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What are the sources of indoor PM2.5?How to choose an air purifier

Update: 2020-08-20 14:57 Source: LUFTMY Reading: ↻ News

I believe that we all know the harm of PM2.5 on human body. In haze days, many people choose to stay at home. However, through PM2.5 sensor monitoring, it is found that sometimes the concentration of PM2.5 in the room is not lower than that outside, and PM2.5 can also be produced in daily life.How to choose an air purifier to improve your indoor air?

What are the sources of indoor PM2.5?How to choose an air purifier

The three main sources of PM2.5 are indoor decoration, smoking and cooking fume. In addition, there are air conditioners for heating, dust from cleaning, pet dander and so on.

Indoor decoration

The paint, marble, plywood, particleboard, interior wall paint, adhesive and other materials used in the decoration process all contain organic volatiles such as formaldehyde, benzene, ammonia, toluene and so on, which will release a large number of harmful gases, and it is a continuous release, which may lead to the production of PM2.5 particles.At the same time, in the process of interior decoration, a large number of partitions will be generated, which will pollute the indoor air and improve the indoor CONCENTRATION of PM2.5.


China has more than 300 million smokers, more than any other country in the world, with more than one million people dying every year from smoking-related diseases, according to the Chinese Center for Disease Control and Prevention. That means one person dies on cigarettes every 30 seconds.The smoke from smoking not only does harm to people's health, but also causes air pollution.When smoking indoors, the concentration of PM2.5 rises significantly.In addition to the well-known nicotine and carbon monoxide, cigarettes produce many tiny particles when they are not completely burned, most of which are only about 1 micron in diameter and fall into the PM2.5 category.

Cooking oil fume

In the cooking process, cooking oil and food under high temperature conditions, will occur thermal decomposition or pyrolysis, forming a mixture of gas, liquid and solid three kinds of organic form, namely lampblack.According to the different forms, the mixture of liquid and solid particles is called oil mist. The particle size is between 0.01 and 10 microns, which fully meets the standard of PM2.5 particles.The gaseous part is discharged as volatile organic compounds (VOCs).After oil mist is discharged, PM2.5 can be directly formed, while VOCs can also form PM2.5 through chemical reactions in the air.In addition, when coal, liquefied natural gas or natural gas is burned, sulfur and hydrogen oxides are also important sources of PM2.5 pollutants.

How to choose an air purifier

Indoor air quality is mainly improved by air purifiers, fresh air systems and other equipment. How to choose an air purifier?LUFTMY recommends the use of an air purifier with a laser-type PM2.5 sensor module. Such a dust sensor module adopts the principle of laser scattering to achieve high-precision measurement, and more timely monitoring of indoor PM2.5 concentration to remind the air purifier to work in a timely manner to purify indoor air.

LD16 Laser PM2.5 Dust Sensor Model
LD16 Laser PM2.5 Dust Sensor Model

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