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Negative Air Ions (NAI)
Known as the “vitamin in the air”
What are negative oxygen ions?
Negative air ions are often referred to as “vitamins in the air.” They are charged particulates suspended in the atmosphere, much like vitamins in food. These ions enter the body through the mouth, nose, or skin, helping to restore the body’s natural state of balance. It is generally believed that the concentration of negative air ions in the air serves as an indicator of how fresh and clean the air is.
What health benefits do negative oxygen ions offer to the human body?
It emits a high concentration of negative oxygen ions, which help improve respiration, relieve fatigue, promote blood circulation, provide antioxidant and anti-aging benefits, eliminate static electricity, inhibit bacterial growth, exert antiviral effects, deodorize and remove unpleasant odors, and enhance thermal insulation. Long-term use can boost the body’s immune function and contribute to overall health.
How are negative oxygen ions generated?
It is the electrons released when atmospheric gases are ionized under the influence of ultraviolet radiation, cosmic rays, radioactive substances, thunderstorms, and other factors, which promptly combine with neutral molecules in the air to form negative ions.
Under the impact of the falling water, molecular dissociation also generates a large number of negative ions.
The tip discharge of plants in the forest and the photoelectric effect generated by photosynthesis in green plants also produce negative ions.
Negative ions are also generated in certain crustal rocks. That’s why forests, waterfalls, and seashores—where negative-ion concentrations are high—feel especially soothing.
The Generation Principle of Natural Negative Ions
Negative ions are invisible, intangible, and ubiquitous. When molecules or atoms in the air lose or gain electrons, they become charged particles known as ions: those with a positive charge are called positive ions, while those with a negative charge are called negative ions. Negative ions are negatively charged gaseous ions present in the air; under the influence of high voltage or intense radiation, air molecules become ionized, and most of the resulting free electrons are captured by oxygen. For this reason, negative ions in the air are often collectively referred to as negative oxygen ions. Simply put, any gas molecule in the air that carries a negative charge is a negative ion. Negative ions can purify the air and improve the ecological environment, which is why they are also known as “vitamins in the air.”
Generation of Negative-Ion Fibers
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Negative-ion fibers or textiles are produced through blended spinning technology, in which trace amounts of radioactive rare-earth minerals or natural minerals are incorporated into textile materials, endowing them with the ability to generate negative ions. The faint radiation emitted by these rare-earth minerals—rich in natural neodymium and uranium—continuously ionizes airborne particles, thereby generating negative ions. In addition, the intrinsic electromagnetic field properties of natural minerals such as tourmaline and opal are also harnessed. These minerals are cyclic borosilicate compounds containing elements like aluminum, sodium, iron, magnesium, and lithium, and they exhibit both pyroelectric and piezoelectric effects. When the mineral crystals experience slight changes in temperature or pressure, a potential difference (voltage) is established within the crystal. This energy ionizes the surrounding air, causing the released electrons to combine with nearby water and oxygen molecules, transforming them into negatively charged ions that remain suspended in the air.
Our independently developed negative-ion material is a cutting-edge, multifunctional material that integrates negative-ion emission, far-infrared radiation, antibacterial and bacteriostatic properties, antiviral activity, and deodorization. It boasts high negative-ion concentration, excellent wash resistance, non-radioactivity, and long-lasting, stable performance.
National Standard for Negative Oxygen Ion Concentration
China’s national standards for negative oxygen ion concentration encompass specific provisions across various competent authorities and application scenarios, which can be broadly categorized into three types: recommended values from international organizations, domestic meteorological classification standards, and indoor air quality requirements.
01.
World Health Organization (WHO) Recommended Standards
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02.
Classification Standards for Ecological Environment of the China Meteorological Administration
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03.
National Standard for Indoor Air Quality in China
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I. World Health Organization (WHO) Recommended Standards
The World Health Organization has issued clear recommendations regarding the concentration of negative air ions in fresh air:
Basic requirement: The concentration of negative oxygen ions in the air must reach 1,000–1,500 per cubic centimeter to be considered “fresh air.”
High-Quality Air Standard: When the concentration of ions in the air exceeds 2,000 per cubic centimeter, the air is classified as “extremely fresh,” offering significant benefits for human health and environmental comfort.
II. Ecological Environment Classification Standards of the China Meteorological Administration
The China Meteorological Administration has established a grading standard for the concentration of negative air ions in natural environments such as forests and scenic areas:
Level 1 (Very Fresh):Ion concentration ≥ 1,200 ions per cubic centimeter—ideal for extended outdoor activities.
Level 2 (relatively new):Concentration ranges from 500 to 1,200 ions per cubic centimeter—air quality is good but slightly below optimal levels.
Level 3 (Average):Concentration ranges from 100 to 500 ions per cubic centimeter—air pollution is not noticeable, but the purification capacity is limited.
Level 4 (Not Fresh Enough):Concentration ≤ 100 ions per cubic centimeter—there may be air pollution risks that require attention.
III. National Standards for Indoor Air Quality in China
The “Indoor Air Quality Standard (GB/T 18883-2002)” sets forth requirements for the concentration of negative oxygen ions in residential and workplace environments:
Daytime standard:Indoor ion concentrations should be ≥600 ions per cubic centimeter to ensure respiratory health during daily activities.
Nighttime standard:During rest, the ion concentration in the air should be ≥400 ions per cubic centimeter to meet the body’s metabolic needs.
Gosenda is proud to introduce its new negative-ion textile collection, leveraging cutting-edge technology to usher in a全新 experience of healthy living. This innovative material boasts a negative oxygen ion release rate of over 6,000 ions per cubic centimeter—on par with the air quality of a natural oxygen-rich environment. Its far-infrared radiation rate reaches 0.89, which helps promote blood circulation and activate cellular functions. In addition, the fabric delivers a 99% antibacterial efficacy and outstanding deodorizing performance, effectively inhibiting bacterial growth and odor formation at the source. Moreover, its thermal insulation is enhanced by 2–3 degrees, ensuring superior warmth through scientifically advanced technology.
In addition, this material offers a range of health benefits, including antioxidant and anti-aging effects, improved respiratory function, and fatigue relief—providing all-round protection for your physical and mental well-being.
Adhering to the principles of safety and practicality, this product boasts a high negative-ion concentration, excellent wash resistance, zero radioactivity, and long-lasting performance—ensuring reliable use and peace of mind.
Personal care that truly protects—ultimate luxury that restores the skin to its natural state.
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