Inhale hydrogen sulfide. Yes, what are the symptoms?

This post was last edited by 654262293 on 2010-12-15 at 12:51. Low concentrations have a significant local irritant effect on the respiratory tract and eyes, causing nausea, vomiting, and chest tightness; they also affect the nervous system. High concentrations cause acute pulmonary edema and respiratory and cardiac arrest; severe poisoning leads to spasms, coma, and even death. Chronic poisoning can cause neurasthenia, accompanied by tachycardia or bradycardia, loss of appetite, nausea, and vomiting. A concentration of 1/100,000 in the air can be detected, while a concentration of 1/2,000 can cause poisoning. At high concentrations, the taste is less pronounced than at low concentrations, and it may even be tasteless. Hydrogen sulfide is a highly irritating and toxic gas; according to the classification standards for the degree of hazard associated with occupational exposure to toxins, hydrogen sulfide is classified as Grade II, which indicates a high level of hazard.

I experienced it firsthand: during a shutdown, the boundary valve wasn’t closed properly, which caused a leak in the deodorant treatment pipeline. I went up to close the valve and was exposed to the fumes; I persisted in closing it despite that. Then I felt my vision go dark and my limbs become numb and weak, as if I were suffering from oxygen deficiency. I quickly tried to walk away – about 5-6 steps – but then my legs gave way and I fell. I couldn’t speak either; I must have lost consciousness before hitting the ground, so I wasn’t even aware that my face was injured. Someone helped me out of the facility, and it took 4-5 minutes before I regained consciousness. I went to the hospital where I received hyperbaric oxygen therapy; I had headaches for several days. According to what others said, taking Eleutherococcus root helped relieve the headaches over time. In fact, after hydrogen sulfide poisoning, high-pressure oxygen therapy should be administered several times to facilitate a faster recovery

It’s best not to have such an experience! Neurotoxic gases don’t have a pleasant smell.

I experienced a leak of sulfur-containing wastewater (containing hydrogen sulfide) once; the overflow occurred because the valve controlling the discharge was opened too wide, resulting in a large amount of wastewater spilling onto the ground. In that urgent situation, I didn’t have time to put on an air respirator, so I quickly covered my nose with one hand, held my breath, narrowed my eyes, and rushed to the valve to close it with my other hand. At that time I knew breathing must be impossible; although there was no breathing, the highly concentrated hydrogen sulfide made it impossible to keep one’s eyes open. Even with them narrowed, the irritation was too much to allow the eyes to stay open. If one had breathed at that time, the consequences would have been unimaginable.

This post was last edited and replied to by 654262293 on 2010-12-20 at 11:21. Reply 5# adsl121: \"It’s best to have actual experience from one’s own experiences, or from others’ experiences; it’s hard to determine the right standard, so it’s better not to go through such things at all!\"

The problem mentioned by the original poster isn’t that serious; it’s the experiences of those who commented above that are quite frightening. H2S was used as a chemical weapon in both World Wars, so it’s better to be careful when working