The reason for the high carbon dioxide content in the caves is:

Infrared absorbing CO2 gas sensor (CO2 sensor) was selected for carbon dioxide gas detection method (A CO2 gas detection method was designed, and its structure and working principle were described in detail. The test results show that the resolution of CO2 detected by this method is 0

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Hello! There is a large amount of sodium bicarbonate (NaHCO3) in the water in the cave, and sodium bicarbonate is easily decomposed into sodium carbonate, water, and carbon dioxide, so there will be a lot of carbon dioxide in the cave.

2NaHCO3=Na2CO3+H2O+CO2 , the numbers in the chemical formula are all foot markers except for the first 2.

There is also no ventilation in the cave.

Mine, are you still satisfied?

Summary. There are three main types of hazards caused by excessive carbon dioxide concentration in caves: 1. Harm to the human body

High concentrations of carbon dioxide will affect people's breathing process, reduce the oxygen in the air, lead to low oxygen partial pressure, and lead to a decrease in the body's blood oxygen partial pressure, which will affect blood circulation, cause dizziness, fatigue, and even suffocation. 2. Harm to wild animals: If the gas concentration in the cave is too high, wild animals will inhale a large amount of toxic gas when breathing, which will directly lead to their death, and because wild animals generally have a strong tolerance, when the carbon dioxide concentration exceeds a certain level, it will be found that many wild animals die.

3. Damage to the geological environment: Excessive carbon dioxide concentration will pollute the soil and groundwater in the cave, resulting in damage to the surrounding environment and affecting the ecological environment of the cave.

Fellow, I really didn't understand, I can be more specific.

There are three main types of hazards of excessive carbon dioxide concentration in the cave: 1. Harm to the human body: high concentration of carbon dioxide will affect people's breathing process, reduce the oxygen in the air, lead to low oxygen partial pressure, and lead to a decrease in the blood oxygen partial pressure of the human body, thereby affecting blood circulation, causing dizziness, fatigue, and even suffocation.

2. Harm to wild animals: If the gas concentration in the cave is too high, wild animals will inhale a large amount of toxic gas when they breathe, which will directly lead to their death, and because wild animals generally have a strong tolerance, when the carbon dioxide concentration exceeds a certain level, many wild animals will be found to die. 3. Geological environment damage:

Excessive carbon dioxide concentration will pollute the soil and groundwater in the cave, resulting in the destruction of the surrounding environment of tolerance and bending, and affecting the ecological environment of the cave.

The air in the cave is filled with carbon dioxide, and the concentration is very high, far exceeding the normal concentration outside. It is difficult to breathe in a cave, and it is easy to experience symptoms such as dizziness, difficulty breathing, and rapid heartbeat. If you are in a cave for a long time, there will be serious harm.

The first reason is that there is a large amount of sodium bicarbonate (NaHCO3) in the water in the cave, and sodium bicarbonate is easily decomposed into sodium carbonate, water, and carbon dioxide, so there will be a lot of carbon dioxide in the cave.

2nahco3=na2co3+h2o+co2↑

The second is that there is no ventilation in the cave due to the early defeat.