Table 2.

The reference dose and slope factor of metals (carcinogenic elements are marked in italic)

	Cd1	Cr1	Cu1	Hg2	Ni1	Pb1	Zn1
RfDing	0.001	0.003	0.04	0.0003	0.02	0.0035	0.3
RfDinh	0.001	0.0286	0.042	0.0000857	0.0206	0.00352	0.3
RfDderm	0.00001	0.00006	0.012	0.000021	0.0054	0.000525	0.06
SFing	–	–	–	–	–	–	–
SFinh	6.3	42	–	–	0.84	–	–
SFderm	–	–	–	–	–	–	–

¹Safiur Rahman et al. 2019, ²Wang et al. 2019