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. 2022 Dec 28;20(1):504. doi: 10.3390/ijerph20010504

Table 10.

Comparison of the determined average concentrations of pollutants analyzed in the outflow from the residential area and the residential–commercial area.

Parameter Unit Concentration in Outlet O1 Concentration in Outlet O2 O1/O2
Concentration
Ratio
TSS mg/L 45 164 3.6
COD mg/L 37.7 108.5 2.9
TKN mg/L 1.558 1.879 1.2
N–NO3 mg/L 0.384 0.752 2.0
N–NO2 mg/L 0.158 0.210 1.3
TN mg/L 2.941 3.353 1.1
TP mg/L 0.535 0.661 1.2
HOI mg/L 0.36 0.90 2.5
Zn mg/L 0.400 0.547 1.4
Cu mg/L 0.0300 0.0685 2.3
Hg mg/L 0.0003 0.0004 1.5
PAHs µg/L 0.1689 0.6438 3.8