| Concentration (ng∙L−1) |
| |||
Compound | *Pedras River (lower side) | *Pedras River (upper side) | *Parado River (upper side) | *Parado River (lower side) | Contaminated samples (%) |
Chlortetracycline | | | | | 0 |
Demeclocycline | | | | | 0 |
Doxycycline | | | | | 0 |
Metacycline | | | | | 0 |
Oxytetracycline | | | | | 67 |
Tetracycline | | | | | 0 |
Dapsone | | | | | 0 |
Sulfacetamide | | | | | 0 |
Sulfadimethoxin | | | | | 0 |
Sulfamerazine | | | | | 0 |
Sulfamethazine | | | | | 0 |
Sulfamethoxazole | > MDL - 467.0 | | | | 67 |
Sulphaquinoxaline | | | | | 0 |
Sulfathiazole | | | | | 0 |