Table 2 Percentage of total ion chromatogram (TIC) peak areas and number of peaks for each molecular ions observed in the TD-GC/MS analysis of monoterpenes.

From: In-situ TD-GCMS measurements of oxidative products of monoterpenes at typical vaping temperatures: implications for inhalation exposure to vaping products

 

CIS Temperature

Parent (M = 136)

M = 132^

M = 134

Other M = 136

M = 138^

M = 150

M = 152

M = 154^

α-Pinene

100 C

42.6

ND

10.0

12.7

ND

3.7

31.0

ND

150 C

78.7

ND

4.1

5.9

ND

1.9

9.3

ND

200 C

60.4

ND

9.4

9.4

ND

4.5

16.3

ND

Average

60.6

NA

7.8

9.3

NA

3.4

18.9

NA

# of Peaks

NA

NA

(5)

(2)

NA

(2)

(4)

NA

β-Pinene

100 C

74.1

ND

1.6

7.3

3.1

4.8

9.0

ND

150 C

73.4

ND

0.4

9.9

2.4

5.0

8.8

ND

200 C

52.4

ND

1.0

11.7

6.6

9.4

18.9

ND

Average

66.7

NA

1.0

9.6

4.0

6.4

12.3

NA

# of Peaks

NA

NA

(2)

(5)

(1)

(2)

(3)

NA

Myrcene

100 C

97.5

ND

ND

2.5

ND

ND

ND

ND

150 C

98.0

ND

0.0

1.9

ND

ND

ND

ND

200 C

97.8

ND

0.2

2.1

ND

ND

ND

ND

Average

97.8

NA

0.1

2.2

NA

NA

NA

NA

# of Peaks

NA

NA

(1)

(3)

NA

NA

NA

NA

Limonene

100 C

83.9

ND

1.1

ND

ND

3.8

11.1

ND

150 C

93.3

0.2

1.2

0.2

ND

1.8

3.4

ND

200 C

92.0

0.4

1.5

0.1

ND

2.3

3.7

ND

Average

89.7

0.3

1.3

0.2

NA

2.6

6.1

NA

# of Peaks

NA

(1)

(2)

(1)

NA

(2)

(9)

NA

Terpinolene

100 C

13.1

3.7

3.3

ND

ND

14.3

55.3

8.8

150 C

27.6

6.1

3.1

ND

ND

13.3

41.5

7.2

200 C

11.4

23.9

6.5

ND

ND

35.8

14.1

7.9

Average

17.4

11.2

4.3

NA

NA

21.1

37.0

7.9

# of Peaks

NA

(1)

(4)

NA

NA

(1)

(5)

(1)

  1. ND, not detected; NA, not applicable.
  2. *System residual is the sum of peak areas detected in the blank, presented as percentage of sum of peaks area in the sample run.
  3. ^Possible structure: M = 132, p-(1-propenyl)-toluene (C10H12); M = 138, β-pinone (C9H14O); M = 154, fenchol (C10H18O). Mass spectra of these three peaks are provided in Figure S2, S3 and S4, respectively, in SI.