What pollution will ozone cause (what pollution will ozone cause)

After the smog, an "invisible killer-ozone" is endangering people's health. According to the website of Shanghai Environmental Monitoring Center, as of August 6th, Shanghai had been polluted by ozone for 1 1 day, and the air quality index reached the highest value of 134 that afternoon, which was 1. The main pollutant is ozone. So what is ozone pollution? What are the main toxic chemical components?

What is ozone pollution?

Ozone usually exists in the upper atmosphere about 30 kilometers from the ground, and it is the guardian of the earth, which can effectively block ultraviolet rays and protect human health. The near-surface ozone at 10- 100 meters is caused by serious environmental pollution, which will have many disadvantages to human health.

Composition of ozone

The main sources of near-surface ozone are a series of nitrogen oxides and volatile organic compounds released from internal combustion engines, power plants, automobile exhaust and industrial emissions, which are by-products of burning gasoline and coal. Under sunny and high temperature weather conditions in late spring, early summer and early autumn, nitrogen oxides and VOC react with oxygen to generate ozone.

Harm of near-surface ozone

Near-surface ozone is ozone pollution, which is harmful to health, mainly in the following aspects.

Respiratory tract injury

Ozone is highly corrosive. Inhaling ozone can irritate and damage nasal mucosa and respiratory tract, and damage bronchioles and alveoli in your lungs. Repeated exposure to ozone can cause chest tightness and cough, and in severe cases, it can cause asthma or respiratory infection, leading to lung tissue inflammation.

Destroy the immune system

Ozone can destroy the human immune system, induce lymphocyte chromosome lesions, accelerate the aging of the body, and make pregnant women give birth to deformed children. It can also lead to neurotoxicity and memory loss.

Harm the skin

Ozone can destroy vitamin E in human skin, leading to wrinkles and dark spots on human skin.

How to prevent near-surface ozone pollution

High concentrations of ozone usually form in hot afternoons and nights and dissipate in cool nights.

Unlike the prevention of PM2.5, wearing a mask is ineffective in preventing ozone. The environmental protection department advises the public to avoid outdoor activities at two or three o'clock in the afternoon when ozone pollution is the most serious. Midsummer is the high season of ozone pollution, and ozone pollution will be alleviated from September.