How to identify H2S gas, avoid the risk of poisoning?

In nature, H ₂ S gas has a very strong and fast effect on the body, similar to cyanide poison.

According to the US Occupational Safety and Health Administration, H ₂ S is a toxic gas compound with a characteristic rotten egg smell.

Many cases of H ₂ S poisoning have led to death - (Image: GETTY IMAGES).

In nature, H ₂ S gas is often in volcanic gas or generated from rotting proteins during the decomposition of certain types of organic matter, in closed tunnels, garbage pipes, deep wells. .

Fishing compartments on ships can also be a source of abundant H2S.

Depending on the concentration of H2S, the danger of this gas will be different. Due to its ability to deprive oxygen very strongly, H ₂ S gas is easy to cause asphyxiation.

Also according to the document of the US Occupational Safety and Health Administration, the concentration of H ₂ S gas below 0.025ppm gives an unclear odor, depending on whether people can feel it or not. With a concentration of 3-5ppm, H ₂ S gas gives a clearer smell, like rotten egg.

H ₂ S gas is often found in enclosed vaults, tanks . - (Photo: TIMPLUS56.RU).

Concentration is about 100ppm, the gas has a strong smell, irritates the pleura, if breathing for about 1 hour, eyes and respiratory tract irritated. Continued inhalation for more than 8 hours in a row can be fatal.

Concentrating about 400ppm to 700ppm, the gas will be life-threatening in just about 30 minutes, concentrations above 800ppm are likely to cause loss of consciousness in distress and danger of instant death.

According to a study by the National Center for Biotechnology Information (USA), in nature, H ₂ S gas has a very strong and fast impact on the body similar to cyanide poison.

According to statistics in the US, an average of 24% of H ₂ S gas poisoning incidents occur during waste disposal, 18% in the natural gas industry.

In particular, 87% of H ₂ S asbestos deaths occurred at the scene, 21% of accidents often had two or more deaths. Many of the main cases of people rushing in to rescue or assist victims are deaths.

The scene of the H ₂ S gas accident accident in Alabama in 2002 - (Photo: GETTY IMAGES)

In the journal Nature , experts recommend that people in the process of working and living if they detect the smell of rotten eggs - the characteristic smell of H ₂ S gas - should pay attention to protect themselves immediately.

If you have a headache, dizzy with the smell of rotten eggs, need to quickly go to an open place, if severe, you can lay oxygen.

Places such as wells, water tanks often have high H ₂ S gas, so when cleaning, pay attention to not be poisoned by gas. Before cleaning the tank or tunnel, it is possible to blow fans or spray oxygen; When carrying out cleaning, it is necessary to take the initiative to have protective equipment.

When workers are forced to go into sewers, tunnels, etc., there must be supporters on the top and can be tied to people to handle in case of emergency.

1. Science says: Smelling "fart" dislikes the risk of cancer, stroke
2. Why does "farting" smell rotten?