Respiratory Exhaust
When people breathe, they need to inhale air, and oxygen is taken up in the alveoli, and then they expel some toxic and harmful gases containing high concentrations of carbon dioxide and others. Studies have found that human lungs can expel more than 20 kinds of toxic substances, of which more than 10 kinds contain volatile toxins. Therefore, people in crowded, airless rooms, often feel dizzy, breathing difficulties, serious chest tightness, sweating, nausea, etc., symptoms. In addition, patients suffering from respiratory infectious diseases can spread pathogens to others through exhalation, sneezing, coughing, sputum and nasal mucus.
Second-hand smoke
When tobacco is burned, it produces nicotine, tar, cyanohydrogen acid, etc. Nicotine excites nerves, constricts blood vessels, raises blood pressure and reduces blood supply to tissues, and increases oxygen consumption by increasing heart rate. Tar contains a variety of organic compounds, which contain trace amounts of benzo(a)pyrene, benzanthrene and other substances, benzo(a)pyrene has a strong carcinogenic effect. Information published by the World Health Organization shows that 90/100 of lung cancer deaths in men under 65 years of age, 75/100 of deaths from chronic bronchitis and emphysema are due to smoking.
Interior decoration
With the gradual change in lifestyle, people have higher requirements for the quality of their home environment and home decoration has become fashionable. However, people often overlook the health and safety implications of a decorated living environment.
Household fuel
In many cities, piped gas is basically popularized, and the rest use LPG. Although LPG reduces the sulfur and smoke dust of burning coal, but its main component is propane and other hydrocarbons, improper use will occur poisoning accidents. These fuels are burned to consume indoor oxygen and emit toxic gases and particles such as carbon monoxide, carbon dioxide, sulfur dioxide, nitrogen oxides, aldehydes, benzopyrene and soot microscopic dust particles, which are irritating to the nervous system, conjunctiva and respiratory mucosa, and potentially carcinogenic.
Cooking oil fumes
When the oil temperature is around 110℃, the oil surface is calm and no smoke comes out; when it reaches 130℃, the smell of raw oil is removed, but the oxidation of oleic acid occurs, generating a series of volatile chemicals, fat oxidation, fatty acids and fat-soluble vitamins contained in the oil are destroyed to different degrees, and proteins become polymer; when the temperature of the frying pan reaches 150℃ When the temperature of the frying pan reaches 150 ℃, there is smoke; above 200 ℃, there is more smoke, because the glycerol in the oil pyrolysis loss of water, there is a pungent taste of acrolein substances escape, will make people have a dry throat, astringent eyes, itchy nose and increased secretions, some people even as drunkenness, some people with allergic asthma or emphysema can induce shortness of breath and cough. The higher the temperature of the oil, the more complex the products of decomposition, when the oil in the pot is burned to fire, the temperature exceeds 300 ℃, in addition to producing acrolein, but also produce a kind of diene condensate, can lead to chronic respiratory inflammation, and make cell mutations carcinogenic. In our daily life, the dark brown viscous liquid in the oil collection cup of the range hood contains such harmful cleavage products to human body.
Post time: Aug-31-2022