Research on the Classification and Evaluation Standards of General Air Negative Ion Concentration
In order to meet the growing demand for a better life,there is an urgent need for a universal classifica-tion and evaluation standard for air negative ion concentration,which can unify the classification or evaluation of air negative ion conditions in various ranges or environments,and provide practical assessment or reference for the construction of a beautiful China and ecological civilization;Based on the comprehensive classification or e-valuation standards of various air negative ion concentrations at home and abroad,the paper proposes a universal air negative ion concentration classification and evaluation standard that includes multiple indicators such as con-centration area,concentration level,air cleanliness,air freshness,health level,and comprehensive level,combined with practice.The standard is applied to classify and evaluate the air negative ion status of some common produc-tion and living environments.
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