Skip to main content

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