Environment in Chinese cities has entered a period of high incidence of haze, and people are beginning to gradually experience the "pain of breathing." Many people assume that during haze weather, indoor air will be better than outdoor air, and that as long as doors and windows are closed, they will not be affected by haze.

Scientists at the research institute have found that if there is smoking or cooking indoors, indoor PM2.5 levels will also soar, and the concentration is not necessarily lower than outdoors. Measurements show that without opening windows and in the absence of smoking or cooking, the indoor PM2.5 concentration is generally about 30% to 40% lower than the outdoor concentration. For example, if the outdoors is around 500, the indoors will generally be around 300-350. However, another set of testing data shows that the indoor PM2.5 concentration in some households is even higher than outdoors. In one household with doors and windows closed for many days, instruments measured an outdoor PM2.5 concentration of 230μg/m3, while the indoors reached 474μg/m3. Therefore, it cannot be simply stated that indoor air is necessarily better than outdoor air during haze days.

The Luftmy editor has learned that when haze is severe, incorrect window ventilation will cause indoor PM2.5 concentrations to rise rapidly. At the same time, keeping doors and windows tightly closed does not mean isolating air flow; tiny PM2.5 particles can still find their way into the room. Additionally, people returning home from outside carry various fine particles and microorganisms. Experts suggest that when outdoor air pollution is severe, one can plant more green plants with relatively strong adsorption capacity on balconies, terraces, and indoors. Try to choose broad-leafed plants because those with large leaf areas and many stomata can not only adsorb PM2.5 but also increase the oxygen content in the air, such as Pothos, Aglaonema, Snake Plant, and Ivy. Since the plant surface contains a layer of adsorptive mucus, this mucus has a strong adsorption function for tiny particles. Furthermore, through photosynthesis during the growth process, plants can also adsorb a small amount of PM2.5. Therefore, using natural methods like green plants to help mitigate indoor PM2.5 pollution is effective, easy, and adds a touch of green to the home.

Facing the increasingly severe environment, how should everyone correctly purify indoor air, effectively inhibit indoor PM2.5 pollution, and create a healthy indoor environment?

1. Open windows for ventilation;

2. Grow green plants;

3. Smoke less;

4. Maintain indoor cleanliness and personal hygiene;

5. Replace doors and windows with better sealing.

At the same time, Air Purifier equipment can be used to purify indoor air and bring indoor PM2.5 concentrations back to normal levels. The PM2.5 concentration sensors used in air purifiers include Luftmy's laser dust sensor LD16 and infrared dust sensor GDS06, among others.