1, for eating fungus, pig blood, pears, etc. circulating in the society, it can remove dust from the lungs; It has long been proved in medicine that the above-mentioned dietotherapy methods have no practical effect, which is a misunderstanding that some foods in Chinese medicine theory have the function of "clearing lung". The so-called "clearing lung" in TCM refers to the effect of clearing cough, removing phlegm and "moistening lung";
2. The current dust mask must comply with the GB2626-2006 standard. Dust masks are divided into KN 100, KN95 and KN90. Among them, KN 100 can achieve nearly100% (more than 99.97%) protective effect on ultrafine dust. If the granularity is large, you can choose KN95 grade. The protective effect depends on two aspects. One is the filtration efficiency of cotton filter. The second is the air leakage rate after the mask is matched with the face.
The way to clean dust: scientific selection of dust masks certified by GB2626-2006 standard is helpful to prevent lung injury.
(1) Select the compound semi-mask type: disposable masks are not suitable for long-term or occupational protection due to high air leakage rate;
(2) Choose KN 100 grade: low protection rate in high dust environment will lead to physical injury;
(3) Choose a mask made of silica gel, which has a relatively long service life and is soft and comfortable. Wearing it for a long time is not easy to cause allergic reactions; The mask with high hardness is easy to cause facial indentation;
(4) It is extremely important that the masks are divided into different sizes. It is not recommended to buy those so-called universal models of masks. Different people are different in height, size and face shape. Universal models certainly cannot fit closely with everyone's face and are prone to air leakage.
(5) There are two kinds of masks covering the nose and mouth, covering the nose and mouth and the mandible. It is recommended to use the latter, which is relatively comfortable;
(6) It is recommended to choose a mask with smooth breathing. Some masks are designed with double filter cotton and double filter surfaces, which can breathe smoothly and have a long service life.