Odor Detection Threshold: Difference between revisions
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* | *[https://en.wikipedia.org/wiki/Odor_detection_threshold The Wikipedia Page on the Odor Detection Threshold] | ||
[[Category: Safety]] [[Category: Bio-Petrochemistry]] | |||
Latest revision as of 20:00, 16 July 2022
Basics
- This is a measure of what concentration of a substance is needed in air in order for it to be smelled
- Not only does it vary from chemical to chemical, but it also varies person to person, and with each person's age/health (Loss of Taste and Smell is a symptom of COVID-19, and even congestion can effect the Odor Detection Threshold)
- Also one can experience Olfactory fatigue (aka "Nose Blindness" ) and thus gradually loose detection of the hazard
- Despite this there is use to the estimate to get an idea of about when it should be detected
- An issue is for some chemicals the Median Lethal Dose and/or the Lower Explosive Limit can be below the Odor Detection Threshold, thus waiting to smell the chemical before evacuating etc may not work
Internal Links
- Gas Odorization (The use of an Odorant to make a gas with no scent have an artificially high Odor Detection Threshold, so that leaks can be detected)
- Portable Gas Detector / Portable Gas Monitor (These are small units that fill a role akin to a Dosimeter / Noise Dosimeter but for various gases, typically they measure either a single gas, "4 Gas Detectors" that measure Oxygen, Carbon Monoxide , Hydrogen Sulfide , (Hydrocarbon) Combustible Gasses (And typically calculate a LEL
- As long as these are Calibrated they are far more effective than scent, and a must for Confined Space work, as well as Refineries etc