Table 1 List of all identified odorants in the sample by means of GC-O and their characteristics.

From: Characterization of off-odours and potentially harmful substances in a fancy dress accessory handbag for children

No.

Odorant

Odour qualitya

Ri valueb on

FD-factorc on

Identified by

DB-FFAP

DB-5

DB-FFAP

DB-5

1

(E)-Non-2-enal

fatty

1521

1156

≥729

81

d

2

(E)-Oct-2-enal

fatty, peanut-like

1058

27

i

3

(E,E)-Deca-2,4-dienal

fatty, peanut-like

1808

≥729

i

4

(E,E)-Nona-2,4-dienal

fatty, peanut-like

1686

1212

≥729

≥729

d

5

(E,E)-Nona-2,6-dienal

cucumber-like, green

1153

81

i

6

(E,E)-Octa-2,4-dienal

cucumber-like

1579

1100

81

81

h

7

(E,Z)-Nona-2,4-dienal

fatty, cucumber-like

1657

1189

243

27

h

8

(Z)-Non-2-enal

green

1493

27

i

9

1,2-Dimethylnaphthalene

naphthalene-like

2042

1453

≥729

243

d, e

10

1,4-Dimethylnaphthalene

naphthalene-like

1457

n.d.

n.d.

g

11

1,5-Dimethylnaphthalene

naphthalene-like

2017

n.d.

n.d.

f

12

1,6-Dimethylnaphthalene

naphthalene-like

1440

n.d.

n.d.

g

13

1,7-Dimethylnaphthalene

naphthalene-like

1978

n.d.

n.d.

f

14

1-Methylnaphthalene

naphthalene-like

1869

1306

≥729

27

e

15

2,3,5-Trimethylnaphthalene

naphthalene-like, leather-like

2155

9

d

16

2,6-/2,7-Dimethylnaphthalene

anise-like

1948

1420

n.d.

n.d.

f, g

17

2-/3-Methylbutanoic acid

cheesy

863

9

i

18

2-Methylnaphthalene

naphthalene-like

1831

1294

≥729

243

e

19

3-Ethylphenol

phenolic, leather-like

2173

≥729

d

20

3-Methylisoquinoline

sweet, portable toilet-like

1975

1325

243

≥729

d

21

Acetophenone

almond-like, solvent-like

1643

1076

81

9

h

22

Benzothiazole

car tire-like

1917

1221

9

81

h

23

Butanoic acid

cheesy

1629

27

i

24

Dodecanoic acid

fatty, fishy

2470

1573

81

81

h

25

Hex-1-en-3-one

glue-like

<800

27

i

26

Hexanal

cut grass-like, tomato-like, green

1077

806

81

81

h

27

Naphthalene

mouldy, naphthalene-like

1719

1183

243

≥729

e

28

Nonanal

green, grassy

1381

1111

81

9

h

29

Oct-1-en-3-one

mushroom-like

1288

979

27

27

h

30

Octanal

cucumber-like, green

1276

1000

9

27

h

31

p-Cresol

horse stable-like

2075

1087

243

81

d

32

Phenylacetic acid

honey-like

2550

81

i

33

Raspberry ketone

sweet, berry-like

2973

1560

≥729

≥729

h

34

Rotundone

pepper-like

2245

1715

≥729

≥729

h

35

Sotolone

spicy

2191

1117

≥729

27

h

36

trans-4,5-Epoxy-(E)-dec-2-enal

sweet, metallic

1942

1381

81

≥729

d

37

Vanillin

vanilla-like

2560

1400

≥729

≥729

d

38

γ-Octalactone

sweet, coconut-like

1265

81

i

  1. aOdour quality perceived at the sniffing port during GC-O analysis.
  2. bRetention index on capillaries DB-FFAP and DB-5 according to24.
  3. cFD: determined flavour-dilution factor according to25.
  4. dThe compound was identified by comparison of odour quality, retention index on both capillaries and mass spectrum (MS-EI), obtained by 2D-GC-MS/O analysis, with the properties of the reference compound.
  5. eThe compound was identified by comparison of odour quality, retention index on capillary DB-FFAP and mass spectrum (MS-EI), obtained by GC-MS/O analysis, with the properties of the reference compound.
  6. fThe compound was identified by comparison of retention index on capillary DB-FFAP and mass spectrum (MS-EI) only, obtained by GC-MS/O analysis, with the properties of the reference compound.
  7. gThe compound was identified by comparison of retention index on capillary DB-5 and mass spectrum (MS-EI) only, obtained by GC-MS/O analysis, with the properties of the reference compound.
  8. hThe compound was identified by comparison of odour quality and retention indices on capillaries DB-FFAP and DB-5.
  9. iProposed structure by comparison of odour quality and retention index on capillaries DB-FFAP or DB-5.
  10. n.d. not determined.