The price of oil doesn't drop strangely! Talk about the strange phenomenon caused by hazy days

PConline talked into the fall and winter seasons, and the northern region was repeatedly plagued by haze. Breathing problems once again became hot in the city. Air and water are the natural resources on which human beings rely, and the quality of air is closely related to our lives. I remember that Zhong Nanshan, an academician of the Chinese Academy of Engineering, mentioned that PM2.5 particles of this size can directly enter the alveoli, affecting both the cardiovascular and nervous systems. In fact, it is not difficult for attentive netizens to discover that there are certain rules in the time and place where smog occurs. Then what strange phenomenon occurs in the fog?

Some time ago, Beijing issued a red haze warning. A number of experts concluded that the conclusions were due to automobile exhaust, industrial emissions, construction dust, and waste incineration. In the fog, "assistance" was also found. Due to the heavy snowfall experienced in North China, snowmelt ablation causes the surface humidity to become saturated, the temperature decreases, and the mid-level atmosphere significantly warms up over the same period, resulting in extreme adverse weather conditions in North China with high humidity, low wind speed, and strong temperature inversion. Pollution continued to accumulate, resulting in a large area of ​​serious regional pollution.

The most frequent haze in winter

In winter, it is easy to induce hazy weather, mainly because the surface of the ground cools down at night, and it is easy for the atmosphere to appear “inverse temperature” at low altitude. Under certain weather conditions, the atmospheric structure over the ground will have an anomalous phenomenon that the air temperature rises with height. It is called “inversion temperature”, and the atmosphere where temperature inversion occurs is called “inversion layer”. It is like a thick layer of quilt over the sky, the upper and lower layers of air to reduce the flow of air pollutants near the ground floor "nowhere else to go", but had no place to move, more and more, more and more air pollution .

The frequency of occurrence of foggy days in winter is more. From a meteorological point of view, when there is fog, it often means that the atmosphere is relatively stable, and a stable atmosphere can easily cause the accumulation of pollutants, so fog days are usually accompanied by light or heavy. Pollution situation. The low-visibility weather that occurs most of the time is actually caused by the mixing of fog and haze. In the morning, when the relative humidity is high, it is mostly fog. During the day, the temperature rises and the humidity drops and turns into haze. In particular, due to the influence of heating, more pollutants are emitted in winter, which is also an important reason for the occurrence of haze days in winter.

Ashes are more scary than fog

Severe haze will occur in the northern regions, and these haze will seriously affect our physical health. In fact, in addition to smog, ash is a real fear. Ash weather is defined as a collection of tiny dust, soot, or salt particles in the suspended atmosphere, which makes the air turbid and reduces visibility to less than 10 kilometers.

Ashes are more harmful to the human body

The composition of the ashes is very complex, including hundreds of atmospheric particles. Among them, harmful human health is mainly aerosol particles with a diameter of less than 10 microns. If the pollution is mainly car exhaust, volatile nitrogen oxides emitted from factories, exhaust gas of burning petroleum products, etc., it can directly enter and adhere to the human body. Upper and lower respiratory tracts and lobes. Since most of the atmospheric aerosols in the ash can be inhaled by the human respiratory tract, especially submicron particles will be deposited in the upper and lower respiratory tracts and alveoli, resulting in rhinitis, bronchitis and other diseases, long-term in this environment will induce Lung cancer.

The hospital is extremely hot under the haze

According to Greenpeace statistics, the three worst provinces with the lowest concentration of PM2.5 in the first half of the year were Henan, Hebei, and Beijing. Although the report pointed out that 80% of urban air quality has not yet reached the national secondary standard, compared with last year's data, the overall urban air quality has been significantly improved. In the past 11 months, as the high season for smog, we found that the five cities with the worst air quality were Shenyang, Xingtai, Baoding, Shijiazhuang, and Harbin. Mist attacks on these cities bring varying degrees of harm.

The top eight PM2.5 pollution rankings in the first half of 2015

In November, severely polluted weather in Shenyang has exceeded 80 hours, and the local area haze index has broken down to 1400 micrograms/cubic meter. The air is filled with white haze, which has caused great problems for the public in terms of traffic and travel. Vehicles travel very slowly and many people wear masks in a hurry. Although there was a little snowfall in the afternoon, the effects of haze on the human body could not be diminished, and the smell of awkward people obviously made people feel uncomfortable and was very hot. Many respiratory clinics in Shenyang were overcrowded, and all major pharmacy anti-haze masks were almost out of stock.

The world's largest aircraft An 225 was smog and fall by Tianjin

Shijiazhuang was also greatly affected by the haze. According to the introduction of the world's largest cargo aircraft, An-225 arrived at Shijiazhuang Airport. Since the air quality reached a level of heavy pollution and visibility was low, there was no way to land. Of course, children affected by haze and low immunity, such as the elderly, although wearing a mask, but still cause acute rhinitis and acute bronchitis and other symptoms.

The rise in oil prices also serves to cure

In the air pollution, automobile exhaust is also one of the sources of pollution. During the severe blockage of roads and during traffic congestion, the vehicle did not turn off. As a result, the fuel efficiency is continuously reduced, and the pollution emissions of motor vehicles are also significantly increased. There are hundreds of different compounds in the vehicle exhaust, among which contaminants are solid aerosols, carbon monoxide, carbon dioxide, hydrocarbons, nitrogen oxides, lead, and sulfur oxides.

Does it still remember that in recent years, the quality standards of gasoline have been upgraded, and the standard has been upgraded from the "National 3" standard to the "National 4" standard. With this kind of replacement, what consumers feel is a disguised fare increase, and they have not noticed changes in the quality of oil products. The improved oil sulfide emissions are reduced by two-thirds, while the “National IV” standard gasoline benzene Content, olefin content, manganese content and other pollution indicators have also been further reduced. These changes have greatly reduced the pollution caused by vehicle exhaust.

However, despite this, the improvement in the quality of oil can contribute to the emission of automobile exhaust gas. However, international crude oil prices have continued to decline in recent days, and domestic oil prices that are in line with the world have also been lowered by reason. Recently, the Development and Reform Commission released a statement saying that "according to the current regulations on the mechanism for the formation of refined oil prices, oil prices will be maintained for environmental reasons and the price of domestic refined oil products will be temporarily adjusted."

Refining companies improve gasoline quality

Xiao Bian thinks that such a decision does not allow the people to accept it. Does the price remain unchanged, the masses will reduce driving out? In addition, there are many reasons for smog, and it may not be entirely blamed for car exhaust. It may be caused by factories stealing pollution and weather conditions. In addition, on the basis of maintaining the price of oil, it is necessary to increase the oil refining standards and improve the quality of gasoline as soon as possible so as to truly reduce the emission of polluting gases.

Fog and fire air purifier

Speaking of air pollution is reminiscent of air purifiers. Air purifiers, as the hottest home appliances in recent years, consist of motors, fans, and air filters. The air is circulated by the fan driven by the motor, and the polluted air is removed or adsorbed by the filter. Some products add negative ion generators that produce negative ions through ionization. Anion gas flow is formed to achieve the purpose of cleaning and purifying the air.

Some time ago, the Beijing Municipal Air Pollution Rescue Emergency Command issued a red warning signal for the first time. The air purifier market once again ushered in blowout sales. The net net sales of an e-commerce provider increased by 1300% year-on-year in the past week, while the offline sales increased by 600% year-on-year. Compared with the negative growth of sales of air purifiers before October this year, there is a sharp contrast. According to the online and offline data collected by China Yikang, from January to October, the size of the air-to-ground net product market reached 7.3 billion yuan, a year-on-year decline of 20.1%. The industry contraction has already become a fixed trend, and it is better to eliminate knockoff products and purify the market environment.

Foreign brands are more popular

From the big data, we can see that because consumers do not know how to identify new types of home appliances, they are more inclined to buy foreign brands in the purchase of air purifiers. Purifier sales TOP5 were Sharp, Philips, Yadu, Panasonic and Samsung, which together accounted for 64.7% of the total sales volume. However, only Asian brands were included in the domestic brands, which accounted for 13.6% of total sales. Foreign brands showed an overwhelming advantage. In fact, Xiao Bian believes that the purification effect of domestic air purifiers is not weak, and the filters they use are similar, and there is not much difference. Of course, it is not ruled out that some brands have its patented technology, making purification performance more efficient.

Philips air purifiers, for example, have a number of patented technologies and use VitaShield IPS Microshield Technology to effectively remove fine particles as small as 0.02 microns, including PM2.5, harmful gases, and microorganisms such as bacteria and viruses. And can effectively filter allergens in the air. The advanced AeraSense smart sensor technology is used to create a PM2.5 air quality sensor that is comparable in performance to professional laboratories, providing users with more accurate air quality feedback and real-time display of PM2.5 index.

Look for four points to buy an air purifier

The chaos in the air purifier market was gradually purifying, and the branded cottage products disappeared with the implementation of the new national standard for air purifiers in March next year. When consumers purchase air purifiers, they only need to look at four points to compare the quality of the products, including the “CADR” of clean air, the “CCM” accumulated purification amount, the energy efficiency level, and the noise. The higher the CADR value, the better the purification performance. The CCM, on the other hand, represents the sustainability of the filter's decontamination capabilities. Simply speaking, the higher the numerical value, the longer the filter can be used. The higher the energy efficiency level, the lower the power consumption of the product, and the noise directly affects the performance of our evaluation.

The full text concludes: The occurrence of hazy weather is not accidental. Apart from human pollution of the atmosphere, coal-fired heating and automobile exhaust, it is related to the influence of regional environment and weather season. The haze may come again, especially if the elderly people in the family and children have respiratory diseases. When air purifiers are purchased, do not blindly see the brand choices, but rationally choose according to the four important reference indicators of the new national standard. While raising the price of oil, the government has improved the quality of gasoline to improve exhaust emissions, so that consumers feel that the money has not been spent.

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