Car exhaust, a "hidden killer" that threatens health
Joint law enforcement to strengthen automotive exhaust management
In order to steadily promote the prevention and control of air pollution throughout the region and improve the quality of ambient air, on June 23, Zhejiang Keqiao District Environmental Protection Bureau, Public Security Branch, and Market Supervision and Administration Department jointly launched a special law enforcement inspection of motor vehicle environmental protection compliance.
"Please stop the car and accept the environmental protection exhaust test." At 9 o'clock in the morning on the Qiantao Highway Shaoxing Junma Comprehensive Performance Test Co., Ltd. Qixian Station, law enforcement officers stopped a blue van and sent The vehicle was guided into the inspection station. The staff picked up a long black leather tube, one end was connected to the instrument in the inspection car, and the other was connected to the exhaust pipe of the truck. After about one minute, the large screen of the test station showed that the exhaust gas test was qualified.
"Today we are mainly inspecting heavy-duty diesel vehicles, focusing on checking the installation and use of exhaust emission control devices, including whether the exhaust diagnostic system is damaged, whether urea is added to the vehicle, etc." said Hu Linyong, a law enforcement member of the District Environmental Protection Bureau. Motor vehicles Exhaust emissions are dynamic, and some vehicles are indeed qualified during testing, but if they cannot be maintained in a timely manner, they may be unqualified during spot checks. To this end, they will increase environmental protection road inspection efforts to eliminate similar situations as much as possible.
Subsequently, law enforcement officers randomly sampled a red heavy truck and a green muck transporter, and the results showed that the exhaust gas tests were qualified.
At the same time, another group of inspection teams led by the District Market Supervision and Administration Bureau randomly selected whether the vehicles sold in the 4S stores in the urban area meet the emission standards, and whether they fulfilled the requirements of informing the purchasers of the implementation of the national V emission standards. Spot check. Law enforcement officials visited three 4S stores including FAW Pentium, Toyota, and Mercedes-Benz, and conducted spot checks on motor vehicles for sale.
In addition, law enforcement officers also checked whether the appearance inspection of the inspection agency of the exhaust gas detection station is in place, whether the vehicle information entry is complete, whether the report has been audited in accordance with the regulations, and whether the non-conformance rate of the test report has exceeded the standard. .
It is understood that the relevant departments of our district organize several special actions each year to strengthen the supervision and inspection of environmental protection standards of motor vehicles and investigate and deal with illegal acts, to ensure that newly-produced motor vehicles in the field of circulation meet the national V emission standards, and at the same time increase the promotion of automobile exhaust pollution prevention knowledge We will further create a good regulatory environment for the environmental protection of motor vehicles and ensure the effective control of vehicle exhaust.
Car exhaust pollutants are more harmful
Automobile exhaust contains hundreds of different compounds, among which pollutants include solid suspended particulates, carbon monoxide, carbon dioxide, hydrocarbons, nitrogen oxides, lead and sulfur oxides. According to relevant media reports, more than 60% of traffic police and taxi drivers in our country suffer from respiratory diseases of varying degrees, and vehicle exhaust is like an "invisible killer" that is threatening the lives and health of more and more people.
Solid suspended particles are one of the main pollutants in automobile exhaust, and the composition is very complicated. PM2.5, which is well known in recent years, is one of them. According to reports, solid suspended particles can enter the human lungs with breathing, and they can stay in different parts of the respiratory tract by collision, diffusion, and deposition, causing respiratory diseases. Long-term contact of the skin and eyes with solid suspended particles can also block the skin's hair follicles and sweat glands, causing dermatitis and conjunctivitis.
Nitrogen oxides and hydrocarbons in the exhaust of motor vehicles are exposed to strong solar ultraviolet rays in the atmospheric environment, and a complex photochemical reaction occurs, which produces a kind of irritating light blue smoke, commonly known as photochemical smoke, which contains Ozone, aldehydes, nitrates and many other complex compounds. The most prominent harm of this pollutant to the human body is irritation of the eyes and upper respiratory tract mucosa, causing eye swelling and sore throat.
In addition, lead may be present in automobile exhaust, which is a toxic heavy metal element. It is understood that excessive levels of lead in the human body can cause cardiovascular diseases and affect the functions of the vital organs such as the liver and kidneys and the nervous system. Due to the large proportion of lead and dust, which usually accumulates in the air closer to the ground, it poses the greatest threat to children.
Walking exercise should be as far away as possible from the road
As night fell, about three or two friends jogged around a certain area of the city, which became a popular sport for many young people. Some uncles who are keen on dancing square dances will choose to work out in the underground garage when the weather is bad outdoors. Some parents push strollers after meals and take their babies for a walk ... their purpose was to exercise, but the venue they chose is likely to be harmed by the exhaust of cars.
"The pollutants from automobile exhaust are mainly concentrated at a low level about one meter above the ground, which is near the human breathing zone, which has potential long-term harm to human health." Xie Haifang, a traditional Chinese medical doctor in the central hospital, is concerned with respiratory diseases. An expert, she said, people breathe faster during the exercise and heartbeat, it is easier to inhale harmful substances. Therefore, jogging or walking should be as far away from the road as possible to reduce the harm from car exhaust.
"Compared with highways, underground garages are relatively closed, air mobility is poor, and the concentration of pollutants in car exhaust is not easy to dissipate, so exercising in underground garages is even more undesirable." Xie Haifang said that summer citizens can choose to exercise in the morning or evening When the weather is cooler, choose to do it in a park or green space away from the road, the exercise effect will be more effective.
- Principle of passive regeneration of diesel particulate trap
- Use of diesel particulate trap
- DPF is blocked and needs regeneration
- Qingdao Blue Marine Product Technology Route
- How ceramic filter carriers work
- To control air pollution, you must first treat car exhaust
- Ministry of Environmental Protection: Motor vehicle pollution has become an important source of air pollution
- Car exhaust, a "hidden killer" that threatens health
- Ministry of Environmental Protection: increase vehicle emissions control