Table 5.
Frequency of detection and median concentration of cannabinoids and its metabolites in various solid samples.
| Source | Frequency of detection (%) (Median concentration ng g−1 d.w.)a |
Reference |
||||
|---|---|---|---|---|---|---|
| THC | THC-OH | THC-COOH | CBD | CBN | ||
| Sludge | 100 (138) | 67 (78.4) | – | 80 (168) | 53 (101) | Mastroianni et al. (2013) |
| Influent particulate | – | 67 (67) | 67 (17) | – | – | Senta et al. (2013) |
| Sludge | – | 67 (7.3) | 67 (8.5) | – | – | |
| River sediment | 5 (42) | – | 1 (5) | – | – | Carmona et al. (2014) |
| Sludge | – | – | -(170) | – | -(7.1) | Ivanová et al. (2018) |
| Sludge | 7(−) | 21(−) | 14(−) | 43(−) | 43(−) | Black et al. (2019) |
a
’-’ Not measured.