Hunan Daily All-Media Reporter Zhou Yangle Correspondent Yang Yimei
Ozone When it is in the sky 15-25 kilometers above the ground, it forms the familiar ozone layer , which can absorb most harmful ultraviolet radiation, only allow visible light in the sun to pass through, and protect organisms on the earth. But when it falls into the ground, it is not necessarily a "Buddha" or a "demon"! Ms. Pan (pseudonym), who is engaged in assembly line operations, has a deep understanding of this.
At the end of November, Ms. Pan smelled a fishy smell when she was at work, but she didn't care about continuing to work. 20 minutes later, she felt a little uncomfortable, and she developed symptoms such as dry cough, tight throat, dizziness, nausea, etc. She hurriedly searched for the trash can and vomited. After getting up, I wanted to go out to buy a bottle of water to rinse my mouth, but after walking a few steps, I fainted in the factory. The colleague hurriedly sent Ms. Pan to the Hunan Provincial Occupational Disease Prevention and Control Institute for treatment.
While being sent to the hospital, the factory found that it was an ozone anti-virus that was usually performed in the evening, but it was accidentally activated that morning - Ms. Pan was poisoned by ozone!
Lai Yan, director of the Department of Poisoning Medicine of Hunan Provincial Occupational Disease Prevention and Control Hospital, pointed out that Ms. Pan's poisoning was related to short-term and high-concentration exposure to ozone, and immediately provided symptomatic support treatments such as brain protection, high-pressure oxygen, and dizziness improvement. The patient's symptoms improved at the moment.
Lai Yan introduced that high concentrations of ozone exceeding the standard are harmful and may cause mucosal irritation symptoms. In severe cases, it can cause lung irritation symptoms or even pulmonary edema ; it damages the body's immune function, induces lymphocyte chromosomal lesions, accelerates aging, and causes pregnant women to have deformed children; in case of acute poisoning, hypoxia in a short period of time can also cause damage to central nerve . "For patients with acute ozone poisoning, we need to pay more attention to the damage to of each target organ and strive for early treatment." Lai Yan said that ozone poisoning is mainly manifested in the respiratory system, nervous system , circulatory system, etc. If ozone poisoning occurs, we must first leave the toxic environment, and secondly, we must actively go to the hospital to eliminate target organ damage, and conduct standardized treatment as soon as possible to avoid life-threatening or sequelae.
In daily life, ozone is often used to disinfect drinking water, purify air, and even medical treatment. So, since it is poisonous, why can it be used so widely? The answer lies in "dose".
No toxicity can be discussed aside the dose, and ozone is no exception. Specifically, when the ozone concentration of in is 20-40μg/L, there is no adverse reaction in the human body; when the concentration is 100-140μg/L, it will feel irritating to the mucosa of the eyes, nose and throat; when the concentration is 140-160μg/L, symptoms such as dry mouth and tongue, sore throat, and cough appear; when the concentration exceeds 10,000μg/L, it will be harmful to the human body.
Lai Yan reminds: With the full efforts of the blue sky defense battle, the national air quality has improved significantly, but the problem of ozone pollution still exists. When encountering ozone pollution, people should take the following protection:
1. Reasonably arrange outdoor travel time. The peak ozone pollution is generally between noon and 3 pm. Therefore, when the outdoor ozone concentration is high, you should try to avoid going out during this period.
2. Use indoor air to purify equipment. When ventilation is required for indoor use, if ozone pollution occurs, indoor air purification equipment can be used to stay away from ozone pollution.
3. Enhance your own immunity . In normal times, you should increase physical exercise to improve your physical fitness, which can appropriately reduce the damage to the upper respiratory tract of ozone.
(first trial: Zhou Yangle; second trial: Hu Yufen; third trial: Yang Youhua)
