Table 4.
Comparison of metal concentration (μg/g dry mass) in the Ethiopian processed tobacco leaves (present study) with literature data (Zhang et al. 2005; Moulin et al. 2006; Ei-Amri et al. 1989)
| Metals | Ethiopia (mean, present study) | Ethiopia (Nyala, present study) | UK | France | Belgium | Italy | Germany | Japan | References |
|---|---|---|---|---|---|---|---|---|---|
| Cd | 1.67 | 1.55 | 1.62 | 1.59 | 1.22 | 1.96 | 1.96 | 1.04 | Zhang et al. (2005) |
| Ni | 2.27 | 4.70 | 5.62 | 8.91 | 9.44 | 8.60 | 9.11 | 3.24 | Zhang et al. (2005) |
| Pb | ND | ND | 14.3 | 15.6 | 14.7 | 22.0 | 17.2 | NR | Zhang et al. (2005) |
| Cr | 1.70 | 1.62 | 0.11 | 0.05 | 0.06 | 0.07 | 0.07 | NR | Zhang et al. (2005) |
| Zn | 92.7 | 79.3 | NR | NR | NR | NR | NR | 75.8 | Zhang et al. (2005) |
| Metal | Ethiopia (present study) | Cameroun | France | Germany | Switzerland | UK | USA | Reference | |
|---|---|---|---|---|---|---|---|---|---|
| Cd | 1.45–1.90 | 1.30 | 2.30 | 1.80 | 1.27 | 1.34 | 1.60 | Moulin et al. (2006) |
| Metals | Ethiopia (present study) | Libya | India | USA | Iran | Yugoslavia | References | ||
|---|---|---|---|---|---|---|---|---|---|
| Cr | 1.62–1.75 | 4.55–4.85 | 3.0–8.2 | 0.24–6.3 | 4.3–6.2 | NR | Ei-Amri et al. (1989) | ||
| Cu | 8.95–12.8 | 32.8–41.1 | NR | NR | NR | 18.9 | Ei-Amri et al. (1989) | ||
| Zn | 79.3–101 | 63.5–95.8 | 15–31 | 4.1–54 | 51–56 | 51 | Ei-Amri et al. (1989) |
ND not detected, NR not reported