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Table 3

The oral toxicity reference dose value (Rfd) of metals and heavy metals in water

Metals and heavy metalsOral RfD (μg/(kg·day))
Fe 700 
Ala 7,000 
Pb 3.5 
As 0.3 
Cd 0.5 
Metals and heavy metalsOral RfD (μg/(kg·day))
Fe 700 
Ala 7,000 
Pb 3.5 
As 0.3 
Cd 0.5 

aThe RfD value proposed by FAO and WHO (WHO 1989).

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