Table 1.
Physicochemical parameters and antibiotic concentrations of water samples.
| Samplea | Physicochemical parameterb | Antibiotic concentration (µg/L)c | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BOD (mgO2/L) | COD (mgO2/L) | TSS (mg/L) | TN (%) | MNZ | SMX | TMP | NOR | CIP | CLI | CLR | ERY | AZM | |
| RS15 | <21.3 | 19 | 0.25 | 5.2 | ND | 0.02 | ND | 2.03 | 0.57 | ND | ND | 0.01 | ND |
| RM15 | 57 | 96 | 28 | 13 | 0.18 | 0.17 | 0.05 | 2.03 | 0.54 | 0.02 | 0.47 | 0.01 | 0.56 |
| RL15 | 247.1 | 433 | 100 | 12 | 0.33 | 1.40 | 0.29 | 2.12 | 0.68 | 0.01 | 0.93 | 0.05 | 0.99 |
| HA15-1 | 286 | 525 | 131 | 69 | 0.36 | 0.06 | 0.04 | 2.43 | 0.70 | 0.69 | ND | 0.01 | ND |
| HA15-2 | 483 | 895 | 109 | 41 | 0.36 | 14.56 | 7.10 | 63.22 | 0.86 | 0.60 | ND | 0.03 | 0.50 |
| HA15-3d | 243 | 505 | 90 | 52 | |||||||||
| HB15-1 | <21.3 | 33 | 136 | 32 | 0.97 | 3.73 | 11.20 | 10.92 | 2.06 | 7.22 | 1.59 | 0.05 | 1.47 |
| HB15-2 | 199 | 368 | 103 | 59 | 9.00 | 2.17 | 1.51 | 3.47 | 9.98 | 0.31 | 0.73 | 0.03 | 0.82 |
| HB15-3d | 322 | 577 | 81 | 52 | |||||||||
| HC15-1 | 444 | 847 | 81 | 56 | 9.08 | 9.20 | 1.63 | 6.01 | 3.06 | 4.23 | 17.53 | ND | 10.57 |
| HC15-2 | 243 | 528 | 63 | 68 | 7.61 | 3.66 | 0.94 | 3.83 | 8.59 | 4.87 | 1.71 | ND | 1.62 |
| HC15-3d | 470 | 729 | 124 | 35 | |||||||||
aSamples collected in 2015 from the Bogotá River source (RS), middle section (RM) or lower section (RL), and from hospitals (HA, HB, HC; 3 samples each).
bBOD, biological oxygen demand; COD, chemical oxygen demand; TSS, total suspended solids; TN, total nitrogen.
cMNZ, metronidazole; SMX, sulfamethoxazole; TMP, trimethoprim; NOR, norfloxacin; CIP, ciprofloxacin; CLI, clindamycin; CLR, clarithromycin; ERY, erythromycin; AZM, azithromycin; ND, not detected.
dSamples HA15-3, HB15-3, HC15-3 were not analyzed for antibiotics.