Table 9 Reference doses (RfD; mg kg-1 day-1) and cancer slope factors (CSF; mg kg−1 day−1) 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

Metal

RfD

CSF

Reference

As

3.0 × 10–4

1.5

76,85

Pb

3.5 × 10–3

8.5 × 10–3

76,86

Cd

1.0 × 10–3

6.3

76,87

Cr

3.0 × 10–3

0.5

76,88

Ni

2.0 × 10–2

0.84

76,77

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