Making Sense of Smells A Guide for Understanding Farmstead Odors Part 3: Odor Measurement -- Notes Douglas W. Hamilton Waste Management Specialist Biosystems and Agricultural Engineering
Odors need not be so mysterious … 1.They have structure 2.They are measurable
Odor Measurement How does it smell? How Long? How Much? How Strong?
Odor Measurement How does it smell? How Long? How Much? How Strong? Character
Odor Measurement How does it smell? How Long? How Much? How Strong? Character Persistence
Odor Measurement How does it smell? How Long? How Much? How Strong? Character Persistence Concentration
Odor Measurement How does it smell? How Long? How Much? How Strong? Character Persistence Concentration Intensity
NotesOdors Character Persistence Concentration Intensity Measuring Notes and Odors
NotesOdors CharacterVerbal Description Persistence Concentration Intensity Measuring Notes and Odors
Character Organic Acids Acetic Acid Propionic Acid Butanoic Acid Iso-Valeric Acid Pentanoic Acid Alcohols, Aldehydes, Ketones Methanol Formaldehyde Acetone Methyl Ethyl Ketone Nitrogen Compounds Ammonia Methyl amine Dimethyl amine Diethyl amine Indole Skatole Phenolic Compounds Phenol p-Cresol Sulfuric Compounds Hydrogen Sulfide Methyl mercaptan Dimethyl sulfide Diethyl sulfide
Character Organic Acids Acetic Acid Propionic Acid Butanoic Acid Iso-Valeric Acid Pentanoic Acid Alcohols, Aldehydes, Ketones Methanol Formaldehyde Acetone Methyl Ethyl Ketone Nitrogen Compounds Ammonia Methyl amine Dimethyl amine Diethyl amine Indole Skatole Phenolic Compounds Phenol p-Cresol Sulfuric Compounds Hydrogen Sulfide Methyl mercaptan Dimethyl sulfide Diethyl sulfide
Character Organic Acids Acetic Acid Propionic Acid Butanoic Acid Iso-Valeric Acid Pentanoic Acid Alcohols, Aldehydes, Ketones Methanol Formaldehyde Acetone Methyl Ethyl Ketone Nitrogen Compounds Ammonia Methyl amine Dimethyl amine Diethyl amine Indole Skatole Phenolic Compounds Phenol p-Cresol Sulfuric Compounds Hydrogen Sulfide Methyl mercaptan Dimethyl sulfide Diethyl sulfide
Character Organic Acids Acetic Acid Propionic Acid Butanoic Acid Iso-Valeric Acid Pentanoic Acid Alcohols, Aldehydes, Ketones Methanol Formaldehyde Acetone Methyl Ethyl Ketone Nitrogen Compounds Ammonia Methyl amine Dimethyl amine Diethyl amine Indole Skatole Phenolic Compounds Phenol p-Cresol Sulfuric Compounds Hydrogen Sulfide Methyl mercaptan Dimethyl sulfide Diethyl sulfide
Character Organic Acids Acetic Acid Propionic Acid Butanoic Acid Iso-Valeric Acid Pentanoic Acid Alcohols, Aldehydes, Ketones Methanol Formaldehyde Acetone Methyl Ethyl Ketone Nitrogen Compounds Ammonia Methyl amine Dimethyl amine Diethyl amine Indole Skatole Phenolic Compounds Phenol p-Cresol Sulfuric Compounds Hydrogen Sulfide Methyl mercaptan Dimethyl sulfide Diethyl sulfide
Character Organic Acids Acetic Acid Propionic Acid Butanoic Acid Iso-Valeric Acid Pentanoic Acid Alcohols, Aldehydes, Ketones Methanol Formaldehyde Acetone Methyl Ethyl Ketone Nitrogen Compounds Ammonia Methyl amine Dimethyl amine Diethyl amine Indole Skatole Phenolic Compounds Phenol p-Cresol Sulfuric Compounds Hydrogen Sulfide Methyl mercaptan Dimethyl sulfide Diethyl sulfide
NotesOdors Character Verbal DescriptionOffensiveness Persistence Odor Chord Concentration Intensity Measuring Notes and Odors
NotesOdors Character Verbal Description Persistence Top Note Middle Note Base Note Odor Chord Concentration Intensity Measuring Notes and Odors
Persistence Top NotesMiddle NotesBase Notes Hydrogen Sulfide Ammonia Aldehydes Alcohols Ketones Amines Mercaptans Short Organic Sulfides Organic Acids Phenolic Compounds Indole Skatole Long Organic Sulfides
Persistence Top NotesMiddle NotesBase Notes Hydrogen Sulfide Ammonia Aldehydes Alcohols Ketones Amines Mercaptans Short Organic Sulfides Organic Acids Phenolic Compounds Indole Skatole Long Organic Sulfides
Persistence Top NotesMiddle NotesBase Notes Hydrogen Sulfide Ammonia Aldehydes Alcohols Ketones Amines Mercaptans Short Organic Sulfides Organic Acids Phenolic Compounds Indole Skatole Long Organic Sulfides
Persistence Top NotesMiddle NotesBase Notes Hydrogen Sulfide Ammonia Aldehydes Alcohols Ketones Amines Mercaptans Short Organic Sulfides Organic Acids Phenolic Compounds Indole Skatole Long Organic Sulfides
Persistence Top NotesMiddle NotesBase Notes Hydrogen Sulfide Ammonia Aldehydes Alcohols Ketones Amines Mercaptans Short Organic Sulfides Organic Acids Phenolic Compounds Indole Skatole Long Organic Sulfides
Persistence Top NotesMiddle NotesBase Notes Hydrogen Sulfide Ammonia Aldehydes Alcohols Ketones Amines Mercaptans Short Organic Sulfides Organic Acids Phenolic Compounds Indole Skatole Long Organic Sulfides
Persistence Top NotesMiddle NotesBase Notes Hydrogen Sulfide Ammonia Aldehydes Alcohols Ketones Amines Mercaptans Short Organic Sulfides Organic Acids Phenolic Compounds Indole Skatole Long Organic Sulfides
Persistence Top NotesMiddle NotesBase Notes Hydrogen Sulfide Ammonia Aldehydes Alcohols Ketones Amines Mercaptans Short Organic Sulfides Organic Acids Phenolic Compounds Indole Skatole Long Organic Sulfides
Persistence Top NotesMiddle NotesBase Notes Hydrogen Sulfide Ammonia Aldehydes Alcohols Ketones Amines Mercaptans Short Organic Sulfides Organic Acids Phenolic Compounds Indole Skatole Long Organic Sulfides
Persistence Top NotesMiddle NotesBase Notes Hydrogen Sulfide Ammonia Aldehydes Alcohols Ketones Amines Mercaptans Short Organic Sulfides Organic Acids Phenolic Compounds Indole Skatole Long Organic Sulfides
Persistence Top NotesMiddle NotesBase Notes Hydrogen Sulfide Ammonia Aldehydes Alcohols Ketones Amines Mercaptans Short Organic Sulfides Organic Acids Phenolic Compounds Indole Skatole Long Organic Sulfides NH 3
Persistence Top NotesMiddle NotesBase Notes Hydrogen Sulfide Ammonia Aldehydes Alcohols Ketones Amines Mercaptans Short Organic Sulfides Organic Acids Phenolic Compounds Indole Skatole Long Organic Sulfides NH 3 H 3 C-NH-CH 3
Persistence Top NotesMiddle NotesBase Notes Hydrogen Sulfide Ammonia Aldehydes Alcohols Ketones Amines Mercaptans Short Organic Sulfides Organic Acids Phenolic Compounds Indole Skatole Long Organic Sulfides NH 3 H 3 C-NH-CH 3 N CH 3
NotesOdors Character Verbal Description Persistence Top Note Middle Note Base Note Odor Chord Concentration Detection Level Recognition Level Intensity Measuring Notes and Odors
NH 3 Recognition Level = 37,000 ppb
NH 3 Detection Level = 17 ppb
NH 3 Acute Hazard = 50,000 to 100,000 ppb
NH 3 Chronic Exposure = 25,000 ppb