From: Heavy metals in vegetables: screening health risks involved in cultivation along wastewater drain and irrigating with wastewater
S. no.
Metal
Reference oral dose (mg/kg/day)
Reference
1.
Cadmium
0.001
US EPA (2015)
2.
Copper
0.04
3.
Cobalt
0.043
Food and Nutrition Board (2004)
4.
Lead
0.004
US EPA (1997)
5.
Iron
0.7