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It's another year when ozone pollution is high, it is urgent to monitor

 Last Update: 2021-08-08
 Source: Internet
 Author: User

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[ Focus on Chemical Machinery and Equipment Network ] In the hot summer, the risk of ozone pollution is rising rapidly, and all parts of the country have to wait for it.
It is another year of high incidence of ozone pollution, and monitoring is urgent
.

Chemical machinery and equipment network hotspots pay attention to chemical machinery and equipment

Recently, the National Climate Center of the China Meteorological Administration and the China Environmental Monitoring Station of the Ministry of Ecology and Environment jointly conducted a consultation on the forecast of air pollution and meteorological conditions in July and August-October 2021.
It was pointed out that the eastern part of China entered a period of frequent high temperature in July.
It is expected that 2-4 ozone pollution processes may occur in the Beijing-Tianjin-Hebei and surrounding areas, the junction of Jiangsu, Anhui, Shandong and Henan, and the Yangtze River Delta, mainly light to moderate pollution
.

In the hot summer days, the risk of ozone pollution has risen rapidly, especially around large cities and agricultural and forestry areas where ozone will form and accumulate on the surface
.
Surface ozone has erosive and damaging effects on the human body, especially on the eyes and respiratory tract.
All parts of the country must be prepared.
It is another year of high incidence of ozone pollution, and monitoring is urgent
.

What is ozone pollution?

Ozone usually exists in the upper atmosphere about 30 kilometers from the ground.
It can effectively block ultraviolet rays and protect human health.
However, once ozone is polluted, it will cause greater harm.
Then, what is ozone pollution?

　　Data show that ozone pollution is a man-made product.
It is caused by air pollution caused by internal combustion engines and power plants
.
Automobile exhaust and industrial emissions release a series of nitrogen oxide gases and volatile organic compounds, which are by-products of burning gasoline and coal
.

　　In addition, I learned that ozone pollution is mainly formed in urban areas and suburbs, but prevailing winds may also bring it to rural areas
.
Studies have shown that serious ozone pollution can be detected in rural areas 150 kilometers downwind from urban industrial areas, and the harm it causes is not small
.

　　Ozone pollution is harmful

　　The summer high temperature hits, and the temperature in many places rises suddenly, coupled with the impact of industrial and automobile exhaust, especially around large cities and agricultural and forestry areas, ozone will form and accumulate on the surface, causing ozone pollution and causing no small harm to people
.

　　First of all, ozone has a strong irritation, mainly to stimulate and damage the deep respiratory tract, and can damage the central nervous system, and has a mild irritating effect on the eyes; it also has a destructive effect on the vitamin E in human skin, causing human damage The skin is wrinkled and dark spots appear;

　　Secondly, ozone can also hinder the blood oxygen transfer function and cause tissue hypoxia; impair thyroid function and bone calcification, and can also cause potential systemic effects, such as inducing lymphocyte chromosome aberrations, impairing the activity of certain enzymes and producing hemolytic reactions
.

　　In addition, ozone is also teratogenic to the human body.
Exposure to ozone during pregnancy can lead to an increase in the incidence of neonatal palpebral fissure
.
It is not difficult to see that ozone is extremely harmful to the human body, and we must pay attention to it.
Monitoring is urgent
.

　　Monitoring is urgent

　　In order to improve the level of prevention and control of ozone pollution, not only the concentration of ozone in the atmosphere needs to be monitored, but also the precursors of ozone—nitrogen oxides and volatile organic compounds, as well as meteorological factors that affect the formation of ozone
.

　　On the one hand, by monitoring the influence of changes in precursors and meteorological factors on the ozone concentration, mathematical analysis methods can be used to establish relevant models to accurately predict ozone pollution and find key factors to reduce ozone concentration; on the other hand, by examining the precursors Through the traceability of the source, the source of ozone pollution can be found, and targeted measures can be taken to alleviate ozone pollution from the source
.

　　What equipment is there to help ozone monitoring? The ozone analyzer is reported, which is composed of a low-pressure ultraviolet lamp, a light wave filter , an incident ultraviolet reflector, an ozone absorption cell, a sample photoelectric sensor , a sampling photoelectric sensor, an output display, and circuit components
.

Filter sensor

　　In addition, portable navigation devices and PID monitors have become "weapons" in ozone pollution monitoring and supervision, and satellite remote sensing technology can also be used to monitor ozone
.

　　As the country pays more and more attention to ozone control, the method of ozone sensor is gradually developed to detect ozone
.
Ozone sensors include porous glass sensors, electrochemical ozone sensors and so on
.
Sensors usually have the characteristics of small size and low power consumption.
Compared with ozone analyzers, they are more suitable for the detection of ozone concentration in urban air monitoring points
.

　　Conclusion: Ozone pollution is one of the challenging problems in air quality management.
It is another year of high incidence of ozone pollution, and it is urgent to monitor, and instruments and equipment will help
.

　　Original title: Another year of ozone pollution high incidence period for monitoring urgent

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