Poisoning sulfide

Hydrogen - colourless gas, heavier than air, is one of the components of the so-called kloachnye gas. In low concentrations has a smell of rotten eggs, in high concentrations has a cauterizing effect on the nerves of the nasal mucosa, and therefore melewati. Is formed by the decay of organic substances containing sulphur, the decomposition of rocks and minerals, containing hydrogen sulfide compounds. Occurs in mines and mines, explosive works, often formed in sewage networks, pit and the sewers.
The hydrogen sulfide poisoning, usually the result of an accident. Basically enters the body through the respiratory tract. Provided mainly kidneys in the form of oxidized sulphur compounds and partially light in an unmodified form, giving a specific smell exhaled air.
Hydrogen is highly toxic poison with a strong irritant effect on the nervous system, mucous membranes of eyes and respiratory tract. Its action is similar to the action of cyanide compounds: oppressing enzymes of tissue respiration (linking iron in the cytochromes), causing tissue hypoxia.
The severity of poisoning depends on the concentration of poison in the air we breathe. Severe poisoning flow by type of convulsive coma - coming fast and deep loss of consciousness, followed by convulsions, oppression reflexes, hallucinations, the defeat of the cardiovascular activity and respiration, toxic pulmonary edema. Coma can result in death. At very high concentrations may develop fulminant form of poisoning, leading to an almost instant death from paralysis of the respiratory system.
The section had died from acute poisoning sulfide celebrated painting acute onset of death; from cavities, internal organs, especially the lungs, there is the smell of rotten eggs; the blood and internal organs cherry-red color. On judicial-chemical study take blood, brain, lungs, liver, kidneys in the urine. Also produce air analysis where poisoning. Maximum permissible concentration of hydrogen sulfide in the air 10 mg/m3.