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Making Sense of Smells A Guide for Understanding Farmstead Odors

Douglas W. Hamilton Waste Management Specialist Biosystems and Agricultural Engineering. Making Sense of Smells A Guide for Understanding Farmstead Odors. Part 3: Odor Measurement -- Notes. Odors need not be so mysterious …. They have structure They are measurable. How does it smell?

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Making Sense of Smells A Guide for Understanding Farmstead Odors

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  1. Douglas W. Hamilton Waste Management Specialist Biosystems and Agricultural Engineering Making Sense of SmellsA Guide for Understanding Farmstead Odors Part 3: Odor Measurement -- Notes

  2. Odors need not be so mysterious … • They have structure • They are measurable

  3. How does it smell? How Long? How Much? How Strong? Odor Measurement

  4. How does it smell? How Long? How Much? How Strong? Character Odor Measurement

  5. How does it smell? How Long? How Much? How Strong? Character Persistence Odor Measurement

  6. How does it smell? How Long? How Much? How Strong? Character Persistence Concentration Odor Measurement

  7. How does it smell? How Long? How Much? How Strong? Character Persistence Concentration Intensity Odor Measurement

  8. Measuring Notes and Odors

  9. Measuring Notes and Odors

  10. Character

  11. Character

  12. Character

  13. Character

  14. Character

  15. Character

  16. Measuring Notes and Odors

  17. Measuring Notes and Odors

  18. Persistence

  19. Persistence

  20. Persistence

  21. Persistence

  22. Persistence

  23. Persistence

  24. Persistence

  25. Persistence

  26. Persistence

  27. Persistence

  28. Persistence NH3

  29. Persistence NH3 H3C-NH-CH3

  30. Persistence NH3 CH3 H3C-NH-CH3 N

  31. Measuring Notes and Odors

  32. NH3 Recognition Level = 37,000 ppb

  33. NH3 Detection Level = 17 ppb

  34. NH3 Acute Hazard = 50,000 to 100,000 ppb

  35. NH3 Chronic Exposure = 25,000 ppb

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