Table 1. Selected Heavy-Metal and Antibiotic Levels in Sediments and the Water Column, Respectively, along the Almendares Rivera.
| station | 9 | 8 | 7 | 6 | 5A | 5 | 4 | 3A |
|---|---|---|---|---|---|---|---|---|
| Cd | 0.24b | 0.44 | 0.64 | 0.73 | 0.68 | 0.49 | 1.59 | 0.28 |
| (0.01) | (0.03) | (0.04) | (0.04) | (0.03) | (0.03) | (0.09) | (0.01) | |
| Co | 8.80 | 12.9 | 14.7 | 14.8 | 9.54 | 15.6 | 13.6 | 3.33 |
| (0.54) | (1.02) | (1.16) | (0.78) | (0.59) | (0.82) | (0.60) | (0.20) | |
| Cr | 95.7 | 86.0 | 140 | 148 | 121 | 120 | 197 | 58.4 |
| (5.88) | (3.02) | (7.33) | (10.4) | (5.29) | (5.26) | (10.4) | (4.60) | |
| Cu | 11.6 | 58.1 | 90.2 | 21.5 | 42.6 | 138 | 869 | 256 |
| (0.41) | (3.57) | (5.54) | (0.95) | (1.49) | (8.44) | (30.5) | (20.2) | |
| Pb | 17.4 | 45.0 | 59.7 | 64.9 | 57.5 | 31.3 | 108 | 50.4 |
| (1.07) | (3.55) | (4.19) | (2.27) | (3.52) | (2.19) | (4.04) | (2.21) | |
| Zn | 46.1 | 152 | 187 | 245 | 275 | 99.4 | 800 | 334 |
| (1.61) | (5.22) | (9.81) | (15.1) | (7.63) | (7.84) | (28.3) | (11.7) | |
| ampicillin | 280c | 441 | 197 | 231 | 925 | 7570 | 11400 | 7940 |
| (167) | (69.2) | (116) | (164) | (349) | (4820) | (1990) | (1940) | |
| benzyl-penicillin | 65.9 | 63.6 | 59.8 | 60.3 | 95.7 | 49.6 | 95.4 | 32.9 |
| (12.4) | (10.5) | (7.49) | (16.4) | (21.4) | (19.3) | (41.8) | (10.9) | |
| tetracycline | 11.1 | 3.37 | 17.2 | 1.00 | 155.7 | 36.2 | 14.3 | 41.5 |
| (19.8) | (4.64) | (23.9) | (0.01) | (91.8) | (46.0) | (16.5) | (26.4) |
a
Upstream to downstream: 9→3A.
b
Mean sediment concentrations based on five independent samples in μg/g-soil; 95% confidence intervals in brackets.
c
Mean water-column concentrations based on five independent samples in ng/L; 95% confidence intervals in brackets.