Elements

Dhaka

ng∙m−3

Earth crust

mg∙g−1

Coal fly ash

mg∙g−1

Dhaka

EF/CRUST

Dhaka EF/FLY

As

3.06

0.018

0.400

4

0

Cd

6.28

0.00008

0.000

1908

0.0

Pb

305.6

0.013

2.200

571

6

Cu

11.98

0.055

0.300

5

2

Fe

2057

50.00

85.00

1

1

Zn

303.3

0.070

2.300

105

5