Experts do not advocate that negative ions have the function of air purifier. In a polluted environment, negative ions will charge particles in the air, thus causing heavy ion pollution. Charged particles will adhere to the wall, showing the phenomenon of black wall. When charged, fine particles will condense into large particles, which will pass through people's breathing zone through gravity and affect people's health.
In the past, some foreign countries used negative ions to purify the air, and some added negative ions to air purifiers. At present, air purifiers in developed countries have no additional negative ion function.
The energy of negative ion purification technology is relatively small, which plays an auxiliary purification role and is difficult to undertake the purification task, which is the icing on the cake. There is no doubt that negative ions will be accompanied by the production of ozone, which has been fully explained by relevant standards. At present, the medical community has not yet determined the efficacy of negative ions, and believes that the purified products that generate negative ions through ionization are lifeless.
Extended data:
Negative ions are conceptual hype, mainly to divert consumers' attention. According to GB/T 188 1, the purification efficiency of negative ion air purifier is not brought by negative ions, but by HEPA filter. The purpose of the purifier is to improve air quality. No matter what purification method, the result is the most important. Too much emphasis on purification methods is intentional hype.
Some new empty brands entering the market are still promoting negative ions as a selling point. In this regard, many experts pointed out to reporters that it is not surprising that many manufacturers still use this as a selling point because of its low cost and large profit margin.
People's Network-The market share has fallen sharply. The concept of negative ions is getting colder and colder.