Hello, friend who asked "cheng04 14": I wonder if you have any experience of walking in the field after a thunderstorm? The smell of earth and grass is everywhere, the vegetation is covered with dew, and the air is fresh. If it clears up after the rain, there is a feeling that everything will revive. Being in this environment is simply a pleasure! And the "smell of earth and grass" just mentioned is a trace of ozone! Why is there ozone? This is due to the thunder and lightning in rainy days. High-voltage ionization generated by lightning produces ozone, which can quickly kill bacteria in the air in a short time, which is equivalent to "disinfecting" the atmosphere and the ground. After "disinfection", it is quickly converted into oxygen, which increases the oxygen in the air. At this time, the oxygen in the air is greatly increased and the purity is very high, which will make people feel "fresh"! Here is a brief introduction to the characteristics and functions of ozone:
Ozone is an allotrope of oxygen, which is an unstable lavender gas at room temperature, with a pungent smell and a "fresh" smell in trace amounts. Ozone has a strong oxidation capacity, and its oxidation-reduction potential in water is 2.07v, which is second only to fluorine, and its oxidation capacity is higher than chlorine (1.36v) and chlorine dioxide (1.5v). It is precisely because of its strong oxidation that ozone has a strong killing effect on bacteria, molds and viruses, which is usually a comprehensive effect of physics, chemistry and biology.
Its mechanism can be the following aspects:
(1) Ozone can easily react with lipoproteins in bacterial cell walls or phospholipids and protein in cell membranes, thus making it thinner.
The cell wall and cells of bacteria are destroyed (so-called bacteriolysis), the permeability of cell membrane increases, and the substances in cells flow out, making it
Lose vitality.
⑵ Ozone destroys or decomposes the cell wall, quickly spreads into cells, oxidizes enzymes or rna and dna in cells, and thus kills pathogens.
Body. Under the action of high voltage and strong electric field, gas produces pulsed corona discharge on the surface of dielectric, producing high concentration plasma, electrons and
Ions are accelerated by strong electric field force to collide with gas molecules, and oxygen molecules are decomposed into monatomic oxygen in 10s and atoms in 10s.
Oxygen and molecular oxygen combine to form ozone;
o2 +e →2o+2o2 → 2o3
Ozone is unstable in water, and the reduction reaction occurs all the time, producing very active units with strong oxidation.
Oxygen (O) decomposes bacteria and microbial organisms in water at the moment of production.
o3 → o2+ (o) (o)+h2o → 2ho
The "half-life" of ozone in water is 20min (4 1min at pH 7.6 and 0.5min at ph 10.4). People put ozone-containing
Water is called ozone water. Ozone water has a strong bactericidal effect on various pathogenic microorganisms. Ozone is unstable in water and produces strong oxygen.
Chemical reduction reaction.