. 2016 Feb 15;6:21024. doi: 10.1038/srep21024

Table 1. Concentrations and daily loads of cocaine in sewage determined with sensors and liquid chromatography coupled with tandem triple quadrupole mass spectrometry (LC-MS/MS) during the sampling period from March 10^th to 16^th, 2015.

Date	Flow (m³/day)	C (ng/L) with sensors	Load (g/day) with sensors	C (ng/L) with MS	Load (g/day) with LC-MS/MS
Monday 16^th	197493.3	455.3 ± 49.6	96.3 ± 15.8	533.5 ± 23.9	112.9 ± 7.1
Tuesday 10^th	204490.8	533.5 ± 72.4	116.9 ± 18.5	560.0 ± 30.6	122.7 ± 9.5
Wednesday 11^th	198950.4	485.2 ± 50.7	103.4 ± 15.9	546.5 ± 27.4	116.5 ± 8.3
Thursday 12^th	197523	413.6 ± 49.4	87.5 ± 15.3	562.0 ± 18.6	118.9 ± 5.6
Friday 13^th	252682.2	550.6 ± 98.9	149.1 ± 28.5	688.5 ± 14.0	186.4 ± 5.4
Saturday 14^th	220687.2	1023.4 ± 99.2	242.1 ± 29.1	1051.0 ± 36.0	248.5 ± 12.0
Sunday 15^th	193194	624.3 ± 82.6	129.2 ± 24.4	771.0 ± 44.5	159.6 ± 13.0

Table 1. Concentrations and daily loads of cocaine in sewage determined with sensors and liquid chromatography coupled with tandem triple quadrupole mass spectrometry (LC-MS/MS) during the sampling period from March 10th to 16th, 2015.