Asphyxiant gases

Asphyxiant gases are a category of gases that can cause asphyxia, a condition in which the body or a region of the body is deprived of oxygen. This can occur when the concentration of oxygen in the air is reduced, typically by the presence of a high concentration of an asphyxiant gas.

Types of Asphyxiant Gases

There are two types of asphyxiant gases: simple asphyxiants and chemical asphyxiants.

Simple asphyxiants are gases that displace oxygen in the air. They do not have a toxic effect; their danger comes from their ability to reduce the concentration of oxygen in the air to a level that is unsafe for humans. Examples of simple asphyxiants include nitrogen, helium, neon, argon, krypton, and xenon.

Chemical asphyxiants are gases that prevent the body from using the oxygen that is available in the air. They do this by interfering with the body's oxygen transport or cellular respiration processes. Examples of chemical asphyxiants include carbon monoxide, hydrogen cyanide, and hydrogen sulfide.

Effects of Asphyxiant Gases

Exposure to asphyxiant gases can lead to a variety of symptoms, depending on the concentration of the gas and the duration of exposure. Symptoms can range from mild, such as dizziness, shortness of breath, and confusion, to severe, such as loss of consciousness, seizures, and even death.

Prevention and Treatment

Prevention of exposure to asphyxiant gases primarily involves proper ventilation and the use of personal protective equipment when handling these gases. In the event of exposure, treatment typically involves removing the individual from the source of the gas and providing oxygen therapy.

See Also

• Toxicology
• Industrial hygiene
• Occupational safety and health