The ratio of gases in the air. Where can I find fresh air? What is air

The atmosphere is the gaseous shell of our planet, which rotates along with the Earth. The gas in the atmosphere is called air. The atmosphere is in contact with the hydrosphere and partially covers the lithosphere. But the upper limits are difficult to determine. It is conventionally accepted that the atmosphere extends upward for approximately three thousand kilometers. There it smoothly flows into airless space.

Chemical composition of the Earth's atmosphere

The formation of the chemical composition of the atmosphere began about four billion years ago. Initially, the atmosphere consisted only of light gases - helium and hydrogen. According to scientists, the initial prerequisites for the creation of a gas shell around the Earth were volcanic eruptions, which, along with lava, ejected great amount gases Subsequently, gas exchange began with water spaces, with living organisms, and with the products of their activities. The composition of the air gradually changed and modern form recorded several million years ago.

The main components of the atmosphere are nitrogen (about 79%) and oxygen (20%). The remaining percentage (1%) comes from the following gases: argon, neon, helium, methane, carbon dioxide, hydrogen, krypton, xenon, ozone, ammonia, sulfur dioxide and nitrogen dioxide, nitrous oxide and carbon monoxide included in this one percent.

In addition, the air contains water vapor and particulate matter(plant pollen, dust, salt crystals, aerosol impurities).

IN Lately Scientists note not a qualitative, but a quantitative change in some air ingredients. And the reason for this is man and his activities. In the last 100 years alone, carbon dioxide levels have increased significantly! This is fraught with many problems, the most global of which is climate change.

Formation of weather and climate

The atmosphere is playing vital role in the formation of climate and weather on Earth. A lot depends on the amount of sunlight, the nature of the underlying surface and atmospheric circulation.

Let's look at the factors in order.

1. The atmosphere transmits the heat of the sun's rays and absorbs harmful radiation. About the fact that the rays of the sun fall on different areas Lands under different angles, the ancient Greeks knew. The word “climate” itself translated from ancient Greek means “slope”. So, at the equator, the sun's rays fall almost vertically, which is why it is very hot here. The closer to the poles, the greater the angle of inclination. And the temperature drops.

2. Due to the uneven heating of the Earth, air currents are formed in the atmosphere. They are classified according to their sizes. The smallest (tens and hundreds of meters) are local winds. This is followed by monsoons and trade winds, cyclones and anticyclones, and planetary frontal zones.

All these air masses are constantly moving. Some of them are quite static. For example, trade winds that blow from the subtropics towards the equator. The movement of others depends largely on atmospheric pressure.

3. Atmospheric pressure is another factor influencing climate formation. This is the air pressure on the surface of the earth. As is known, air masses move from an area with high atmospheric pressure towards an area where this pressure is lower.

A total of 7 zones are allocated. Equator - zone low pressure. Further, on both sides of the equator up to the thirties latitudes there is an area of ​​high pressure. From 30° to 60° - low pressure again. And from 60° to the poles is a high pressure zone. Air masses circulate between these zones. Those that come from the sea to land bring rain and bad weather, and those that blow from the continents bring clear and dry weather. In places where air currents collide, atmospheric front zones are formed, which are characterized by precipitation and inclement, windy weather.

Scientists have proven that even a person’s well-being depends on atmospheric pressure. By international standards normal atmospheric pressure is 760 mm Hg. column at a temperature of 0°C. This indicator is calculated for those areas of land that are almost level with sea level. With altitude the pressure decreases. Therefore, for example, for St. Petersburg 760 mm Hg. - this is the norm. But for Moscow, which is located higher, normal pressure- 748 mm Hg.

The pressure changes not only vertically, but also horizontally. This is especially felt during the passage of cyclones.

The structure of the atmosphere

The atmosphere is reminiscent of a layer cake. And each layer has its own characteristics.

. Troposphere- the layer closest to the Earth. The "thickness" of this layer changes with distance from the equator. Above the equator, the layer extends upward by 16-18 km, in temperate zones by 10-12 km, at the poles by 8-10 km.

It is here that 80% of the total air mass and 90% of water vapor are contained. Clouds form here, cyclones and anticyclones arise. The air temperature depends on the altitude of the area. On average, it decreases by 0.65° C for every 100 meters.

. Tropopause- transition layer of the atmosphere. Its height ranges from several hundred meters to 1-2 km. The air temperature in summer is higher than in winter. For example, above the poles in winter it is -65° C. And above the equator it is -70° C at any time of the year.

. Stratosphere- this is a layer whose upper boundary lies at an altitude of 50-55 kilometers. Turbulence here is low, the content of water vapor in the air is negligible. But there is a lot of ozone. Its maximum concentration is at an altitude of 20-25 km. In the stratosphere, the air temperature begins to rise and reaches +0.8° C. This is due to the fact that ozone layer interacts with ultraviolet radiation.

. Stratopause- a low intermediate layer between the stratosphere and the mesosphere that follows it.

. Mesosphere- the upper boundary of this layer is 80-85 kilometers. Complex photochemical processes involving free radicals occur here. They are the ones who provide that gentle blue glow of our planet, which is seen from space.

Most comets and meteorites burn up in the mesosphere.

. Mesopause- the next intermediate layer, the air temperature in which is at least -90°.

. Thermosphere- bottom line begins at an altitude of 80 - 90 km, and the upper boundary of the layer runs approximately at around 800 km. The air temperature is rising. It can vary from +500° C to +1000° C. During the day, temperature fluctuations amount to hundreds of degrees! But the air here is so rarefied that understanding the term “temperature” as we imagine it is not appropriate here.

. Ionosphere- combines the mesosphere, mesopause and thermosphere. The air here consists mainly of oxygen and nitrogen molecules, as well as quasi-neutral plasma. Sun rays When entering the ionosphere, air molecules are strongly ionized. In the lower layer (up to 90 km) the degree of ionization is low. The higher, the greater the ionization. So, at an altitude of 100-110 km, electrons are concentrated. This helps to reflect short and medium radio waves.

The most important layer of the ionosphere is the upper one, which is located at an altitude of 150-400 km. Its peculiarity is that it reflects radio waves, and this facilitates the transmission of radio signals over considerable distances.

It is in the ionosphere that such a phenomenon as the aurora occurs.

. Exosphere- consists of oxygen, helium and hydrogen atoms. The gas in this layer is very rarefied and hydrogen atoms often escape into outer space. Therefore, this layer is called the “dispersion zone”.

The first scientist to suggest that our atmosphere has weight was the Italian E. Torricelli. Ostap Bender, for example, in his novel “The Golden Calf” lamented that every person is pressed by a column of air weighing 14 kg! But the great schemer was a little mistaken. An adult experiences pressure of 13-15 tons! But we don't feel this heaviness because the atmospheric pressure is balanced internal pressure person. The weight of our atmosphere is 5,300,000,000,000,000 tons. The figure is colossal, although it is only a millionth of the weight of our planet.

The lower layers of the atmosphere consist of a mixture of gases called air , in which liquid and solid particles are suspended. The total mass of the latter is insignificant in comparison with the entire mass of the atmosphere.

Atmospheric air is a mixture of gases, the main of which are nitrogen N2, oxygen O2, argon Ar, carbon dioxide CO2 and water vapor. Air without water vapor is called dry air. At the earth's surface, dry air is 99% nitrogen (78% by volume or 76% by mass) and oxygen (21% by volume or 23% by mass). The remaining 1% is almost entirely argon. Only 0.08% remains for carbon dioxide CO2. Numerous other gases are part of the air in thousandths, millionths and even smaller fractions of a percent. These are krypton, xenon, neon, helium, hydrogen, ozone, iodine, radon, methane, ammonia, hydrogen peroxide, nitrous oxide, etc. The composition of dry atmospheric air near the Earth's surface is given in table. 1.

Table 1

Composition of dry atmospheric air near the Earth's surface

Percentage composition dry air near the earth's surface is very constant and almost the same everywhere. Only the carbon dioxide content can change significantly. As a result of the processes of breathing and combustion, its volumetric content in the air of closed, poorly ventilated rooms, as well as industrial centers, can increase several times - up to 0.1-0.2%. Changes very little percentage nitrogen and oxygen.

The real atmosphere contains three important variable components - water vapor, ozone and carbon dioxide. The content of water vapor in the air varies within significant limits, unlike other components air: near the earth's surface it fluctuates between hundredths of a percent and several percent (from 0.2% in polar latitudes to 2.5% at the equator, and in in some cases fluctuates from almost zero to 4%). This is explained by the fact that, under the conditions existing in the atmosphere, water vapor can transform into liquid and solid states and, conversely, can enter the atmosphere again due to evaporation from the earth’s surface.

Water vapor continuously enters the atmosphere through evaporation from water surfaces, from moist soil and through transpiration of plants, while different places and in different time he enters various quantities. It spreads upward from the earth's surface, and is transported by air currents from one place on the earth to another.

A saturation state may occur in the atmosphere. In this state, water vapor is contained in the air in the amount that is maximum possible at a given temperature. Water vapor is called saturating(or saturated), and the air containing it saturated.

The saturation state is usually reached when the air temperature decreases. When this state is reached, then with a further decrease in temperature, part of the water vapor becomes excess and condenses, turns into a liquid or solid state. Water droplets and ice crystals of clouds and fogs appear in the air. Clouds may evaporate again; in other cases, cloud droplets and crystals, becoming larger, can fall onto the earth's surface in the form of precipitation. As a result of all this, the content of water vapor in each part of the atmosphere is constantly changing.

Water vapor in the air and its transitions from gaseous to liquid and solid are associated with the most important processes weather and climate features. The presence of water vapor in the atmosphere significantly affects the thermal conditions of the atmosphere and the earth's surface. Water vapor strongly absorbs long-wave infrared radiation emitted by the earth's surface. In turn, it itself emits infrared radiation, most of which goes to the earth's surface. This reduces the nighttime cooling of the earth's surface and thus also the lower air layers.

The evaporation of water from the earth's surface takes large quantities heat, and when water vapor condenses in the atmosphere, this heat is transferred to the air. Clouds resulting from condensation reflect and absorb solar radiation on its way to the earth's surface. Precipitation falling from clouds is the most important element weather and climate. Finally, the presence of water vapor in the atmosphere has important For physiological processes.

Water vapor, like any gas, has elasticity (pressure). Water vapor pressure e is proportional to its density (content per unit volume) and its absolute temperature. It is expressed in the same units as air pressure, i.e. either in millimeters of mercury, either in millibars

The pressure of water vapor at saturation is called saturation elasticity. This the maximum pressure of water vapor possible at a given temperature. For example, at a temperature of 0° the saturation elasticity is 6.1 mb . For every 10° temperature increase, the saturation elasticity approximately doubles.

If the air contains less water vapor than is needed to saturate it at a given temperature, you can determine how close the air is to the saturation state. To do this, calculate relative humidity. This is what is called the ratio of actual elasticity e water vapor in the air to saturation elasticity E at the same temperature, expressed as a percentage, i.e.

For example, at a temperature of 20° the saturation pressure is 23.4 mb. If the actual vapor pressure in the air is 11.7 mb, then the relative humidity is

The elasticity of water vapor at the earth's surface varies from hundredths of a millibar (at very low temperatures in winter in Antarctica and Yakutia) up to 35 mb more (at the equator). The warmer the air, the more water vapor it can contain without saturation and, therefore, the greater the water vapor pressure in it.

Relative air humidity can take on all values ​​- from zero for completely dry air ( e= 0) to 100% for saturation condition (e = E).

That part of the atmosphere that is adjacent to the Earth and which a person breathes accordingly is called the troposphere. The troposphere has a height of nine to eleven kilometers and is a mechanical mixture of various gases.

The composition of the air is not constant. Depending on the geographical location, terrain, weather conditions, air can have different composition And various properties. The air can be polluted or rarefied, fresh or heavy - all this means that it contains certain impurities.

Nitrogen - 78.9 percent;

Oxygen - 20.95 percent;

Carbon dioxide - 0.3 percent.

In addition, other gases are present in the atmosphere (helium, argon, neon, xenon, krypton, hydrogen, radon, ozone), and their total amount is slightly less than one percent.

It is also worth pointing out the presence in the air of some permanent impurities of natural origin, in particular, some gaseous products that are formed as a result of both biological and chemical processes. Among them, ammonia deserves special mention (the composition of the air far from populated areas includes about three to five thousandths of a milligram per cubic meter), methane (its level is on average two ten thousandths of a milligram per cubic meter), nitrogen oxides (in the atmosphere their concentration reaches approximately fifteen ten-thousandths of a milligram per cubic meter), hydrogen sulfide and other gaseous products.

In addition to vapor and gaseous impurities, chemical composition air usually includes dust of cosmic origin, which falls on the surface of the Earth in the amount of seven hundred thousandths of a ton per square kilometer during the year, as well as dust particles that come from volcanic eruptions.

However, it changes to the greatest extent (and not in better side) the composition of the air and pollutes the troposphere by the so-called ground (plant, soil) dust and smoke of forest fires. There is especially a lot of such dust in continental air masses originating in the deserts of Central Asia and Africa. That is why we can say with confidence that an ideally clean air environment simply does not exist, and it is a concept that exists only theoretically.

The composition of the air tends to constantly change, and its natural changes usually play a fairly small role, especially in comparison with possible consequences its artificial violations. Such violations are mainly associated with the industrial activities of mankind, the use of devices for consumer services, as well as vehicles. These disturbances can lead, among other things, to air denaturation, that is, to pronounced differences in its composition and properties from the corresponding indicators of the atmosphere.

These and many other types human activity led to the fact that the main composition of the air began to undergo slow and insignificant, but nevertheless absolutely irreversible changes. For example, scientists have calculated that over the past fifty years, humanity has used approximately the same amount of oxygen as in the previous million years, and in percentage terms - two-tenths of a percent of its total supply in the atmosphere. At the same time, emissions into the air increase accordingly. According to the latest data, emissions have reached almost four hundred billion tons over the past hundred years.

Thus, the composition of the air is changing for the worse, and it is difficult to imagine what it will be like in a few decades.

We all know very well that no one on earth can live without air. Living being. Air is vital for all of us. Everyone, from children to adults, knows that it is impossible to survive without air, but not everyone knows what air is and what it consists of. So, air is a mixture of gases that cannot be seen or touched, but we all know very well that it is around us, although we practically do not notice it. To conduct research various nature, including, is possible in our laboratory.

We can feel the air only when we feel a strong wind or we are near a fan. What does air consist of? It consists of nitrogen and oxygen, and only a small part of argon, water, hydrogen and carbon dioxide. If we consider the composition of air in percentage, then nitrogen is 78.08 percent, oxygen 20.94%, argon 0.93 percent, carbon dioxide 0.04 percent, neon 1.82 * 10-3 percent, helium 4.6 * 10-4 percent, methane 1.7 * 10-4 percent, krypton 1.14*10-4 percent, hydrogen 5*10-5 percent, xenon 8.7*10-6 percent, nitrous oxide 5*10-5 percent.

The oxygen content in the air is very high because oxygen is necessary for life. human body. Oxygen, which is observed in the air during breathing, enters the cells of the human body and participates in the oxidation process, as a result of which the energy needed for life is released. Also, oxygen, which is present in the air, is required for the combustion of fuel, which produces heat, as well as for the production of mechanical energy in internal combustion engines.

Also, inert gases are extracted from air during liquefaction. How much oxygen is in the air, if you look at it as a percentage, then oxygen and nitrogen in the air are 98 percent. Knowing the answer to this question, another question arises, what gaseous substances are included in the air.

So, in 1754, a scientist named Joseph Black confirmed that air consists of a mixture of gases, and not a homogeneous substance as previously thought. The composition of the air on earth includes methane, argon, carbon dioxide, helium, krypton, hydrogen, neon, and xenon. It is worth noting that the percentage of air may vary slightly depending on where people live.

Unfortunately, in major cities the proportion of carbon dioxide as a percentage will be higher than, for example, in villages or forests. The question arises what percentage of oxygen is in the air in the mountains. The answer is simple, oxygen is much heavier than nitrogen, so there will be much less of it in the air in the mountains, this is because the density of oxygen decreases with altitude.

Level of oxygen in the air

So, regarding the ratio of oxygen in the air, there are certain standards, for example, for working area. In order for a person to be able to fully work, the oxygen level in the air is from 19 to 23 percent. When operating equipment in enterprises, it is imperative to monitor the tightness of the devices, as well as various machines. If, when testing the air in the room where people work, the oxygen level is below 19 percent, then it is imperative to leave the room and turn on emergency ventilation. You can control the level of oxygen in the air at the workplace by inviting the EcoTestExpress laboratory and research.

Let's now define what oxygen is

There is oxygen chemical element periodic table Mendeleev's elements, oxygen has no smell, no taste, no color. Oxygen in the air is extremely necessary for human breathing, as well as for combustion, because it’s no secret that if there is no air, then no materials will burn. Oxygen contains a mixture of three stable nuclides, the mass numbers of which are 16, 17 and 18.

So, oxygen is the most common element on earth, as for the percentage, the largest percentage of oxygen is found in silicates, which is about 47.4 percent of the mass of solids earth's crust. Also in maritime and fresh waters The entire earth contains a huge amount of oxygen, namely 88.8 percent; as for the amount of oxygen in the air, it is only 20.95 percent. It should also be noted that oxygen is part of more than 1,500 compounds in the earth’s crust.

As for the production of oxygen, it is obtained by separating air at low temperatures. This process happens like this: first, air is compressed using a compressor; when compressed, the air begins to heat up. The compressed air is allowed to cool to room temperature, and after cooling it is allowed to expand freely.

When expansion occurs, the temperature of the gas begins to drop sharply; after the air has cooled, its temperature can be several tens of degrees below room temperature, such air is again subjected to compression and the released heat is removed. After several stages of air compression and cooling, a number of other procedures are performed as a result of which the pure oxygen without any impurities.

And here another question arises: what is heavier: oxygen or carbon dioxide. The answer is simply of course carbon dioxide will be heavier than oxygen. The density of carbon dioxide is 1.97 kg/m3, but the density of oxygen, in turn, is 1.43 kg/m3. As for carbon dioxide, it turns out that it plays one of the main roles in the life of all life on earth, and also has an impact on the carbon cycle in nature. It has been proven that carbon dioxide is involved in the regulation of respiration, as well as blood circulation.

What is carbon dioxide?

Now let’s define in more detail what carbon dioxide is, and also designate the composition of carbon dioxide. So, carbon dioxide in other words is carbon dioxide, it is a colorless gas with a slightly sour odor and taste. As for air, the concentration of carbon dioxide in it is 0.038 percent. Physical properties carbon dioxide is that it does not exist in a liquid state under normal conditions atmospheric pressure, but passes directly from the solid state to the gaseous state.

Carbon dioxide in solid form is also called dry ice. Today, carbon dioxide is a participant in global warming. Producing carbon dioxide through combustion various substances. It is worth noting that when industrial production carbon dioxide is pumped into cylinders. Carbon dioxide pumped into cylinders is used as fire extinguishers, as well as in the production of carbonated water, and is also used in pneumatic weapons. And also in Food Industry as a preservative.

Composition of inhaled and exhaled air

Now let's look at the composition of inhaled and exhaled air. First, let's define what breathing is. Respiration is a complex, continuous process through which the gas composition of the blood is constantly renewed. The composition of inhaled air is 20.94 percent oxygen, 0.03 percent carbon dioxide and 79.03 percent nitrogen. But the composition of exhaled air is only 16.3 percent oxygen, as much as 4 percent carbon dioxide and 79.7 percent nitrogen.

You can notice that the inhaled air differs from the exhaled air in the oxygen content, as well as in the amount of carbon dioxide. These are the substances that make up the air we breathe and exhale. Thus, our body is saturated with oxygen and releases all unnecessary carbon dioxide outside.

Dry oxygen improves the electrical and protective properties of films due to the absence of water, as well as their compaction and reduction of volume charge. Also, dry oxygen under normal conditions cannot react with gold, copper or silver. To conduct a chemical analysis of air or other laboratory test, including, can be done in our EcoTestExpress laboratory.

Air is the atmosphere of the planet on which we live. And we always have the question of what is included in the air, the answer is simply a set of gases, as it was already described above which gases are in the air and in what proportion. As for the content of gases in the air, everything is easy and simple; the percentage ratio for almost all areas of our planet is the same.

Composition and properties of air

Air consists not only of a mixture of gases, but also of various aerosols and vapors. The percentage composition of air is the ratio of nitrogen, oxygen and other gases in the air. So, how much oxygen is in the air, the simple answer is just 20 percent. Component composition of the gas, as for nitrogen, it contains the lion's share of all air, and it is worth noting that when high blood pressure nitrogen begins to have narcotic properties.

This is of no small importance, because when divers work, they often have to work at depths under enormous pressure. Much has been said about oxygen, because it has great value for human life on our planet. It is worth noting that a person’s inhalation of air with increased oxygen is not a long period does not have a detrimental effect on the person himself.

But if a person inhales air from increased level oxygen for a long time, then this will lead to the emergence pathological changes in organism. Another main component of air, about which much has already been said, is carbon dioxide, as it turns out that a person cannot live without it as well as without oxygen.

If there was no air on earth, then not a single living organism would be able to live on our planet, much less function somehow. Unfortunately, in modern world a huge number of industrial facilities that pollute our air have recently increasingly called for what needs to be protected environment and also monitor the cleanliness of the air. Therefore, you should take frequent measurements of the air to determine how clean it is. If it seems to you that the air in your room is not clean enough and this is to blame external factors you can always contact the EcoTestExpress laboratory, which will carry out everything necessary tests(, research) and will give a conclusion about the purity of the air you inhale.

Candidate of Chemical Sciences O. BELOKONEVA.

How often, after a tiring day at work, we are suddenly overcome by irresistible fatigue, our heads become heavy, our thoughts are confused, we become drowsy... Such an ailment is not considered a disease, but nevertheless it greatly interferes with normal life and work. Many people rush to take a headache pill and go to the kitchen to brew a cup of strong coffee. Or maybe you just don't have enough oxygen?

Producing air enriched with oxygen.

As you know, the earth's atmosphere consists of 78% of a chemically neutral gas - nitrogen, almost 21% is the basis of all living things - oxygen. But it was not always so. As shown modern research, 150 years ago the oxygen content in the air reached 26%, and in prehistoric times dinosaurs breathed air that contained more than a third of oxygen. Today, all inhabitants of the globe suffer from a chronic lack of oxygen - hypoxia. It is especially difficult for city residents. So, underground (in the subway, in passages and underground shopping centers) the oxygen concentration in the air is 20.4%, in high-rise buildings - 20.3%, and in a crowded carriage of ground transport - only 20.2%.

It has long been known that increasing the oxygen concentration in the inhaled air to the level established by nature (about 30%) has a beneficial effect on human health. It's not for nothing that astronauts on the International Space Station breathe air containing 33% oxygen.

How to protect yourself from hypoxia? In Japan the residents big cities So-called “oxygen bars” have recently become popular. This is a kind of cafe - anyone can drop in and, for a small fee, breathe oxygen-enriched air for 20 minutes. The “oxygen bars” have more than enough clients, and their number continues to grow. Among them are many young women, but there are also older people.

Until recently, Russians did not have the opportunity to experience the role of a visitor to a Japanese oxygen bar. But in 2004 Russian market A Japanese device for air enrichment with oxygen "Oxycool-32" from the company "YMUP/Yamaha Motors group" is released. Since the technology used to create the device is truly new and unique (an international patent is currently being filed for it), readers are probably interested in learning more about it.

The operation of the new Japanese device is based on the principle of membrane gas separation. Atmospheric air at normal pressure is supplied to the polymer membrane. The thickness of the gas separation layer is 0.1 micrometers. The membrane is made of high molecular weight material: when high blood pressure it adsorbs gas molecules, and at low temperatures it releases. Gas molecules penetrate into the spaces between the polymer chains. The “slow gas” nitrogen penetrates the membrane at a lower rate than the “fast” oxygen. The amount of nitrogen “lag” depends on the difference in partial pressures between the external and internal surfaces membranes and air flow speed. On inside membrane pressure is reduced: 560 mm Hg. Art. The pressure ratio and flow rate are selected in such a way that the concentration of nitrogen and oxygen at the outlet is 69% and 30%, respectively. Oxygen-enriched air comes out at a speed of 3 l/min.

The gas separation membrane traps microorganisms and pollen in the air. In addition, the air flow can be passed through a solution of aromatic essence, so that a person will breathe air that is not only purified from bacteria, viruses and pollen, but also has a pleasant soft aroma.

The Oxycool-32 device has a built-in air ionizer, similar to the Chizhevsky chandelier, widely known in Russia. Under the influence ultraviolet radiation electrons are emitted from the titanium tip. Electrons ionize oxygen molecules, forming negatively charged “aeroions” in the amount of 30,000-50,000 ions per cubic centimeter. "Aeroions" normalize the potential of the cell membrane, thereby affecting the body restorative effect. In addition, they charge dust and dirt suspended in the city air in the form of a fine aerosol. As a result, the dust settles and the air in the room becomes much cleaner.

By the way, this small-sized device can also be connected to a car power source, which will allow the driver to enjoy fresh air even while stuck in a multi-kilometer traffic jam on the Moscow Garden Ring.

The main carrier of oxygen in the body is hemoglobin, which is found in red blood cells - erythrocytes. The more oxygen red blood cells “deliver” to the body’s cells, the more intense the metabolism in general is: fats are “burned”, as well as substances harmful to the body; lactic acid is oxidized, the accumulation of which in the muscles causes symptoms of fatigue; new collagen is synthesized in skin cells; blood circulation and breathing improve. Therefore, increasing the concentration of oxygen in the inhaled air relieves fatigue, drowsiness and dizziness, eases muscle and lower back pain, stabilizes blood pressure, reduces shortness of breath, improves memory and attentiveness, improves sleep, and relieves hangover syndrome. Regular use of the device will help reset excess weight and rejuvenate the skin. Oxygen therapy is also useful for asthmatics, patients, and chronic bronchitis, severe forms of pneumonia.

Regular inhalation of oxygen-enriched air will prevent hypertension, atherosclerosis, stroke, impotence, and in older people, sleep apnea, which sometimes leads to fatal outcome. Additional oxygen will also serve well for diabetics - it will make it possible to reduce the number of daily insulin injections.

"Oxycool-32" will undoubtedly find application in sports clubs, hotels, beauty salons, offices, and entertainment complexes. But this does not mean that the new device is not suitable for individual use. Quite the contrary: even children and the elderly can use it at home. Medical supervision is not necessary with this oxygen-reducing therapy. It is very useful to breathe oxygen before or after physical education and sports, after a hard day at work, or simply to restore strength and maintain tone: 15-30 minutes in the morning and 30-45 in the evening.

"Oxycool-32" increases the concentration of oxygen in the inhaled air to the level established by nature. Therefore, the device is safe for health. But, if you suffer from any serious chronic disease, before starting the procedures, you should still consult with your doctor.