Table 7.
Comparing rank of top 10 most concentrated VOCs with the calculated OAV in all cocaine samples. Bolded font signifies 1 g real cocaine (sample code D4/D5). Underlined font signifies 1 g surrogate cocaine (sample code E1).
| Compound | CAS | Sample Code | Rank conc. | Rank OAV | Change in ranking (Rank Conc. – Rank OAV) | |
|---|---|---|---|---|---|---|
| Isobutanol | 78-83-1 | D | 1 | 1 | 37 | −36 |
| Isobutyraldehyde | 78-84-2 | D | 2 | 1 | 1 | 0 |
| Acetic acid | 64-19-7 | D | 3 | 1 | 2 | −1 |
| Acetic acid | 64-19-7 | D | 4 | 1 | 1 | 0 |
| Acetic acid | 64-19-7 | D | 5 | 1 | 1 | 0 |
| Methyl benzoate | 93-58-3 | E | 1 | 1 | 1 | 0 |
| n-Propyl acetate | 109-60-4 | D | 1 | 2 | 8 | −6 |
| Isobutane | 75-28-5 | D | 2 | 2 | 7 | −5 |
| n-Propyl acetate | 109-60-4 | D | 3 | 2 | 9 | −7 |
| Ethylene oxide | 75-21-8 | D | 4 | 2 | 23 | −21 |
| n-Propyl acetate | 109-60-4 | D | 5 | 2 | 2 | 0 |
| Isobutyrophenone | 611-70-1 | E | 1 | 2 | 12 | −10 |
| Acetone | 67-64-1 | D | 1 | 3 | 20 | −17 |
| 4-methyldecane | 2847-72-5 | D | 2 | 3 | 17 | −14 |
| Phenylethyl alcohol | 60-12-8 | D | 3 | 3 | 1 | +2 |
| n-Propyl acetate | 109-60-4 | D | 4 | 3 | 4 | −1 |
| Ethylacetate | 141-78-6 | D | 5 | 3 | 10 | −7 |
| Ethylene oxide | 75-21-8 | E | 1 | 3 | 8 | −5 |
| Butane | 106-97-8 | D | 1 | 4 | 30 | −26 |
| 2-methylpentane | 107-83-5 | D | 2 | 4 | 18 | −14 |
| Toluene | 108-88-3 | D | 3 | 4 | 10 | −6 |
| Ethylacetate | 141-78-6 | D | 4 | 4 | 8 | −4 |
| 2-butanone | 78-93-3 | D | 5 | 4 | 12 | −8 |
| 2-chloroacetophenone | 532-27-4 | E | 1 | 4 | 3 | +1 |
| Tetradecane | 629-59-4 | D | 1 | 5 | 38 | −33 |
| 3,4,5-trimethyl-1-hexene | 56728-10-0 | D | 2 | 5 | 19 | −14 |
| 2-chloroacetophenone | 532-27-4 | D | 3 | 5 | 3 | +2 |
| Diacetone alcohol | 123-42-2 | D | 4 | 5 | 7 | −2 |
| Diacetone alcohol | 123-42-2 | D | 5 | 5 | 8 | −3 |
| Dodecane | 112-40-3 | E | 1 | 5 | 6 | −1 |
| Ethylacetate | 141-78-6 | D | 1 | 6 | 10 | −4 |
| Isopropyl alcohol | 67-63-0 | D | 2 | 6 | 9 | −3 |
| Benzaldehyde | 100-52-7 | D | 3 | 6 | 4 | +2 |
| Acetone | 67-64-1 | D | 4 | 6 | 14 | −8 |
| Acetone | 67-64-1 | D | 5 | 6 | 18 | −12 |
| Ethyl octanoate | 106-32-1 | E | 1 | 6 | 2 | +4 |
| Propanoic acid | 79-09-4 | D | 1 | 7 | 1 | +6 |
| Ethanol | 64-17-5 | D | 2 | 7 | 11 | −4 |
| 2-ethylhexanol | 104-76-7 | D | 3 | 7 | 7 | 0 |
| 1,2-diethyl hydrazine | 1615-80-1 | D | 4 | 7 | 29 | −22 |
| Ethyl lactate | 97-64-3 | D | 5 | 7 | 13 | −6 |
| Decane | 124-18-5 | E | 1 | 7 | 7 | 0 |
| Methyl benzoate | 93-58-3 | D | 1 | 8 | 5 | +3 |
| Propylene glycol | 57-55-6 | D | 2 | 8 | 20 | −12 |
| 2-butanone | 78-93-3 | D | 3 | 8 | 18 | −10 |
| Isopropyl alcohol | 67-63-0 | D | 4 | 8 | 16 | −8 |
| Hexane | 110-54-3 | D | 5 | 8 | 21 | −13 |
| 1-undecanol | 112-42-5 | E | 1 | 8 | 5 | +3 |
| 2-chloroacetophenone | 532-27-4 | D | 1 | 9 | 2 | +7 |
| Acetone | 67-64-1 | D | 2 | 9 | 10 | −1 |
| Ethylacetate | 141-78-6 | D | 3 | 9 | 13 | −4 |
| Propylene glycol | 57-55-6 | D | 4 | 9 | 30 | −21 |
| Methyl thiocyanate | 556-64-9 | D | 5 | 9 | 5 | +4 |
| Cyclohexane | 110-82-7 | E | 1 | 9 | 11 | −2 |
| Isobutyrophenone | 611-70-1 | D | 1 | 10 | 39 | −29 |
| methylhydrazine | 60-34-4 | D | 2 | 10 | 21 | −11 |
| Isobutyraldehyde | 78-84-2 | D | 3 | 10 | 5 | +5 |
| 2-Hydroxyethylhydrazine | 109-84-2 | D | 4 | 10 | 31 | −21 |
| Isopropyl alcohol | 67-63-0 | D | 5 | 10 | 20 | −10 |
| Acetone | 67-64-1 | E | 1 | 10 | 10 | 0 |
Code, see Section 1.5, corresponding to sample identification. ODT=odor detection threshold from Devos et al., [5].