Table 8 Comparison of selected metal concentrations (µg/g, dry weight basis) in leaves of cannabis samples with reported values
From: Levels of selected metals in leaves of Cannabis sativa L. cultivated in Ethiopia
Concentration of metal (mg/kg) | Country | References | ||||||
|---|---|---|---|---|---|---|---|---|
Ca | Ni | Cr | Cu | Zn | Cd | Pb | ||
2,100 | NR | NR | NR | 54.0 | 3.7 | NR | Not mentioned | Mihoc et al. (2012) |
NR | 10.4 | 17.4 | NR | NR | 4.4 | 1.6 | Nigeria | Eboh and Thomas ( 2005) |
NR | 3.3–3.6 | 3.9–4.0 | NR | NR | 0.03–0.07 | 6.1–6.7 | Pakistan | Khan et al. (2013) |
NR | 1.2 | 0.1 | 0.7 | 0.2 | 0.02 | 0.36 | Pakistan | Zehra et al. (2009) |
NR | NR | NR | 1,330 | 112.5 | NR | 15 | Pakistan | Ghani et al. (2012) |
1,425.9 | 94 | 205.2 | 388 | 1,700.5 | BDL | BDL | India | Tiwari et al. (2014) |
657–1,511 | 124–172 | 3.6–7.6 | 122–176 | 315–380 | 3.2–4.7 | 7.9–10.2 | Ethiopia | This study |