Table 4 Toxicity response factors (\(T_{r}^{i}\)) for selected HMs.

From: Soil–water–crop pathways of heavy metal contamination and human health risks in intensive smallholder farms of the Nahavand Plain, Iran

Element

Hg

Cd

Pb

Ni

Cu

Cr

Zn

\(T_{r}^{i}\)

40

30

5

5

5

2

1

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