Table 5.
Mean concentrations (mg/L) of heavy metals in blood among various age groups of metal workers in Kano metropolis, 2015.
| Age groups (Yrs) |
Mn* (mg/l) |
Pb** (mg/l) |
Cd** (mg/l) |
Cr** (mg/l) |
Ni** (mg/l) |
|---|---|---|---|---|---|
| 15–25 | 0.0132 | 0.1801 | 0.00176 | 0.01265 | 0.01861 |
| 26–35 | 0.01258 | 0.17 | 0.002257 | 0.01409 | 0.01776 |
| 36–45 | 0.01182 | 0.1926 | 0.00161 | 0.0149 | 0.01514 |
| >45 ACGIH (2008) |
0.02253 0.01 |
0.2111 0.2 |
0.00185 0.005 |
0.01634 0.0005 |
0.02 0.0005 |
*
p < 0.05 = significant relationship.
**
p > 0.05 = no significant relationship.