Recommended by

Maximum Permissible level (mg/kg)

Concentration (mg/kg) Wwb*

Heavy metals

After washing and soaking

Zero time

FAO (1992)

30.0

N.D***

6.16

Copper (Cu)

FAD (2001)

(EOSQC, 1993)

2.0

0.1

N.D

N.D

Lead (Pb)

FAO (1992)

EOSQC (1993)**

3.0

1.0

N.D

N.D

Cadmium (Cd)