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Table 3 Concentration and frequency of detection of the target illicit drugs and their metabolites in the influent and effluent (ng/L)

From: Occurrence and removal of illicit drugs in different wastewater treatment plants with different treatment techniques

CompoundTNQ-1TNQ-2XBQ-1XBQ-2XBQ-3WJQ-1JTQ-1LYS-1Freq. (%)
METH
 Influent5.131.9551.621.2135.611.206.5845.08100.00
 Effluent0.380.4716.59< LOD8.240.7419.7122.4487.50
AMP
 Influent8.111.43< LOD2.222.821.1910.294.2787.50
 Effluent< LOD1.031.06< LOD< LOD1.061.221.2962.50
KET
 Influent1.720.780.780.902.501.050.870.96100.00
 Effluent< LOD0.190.860.351.210.700.941.0187.50
NK
 Influent0.38< LOD0.730.34< LOD0.230.16< LOD62.50
 Effluent0.580.270.360.31< LOD0.180.330.1887.50
COD
 Influent10.71< LOD< LOD0.800.810.400.420.9475.00
 Effluent0.000.420.340.61< LOD0.460.300.3975.00
HR
 Influent0.000.380.300.740.370.466.99< LOD75.00
 Effluent1.530.340.420.690.340.431.810.40100.00
MET
 Influent0.441.240.140.60< LOD0.72< LOD0.0975.00
 Effluent< LOD0.09< LOD0.19< LOD0.10< LOD0.1050.00
COC
 Influent0.750.380.180.510.180.300.190.21100.00
 Effluent0.490.190.180.400.180.200.190.190.00
BE
 Influent< LOD0.19< LOD< LOD< LOD< LOD< LOD< LOD12.50
 Effluent< LOD< LOD< LOD< LOD< LOD< LOD< LOD< LOD< LOD
MDMA
 Influent0.480.000.300.550.000.210.260.1875.00
 Effluent0.670.180.49< LOD0.210.22< LOD0.1975.00
MDA
 Influent1.750.242.74< LOD< LOD1.104.852.1875.00
 Effluent0.60< LOD0.24< LOD0.460.252.360.3975.00
MC
 Influent0.610.282.160.95< LOD2.696.581.6287.50
 Effluent0.500.670.181.230.310.19< LOD0.5887.50