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Hydrogen Sulfide Odor Threshold

On the odor threshold of hydrogen sulfide

All things in the world have their own characteristics. Among gases, hydrogen sulfide is special, and the study of its odor threshold is quite profound.

Hydrogen sulfide has a pungent and rancid smell, just like the fermentation of rotten matter in a damp place. The so-called odor threshold is the lowest concentration that people can perceive the smell of the gas.

The determination of the odor threshold of hydrogen sulfide is quite rigorous. Due to differences in different environments and individual senses, its value also varies. In a clean and well-ventilated room, hydrogen sulfide gas is slowly released with professional equipment, so that the tester stays in it and gradually increases the concentration until it can perceive the odor. At this time, the concentration is the odor threshold of hydrogen sulfide.

Generally speaking, the odor threshold of hydrogen sulfide for ordinary people is about a few ppm. However, this is not an absolute number. The young, the elderly or people with keen senses may be able to perceive it at a lower concentration; while those who have been in a peculiar odor environment for a long time and have a slightly dulled sense of smell have a slightly higher detection threshold.

Knowing the odor threshold of hydrogen sulfide is of great significance. In the workshop, if the concentration of hydrogen sulfide in the air is close to the threshold, one must be vigilant and take precautions. Because of its toxicity, if the concentration is slightly increased, In the field of environmental monitoring, the odor threshold can be measured to detect the degree of air pollution, so as to rectify in time and keep the air fresh.

Therefore, the study of the odor threshold of hydrogen sulfide is related to life safety and the beauty of the environment.