Metals (Mi)/TP

Industrial Sites

Permissible limit Set by WHO/EU (mg∙m−3)

Jhako Tech. Ltd., Kaduna

Terytex, Nig. Ltd., Kano

Grand cereals Ltd., Jos

Nickel

Cobalt

Copper

Lead

Cadmium

Chromium

Manganese

Zinc

0.046/0.92

0.000/0.00

0.821/0.82

0.014/0.28

0.003/0.60

0.024/0.05

0.120/0.80

0.532/0.11

0.058/1.16*

0.000/0.00

0.086/0.09

0.060/1.20*

0.009/1.80*

0.045/0.09

0.144/0.96

4.967/0.99

0.064/1.28*

0.000/ 0.00

0.091/0.09

0.090/1.80*

0.021/4.20*

0.044/0.09

0.148/0.99

3.864/0.77

0.050

0.001

1.000

0.050

0.005

0.500

0.150

5.000