount of wasted energy, the instrument's life expectancy is short

In 1989, the Japanese scholar Kubo discovered and proposed that Tourmaline (also called Tomalin, Tourmaline) has a permanent spontaneous polarization effect. Tourmaline crystals have a potential difference, with a permanent charge, and at the same time has the characteristics of piezoelectric effect and thermoelectric effect, without any energy, with the release of high concentration, small particle size anion, emission of far infrared rays, shielding of electromagnetic radiation, treatment of odors and sterilization and water treatment, such as the excellent environmental functional attributes. It does not produce ozone, does not contain radioactive substances, and will not have any impact on human body and the environment. Its lifespan is the same as the permanent magnet material, so it is called eco-negative ions by scientists