What is PM2.5? Hazards and protection against small particles
The air we breathe is not fresh air. Because there are small particles such as PM2.5 including germs And various contaminants Many more invisible Usually, our noses have nose hairs that help filter dust particles. Before entering the respiratory system Causing the body to not be affected much But nowadays in Thailand there is an increasingly serious problem of air pollution. Especially PM2.5, which the nose cannot filter dust from entering the body. Causing the need to find a way to avoid and prevent This can be very dangerous and harmful to your health later.
What is PM2.5?
PM2.5 is a fine particle of no more than 2.5 microns, equivalent to approximately one 25th of the diameter of a human hair. So small that the human nose hairs that filter dust cannot be filtered. It spreads into the respiratory tract, bloodstream and into other ages in the body. Dust carries other substances such as cadmium, mercury, heavy metals and other carcinogens.
Causes of PM2.5 dust.
Particles up to 2.5 microns (PM2.5) come from two major sources:
Direct source is open burning. Transportation, Electricity Generation, Manufacturing Industry.
The formation of other gases in the atmosphere, especially sulfur dioxide (SO2) and nitrogen oxides (NOx), among other toxic substances. That are all harmful to the human body such as mercury (Hg), cadmium (Cd), arsenic (As) or polycyclic aromatic hydrocarbons (PAHs).
Dangers and health effects from PM2.5
The body of a healthy person when exposed to PM2.5 dust may not have an impact in the early stages. But if you have been consecutive for a long time Or accumulate in the body Finally. It will cause the body’s symptoms later. Which can be divided into physical effects And skin effects.
- Health effects
- Coughing, sneezing, or allergies
- People who are already allergic to dust Will be more stimulated to cause symptoms
- Chronic respiratory disease
- Chronic cardiovascular disease
- Chronic lung disease Or lung cancer
- Skin effect
- Has an itchy rash on the body
- have a burning pain Irritated
- Hives If it is very heavy, hives may occur in the face, folds, groin.
- Hurt skin cells Weaken the skin Easily wrinkled
Severity level of PM2.5
The World Health Organization (WHO) classifies PM2.5 dust as a class 1 carcinogen. Combined with the World Bank report that Thailand has killed as many as 50,000 air pollution, affecting the economy. Including the state’s expenses incurred in connection with the medical expenses of patients from this air pollution.
Guidelines for preventing PM2.5 dust
Wear a dust mask. The mask that can prevent PM2.5 dust is good and effective is the N95 mask, which costs more than a mask. And some people may wear it, it may feel uncomfortable. Because breathing is more difficult than usual
If the N95 mask . It may be possible to use a mask with a 3-layer filter, which is often written on the product as being able to prevent PM2.5 or if it cannot be found. You can use a regular mask, but can be worn over two layers, or stack a handkerchief or tissue inside.
Try to avoid all outdoor activities when the air quality is at levels dangerous to health. If necessary to wear a dust mask when outdoors.
Use an air purifier. This is because the inside of the building is not always safe from PM2.5. Especially in buildings with doors that are often opened and closed due to the large number of people entering and exiting. Therefore, an air purifier is essential in order to breathe comfortably indoors.