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Question

What ppm does H2S stop smelling?


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Solution

ppm:

  • ppm can be abbreviated as “parts per million” and is also expressed in milligrams per liter (mg/L).
  • Hydrogen sulfide (H2S) is a colorless, flammable gas that smells like rotten eggs at lower concentration levels in the air.
  • The odor of H2S cannot be detected above 100parts per million (100ppm).
  • Hence, H2S stop smelling at 100ppm.

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