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. 2023 Sep 19;9(9):e20294. doi: 10.1016/j.heliyon.2023.e20294

Table 2.

Comparison of the average concentration of BTEX compounds (μg/m3) in the investigated environments.

location winter
 summer
Benzene Toluene ethylbenzene Xylene Benzene Toluene ethylbenzene Xylene
Restaurants 5.75 13.94 6.51 6.08 43.24 19.97 10.86 10.86
Photocopy centers 132.58 320.70 48.63 120.72 436.39 213.30 48.63 131.14
Laundries 10.22 453.73 6.08 13.90 4.15 242.32 3.91 6.51
Women's hair salons 114.69 1776.10 17.37 142.43 2622.83 4025.90 112.03 1665.28
p-value 0.001 0.001 0.006 0.001 0.008 0.001 0.002 0.001