Table 1.

Average tolerable intake of metals for a person.

Metal	HBGV	Value	Source
Aluminum	TWI	2000 μg/kg b.w.	[12]
	TDI	10,000 μg/kg b.w.	[13]
Arsenic	TWI	15 μg/kg b.w.	[14]
Cadmium	TWI	2.5 µg/kg b.w.	[15]
Chromium	TDI	300 μg/kg b.w.	[16]
Cobalt	TDI	1.4 μg/kg b.w.	[17]
Copper	UL	10,000 μg/kg b.w.	[18]
Iron	TDI	800 µg/kg b.w.	[19]
Lead	TWI	25 µg/kg b.w.	[20]
	TDI	600 µg/kg b.w.
Manganese	TDI	60 µg/kg b.w.	[21]
Mercury	TWI	4 µg/kg b.w.	[22]
Nickel	TDI	12 μg/kg b.w.	[23]
Selenium	UL	400 μg/kg b.w.	[24]
Zinc	UL	40,000 μg/day	[18]

Footnote: The intake of metals depends on the concentration of metals in food and daily food intake. In addition, tolerance to contaminants can be influenced by body weight [11]. A Tolerable Daily or Weekly Intake (TDI/TWI) is the maximum harmless daily dose of a chemical pollutant for a person that does not cause any adverse effects during the daily or weekly intake throughout life. Abbreviations: b.w. = body weight; HGBV = health-based guidance values; UL = tolerable upper intake level; TWI = tolerable weekly intake; TDI = tolerable daily intake.