Table 2.

Oral references doses and respective citation(s) for each contaminant.

Contaminant	Oral RfD (mg/kg-day)	Citation
Arsenic	3 × 10−4	[134]
Cadmium	5.0 × 10−4	[134]
Chromium	3.0 × 10−3	[134]
Manganese	4.6 × 10−2	[134,135,136]
Nitrate	1.6	[134]
Uranium	2 × 10−4	[137]
Zinc	0.3	[134]