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Air Quality Information

What is Formaldehyde and the impact of formaldehyde on human health?

Formaldehyde is a colorless, strong-smelling, water-soluble gas.  It is commonly found in chemicals, particle board, household products, glues, permanent press fabrics, paper product coatings, fiberboard and plywood, and also widely used as an industrial fungicide, germicide and disinfectant.

Formaldehyde exists in gas form in room temperature, but is more commonly found in the form of aqueous solutions (“formalin”).   100% formalin consists of a saturated solution of formaldehyde (37% by mass) in water, with a boiling point of 19℃.  Therefore, formaldehyde is highly evaporative at room temperature. 

Formaldehyde is widely known as toxic, human cancer-inducing and is a form of mutagenic substance, as classified by The World Health Organization.  Studies have shown that formaldehyde has strong carcinogenic and tumor-inducing effect.  The impact of formaldehyde on human health include irritation to nose, eye and throat, allergies, lung and liver dysfunction and immune dysfunction and so on.  When formaldehyde content reaches 0.06 – 0.07mg/m3 in each cubic meter in air, children will likely suffer minor asthma attack.  At 0.1mg/m3, one will suffer from smell irritation and discomfort such as dizziness, headache or insomnia; at 0.5mg/m3, it can cause eye irritation; at 0.6mg/m3, it can cause throat irritation.  A higher formaldehyde concentration may cause nausea and vomiting, coughing and chest tightness, wheezing or even pulmonary edema.   When up to 30mg/m3, it will cause death immediately.


What is Nano-photocatalyst?

A nanometer, nm, is just a unit of length; 1nm equals to 1,000,000,000m, approximately equals to the diameter of 1/80,000 of hair.

Nanotechnology means a technology that makes a size of material less than 100nm and hence such material performs a particular function while reducing material and energy consumption, waste reduction and environmental damage.

Photocatalyst is the substance which can modify the rate of chemical reaction using light irradiation. Titanium dioxide is the main ingredient of Photocatalyst.  As long as spraying the surface of the object, such as: walls, toys, furniture or car, etc.,  Photocatalyst can produce deodorizing, antimicrobial, anti-molding, self-cleaning effect. This series of reactions is known as redox reactions.  When photocatalyst coating on the object, it can decompose odor molecules and bacteria, viruses and other microorganisms.  It purifies indoor environment and makes air fresh.

The main ingredient of photocatalyst is Titanium Dioxide. Titanium Dioxide was controlled in size of less than 7nm via nanotechnology, then their surface area to volume ratio and light penetration rate will be exponentially increased.  As a result, the photocatalytic rate will be much faster.

Nano-photocatalyst which is applied by E & K Air Purify Services Ltd. can damage cell membranes resulting in the death of bacteria.  Also it solidifies the virus protein, inhibits the activity of the virus, and captures and kills bacteria or allergens in air up to 99.997%, which is much higher than the ozone or negative ions and several times more than bleach.