Toxic Metal

Mean C s i

C n i

C f i

T r i

E r i

Risk Grade

As

0.00571

13

4.39 × 10−04

10

0.057

Slight

Cd

−0.0348

0.3

−1.16 × 10−01

30

−1.043

Slight

Cr

−4.1584

90

−4.62 × 10−02

2

−8.317

Slight

Cu

0.00745

45

1.66 × 10−04

5

0.037

Slight

Hg

−6.3282

0.4

−1.58 × 10−01

40

−253.128

Slight

Ni

0.75968

68

1.12 × 10−02

6

4.558

Slight

Pb

3.76117

20

1.88 × 10−01

5

18.806

Slight

Zn

3.63332

95

3.82 × 10−02

1

3.633

Slight