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Table 2 Peak intensities of all detected volatile organic compounds detected in gas from designated sources

From: Volatile organic compounds in ventilated critical care patients: a systematic evaluation of cofactors

IMS-Peak

Volatile Organic Compound

Patient

Inspiration

O2

Compressed Air

O2 Cylinder

Room Air

P1 *

Acetone monomer

71

(60.1–81.9)

6

(4.8–7.3)

        

P2 *

Acetone dimer

137

(91–183)

      

5

(3.4–6.6)

12.1

(10.6–13.6)

P3 *

Benzofuran

4.9

(3.2–6.5)

      

2.7

(2–3.4)

  

P4 *

Butanal monomer

7.6

(6.2–9)

          

P5 *

Butanal dimer

4.6

(3.8–5.3)

          

P6 *

1.2-Butandiol

5

(4.2–5.8)

          

P7 *

2.3-Butandiol

6.9

(5.9–7.8)

          

P8 *

2-Butanone

15.2

(10.5–19.9)

      

25.8

(14–37.6)

3.2

(2.8–3.6)

P9 *

(+)Camphene

8.8

(7.2–10.4)

          

P10 *

Cyclohexanol monomer

17.7

(12.3–23.1)

        

10.3

(9.2–11.4)

P11 *

Cyclohexanol dimer

8.9

(7.8–10)

          

P12 *

Cyclohexanone monomer

175

(160–190)

        

9.7

(9.3–10.1)

P13 *

Cyclohexanone dimer

4

(3.4–4.6)

          

P14 *

p-Cymol

4

(3.1–4.8)

        

4

(3.8–4.3)

P15 *

Dimethyl disulphide monomer

88

(68.9–107)

10

(8.7–11.3)

34.2

(32.8–35.6)

8.8

(7.5–10)

18.3

(16.2–20.4)

44.4

(42.3–46.5)

P16 *

Dimethyl disulphide dimer

7.6

(6.3–8.9)

        

12.7

(12–13.4)

P17 *

2.5-Dimethylpyrazin

98.3

(58.9–138)

        

7.6

(7–8.2)

P18 *

Ethanol

5.5

(2.9–8.2)

      

9.1

(6.6–11.7)

26.7

26.7

P19 *

Ethylbenzene

35.8

(22–49.6)

      

6.2

(3.8–8.6)

12.2

(11.2–13.2)

P20

2-Ethyl-1-hexanol

          

4.1

(3.9–4.4)

P21 *

Heptanal

9.9

(9–10.9)

          

P22 *

2-Heptanone

13.5

(11.9–15.1)

          

P23 *

3-Heptanone

20.4

(18.2–22.6)

          

P24 *

Hexanal

7.4

(6.8–8)

          

P25 *

1-Hexanol

10.5

(8.8–12.2)

          

P26 *

2-Hexanol

16.2

(13.4–19)

          

P27 *

2-Hexanone

7.1

(6.3–7.9)

          

P28 *

3-Hydroxy-2-Butanone

66.8

(43.7–89.9)

      

1.9

(1.5–2.2)

86.6

(76.6–96.6)

P29 §

Isoprene monomer

  

8.1

(7.7–8.5)

    

54.2

(31.2–77.2)

10.6

(8.8–12.4)

P30 *

Isoprene dimer

4.5

(3.7–5.3)

        

3.6

(3.3–3.8)

P31 *

Menthone

14.5

(12.9–16.1)

          

P32 *

Methanol

107

(102–112)

45.9

(36.8–55)

98.2

(96.7–99.7)

87.4

(85.3–89.5)

101

(97.2–105)

98

(97–99)

P33 *

3-Methylbutanal

11.2

(9.3–13.1)

          

P34 *

2-Methylbutylacetat

7.1

(6.3–7.8)

          

P35 *

2-Methylfuran

26.2

(15.3–37.1)

3.9

(3.5–4.4)

    

3.4

(2.3–4.5)

13.8

(11.9–15.7)

P36 *

2-Methylpentane

15.3

(10.4–20.2)

6

(5.2–6.8)

    

51.3

(29.2–73.4)

27.8

(24.1–31.5)

P37 *

n-Nonane

83.4

(66.5–100)

          

P38 *

2.2.4.6.6-Pentamethylheptan

7.7

(6.3–9)

          

P39 *

1-Pentanol

17.9

(12.3–23.5)

          

P40 *

2-Pentanone

130

(86.8–173)

      

5.7

(4–7.5)

3.8

(3.5–4.1)

P41 *

3-Pentanone monomer

230

(167–294)

        

35.5

(31.7–39.3)

P42 *

3-Pentanone dimer

21.1

(20–22.2)

        

5.6

(5.5–5.7)

P43 *

Phenylacetylene monomer

96.9

(79.2–115)

        

5

(4.7–5.3)

P44 *

Phenylacetylene dimer

19.4

(15.3–23.5)

        

6.1

(5.8–6.5)

P45 *

1-Propanol

5.8

(4.8–6.8)

          

P46 *

2-Propanol monomer

22

(17.2–26.8)

      

11.4

(6.8–16)

44.9

(38.8–51)

P47 *

2-Propanol dimer

4.7

(4–5.5)

          

P48 *

Propofol

23.2

(19.6–26.8)

          

P49 *

 

36.2

(33.1–39.3)

    

4.5

(4.1–5)

  

24.3

(24–24.6)

P50 *

 

43.6

(34.6–52.6)

17.5

(15.4–19.7)

6.1

(4.6–7.6)

5.1

(3.8–6.5)

2.8

(1.7–3.8)

2.7

(2.1–3.2)

P51 *

 

20.9

(14.5–27.3)

12.2

(10.2–14.2)

4.9

(3.7–6)

4.3

(3.2–5.3)

0.9

(0.2–1.6)

2.1

(1.7–2.4)

P52 *

 

15.8

(12.3–19.4)

        

9.1

(8.3–10)

P53 *

 

13.8

(12.9–14.7)

          

P54 *

 

4.6

(3.9–5.3)

          

P55 *

 

43.5

(37.8–49.2)

        

3.1

(2.3–4)

P56 *

 

7.1

(5.7–8.5)

          

P57 *

 

9.9

(6.9–13)

          

P58 *

 

2.4

(2–2.7)

          

P59 *

 

3.5

(1.2–5.7)

        

3.7

(3.5–4)

P60 *

 

4.7

(4.1–5.4)

          

P61 *

 

5.3

(3.6–7)

          

P62 *

 

2.8

(2.3–3.3)

          

P63 *

 

3.7

(3–4.3)

          

P64 *

 

5.1

(3.9–6.4)

          

P65 *

 

5.9

(3.6–8.3)

        

8.4

(7.6–9.2)

P66 *

 

6.2

(4–8.3)

3.2

(2.8–3.7)

      

4.8

(4.2–5.3)

P67 #

 

3.7

(1.1–6.2)

3.5

(3.1–4)

    

4.9

(3.5–6.3)

5.8

(5.1–6.5)

P68 *

 

1.8

(1.3–2.2)

          

P69 *

 

4

(2.6–5.3)

          

P70 *

 

8

(3.4–12.6)

          

P71 *

 

2.1

(1.5–2.6)

          

P72 *

 

15.6

(13.9–17.3)

3.1

(2.5–3.6)

        

P73 *

 

4.6

(2.3–6.8)

      

3.7

(2.6–4.8)

4.5

(4.2–4.8)

P74 #

 

2.4

(2–2.8)

3.1

(2.6–3.6)

        

P75

           

8.7

(8.1–9.2)

P76 *

 

8.6

(6.8–10.5)

          
  1. Results are shown as means (95% confidence interval) in millivolt [mV]; Peak 49–76 represents “unknown” compounds; * = expired compounds, # = unaffected compounds, § = resorbed compounds