INDEX

Range

Classification

Samples

(%)

Reference

CR

>10−6 - 10−4<

Generally satisfactory

21

100

[15]

>10−4

Intolerable

-

-

HQ

<1

Acceptable level (no concern)

18

85.7

[21]

>1

No carcinogenic adverse effects

3

24.3

HI

<1

Safe

18

85.7

[21]

>1

Unsafe

3

24.3