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Table 3 Indoor and outdoor VOCs concentrations in exposed and controlled area (Unit: μg/m3)

From: Health risk assessment of volatile organic compounds exposure near Daegu dyeing industrial complex in South Korea

 

Summer

Autumn

Exposed area (N = 310)

Controlled area (N = 150)

Exposed area/Controlled area

p value

Exposed area (N = 310)

Controlled area (N = 150)

Exposed area/Controlled area

p value

Mean ± SD

Mean ± SD

Mean ± SD

Mean ± SD

Toluene

Outa

73.62 ± 62.07

11.38 ± 13.67

6.47

< 0.01

161.37 ± 211.73

74.67 ± 51.81

2.16

< 0.01

Inb

125.22 ± 396.86

16.81 ± 26.75

7.45

0.03

167.04 ± 221.10

72.51 ± 56.62

2.30

< 0.01

DMF

Out

23.17 ± 28.60

4.79 ± 3.05

4.84

< 0.01

21.26 ± 20.30

3.40 ± 1.20

6.25

< 0.01

In

21.30 ± 33.12

4.90 ± 3.12

4.35

< 0.01

17.62 ± 15.41

3.59 ± 1.03

4.91

< 0.01

Chloroform

Out

10.75 ± 4.13

5.77 ± 4.63

1.86

< 0.01

11.72 ± 5.75

6.71 ± 1.66

1.75

< 0.01

In

10.38 ± 3.44

6.47 ± 4.85

1.60

< 0.01

11.92 ± 5.78

6.70 ± 2.21

1.78

< 0.01

MEK

Out

2.67 ± 6.67

N.D.c

N.D.

N.D.

13.84 ± 10.54

15.42 ± 56.46

0.90

0.33

In

3.03 ± 7.15

N.D.

N.D.

N.D.

15.15 ± 13.89

30.65 ± 138.31

0.49

0.33

Benzene

Out

8.84 ± 2.15

5.47 ± 3.45

1.62

< 0.01

3.54 ± 2.54

1.85 ± 0.41

1.91

< 0.01

In

9.00 ± 2.02

5.51 ± 3.43

1.63

< 0.01

3.71 ± 2.93

1.94 ± 0.52

1.91

< 0.01

Ethylbenzene

Out

20.38 ± 22.66

5.89 ± 5.81

3.46

< 0.01

2.34 ± 1.42

1.27 ± 0.78

1.84

< 0.01

In

20.23 ± 16.63

6.22 ± 6.78

3.25

< 0.01

2.62 ± 14.79

1.57 ± 2.31

1.67

0.02

m,p-Xylene

Out

10.70 ± 10.10

3.51 ± 2.57

3.05

< 0.01

10.48 ± 3.55

15.37 ± 7.95

0.68

< 0.01

In

12.11 ± 10.94

3.81 ± 2.61

3.18

< 0.01

11.13 ± 4.14

18.69 ± 17.25

0.60

0.16

o-Xylene

Out

17.42 ± 7.92

9.23 ± 5.87

1.89

0.16

1.73 ± 0.48

N.D.

N.D

N.D

In

18.09 ± 8.03

9.94 ± 7.16

1.82

0.01

1.82 ± 0.51

N.D.

N.D

N.D

  1. Residential outdoor and indoor average concentrations of toluene, DMF, chloroform, benzene, ethylbenzene and m,p-xylene in exposed area were significantly higher than in the controlled area in summer. The outdoor and indoor average concentrations of most selected VOCs in exposed area were also significantly higher than in the controlled area in autumn, only except for MEK and m, p-xylene
  2. aOutdoor; bIndoor; cNo detection
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BMC Public Health

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