Looking for an electronic nose

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SUMMARY

The discussion centers on the search for an electronic nose, specifically a device capable of identifying and quantifying odor elements in a compound. A gas chromatograph (GC) is suggested as a potential solution, with historical context provided regarding its use in measuring volatile organic compounds (VOCs). The user expresses a need for modern alternatives, such as integrated circuits (ICs) that can detect a wide range of smells. The conversation highlights the evolution of this technology since the user's experience in the late 1970s.

PREREQUISITES
  • Understanding of gas chromatography (GC) principles
  • Familiarity with volatile organic compounds (VOCs)
  • Knowledge of integrated circuits (ICs) for odor detection
  • Basic data analysis skills for interpreting results in spreadsheets or databases
NEXT STEPS
  • Research modern gas chromatograph models and their specifications
  • Explore integrated circuits designed for olfactory sensing
  • Learn about the latest advancements in electronic nose technology
  • Investigate data analysis techniques for interpreting chromatographic results
USEFUL FOR

Individuals interested in chemical analysis, engineers developing sensory technology, and researchers in fields related to odor detection and analysis will benefit from this discussion.

getusama
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Hi

I do not have much knowledge on engineering but please would someone help me look for a device like

an electrical nose and tell me how I could acquire one.

Let me be more descriptive:
Say, this device might have a comopund attached to it that is made up of all kinds of odor elements.
Now, using this device it should be able to sense and tell me what elements and its percentage

quantity (from that compound) a certain odor is made up of.
The end result could come out in a spreadsheet or a database.

I earnestly look forward to a reply and any help will be much appreciated.


Regards
 
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It sounds like you want a gas chromatograph. Very expensive equipment.

Edit: BTW, the technology has probably improved a lot since I was a process chemist in a pulp mill (1978-1982), but we were using a Hewlett Packard GC that was big and bulky. You'd inject a syringe of sample through an injection port into a heated column. You would know approximately how much of each volatile organic compound was in the sample. Just study the graphic printout. A weakness of the system was that you'd have to change columns to measure VOCs of higher or lower molecular weights.
 
Last edited:
There are ICs that smell. I forget how many distinct sensors they need to cover 95% of smells. Perhaps they measure how many new molecules of a substance has landed on each sensor.
 
I know that such things exist, but I haven't the slightest idea where to find them.
 
Galap said:
I know that such things exist, but I haven't the slightest idea where to find them.
http://pubs.acs.org/doi/abs/10.1021/ac0312460
 
Thanks everyone. Any more help?
 

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