Table 6 Mean health hazard indices for trace elements in adults.

Element	RfD₀	FC		F1		F2		F3		F4
Element	RfD₀	DEI_A	HHI_A	DEI_A	HHI_A	DEI_A	HHI_A	DEI_A	HHI_A	DEI_A	HHI_A
Arsenic	0.3	0.01	0.03	0.01	0.02	<0.01	0.01	<0.01	0.01	0.01	0.02
Cadmium	1	<0.01	<0.01	<0.01	<0.01	<0.01	<0.01	NA	NA	<0.01	<0.01
Chromium	1500	3.50	<0.01	2.27	<0.01	2.17	<0.01	2.05	<0.01	2.53	<0.01
Copper	40	3.07	0.08	2.32	0.06	2.18	0.05	2.74	0.07	2.24	0.06
Iron	700	41.3	0.06	39.4	0.06	34.6	0.05	40.4	0.06	43.5	0.06
Lead	3.5	0.02	0.01	0.01	<0.01	0.22	0.06	0.29	0.08	0.37	0.11
Nickel	20	2.06	0.10	1.43	0.07	1.43	0.07	1.31	0.07	1.67	0.08
Zinc	300	27.9	0.09	23.5	0.08	13.2	0.04	6.22	0.02	17.9	0.06

HHI_A health hazard index for adults, DEI_A average daily element intake from surface soil through corn for adults, RfD₀ reference dose of the element. DEI_A and RfD₀ in µg/person/day/kg bwt, NA Not applicable.

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