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. 2023 Jan 24;9(3):e13174. doi: 10.1016/j.heliyon.2023.e13174

Table 2b.

Permitted Maximum Tolerable Daily Intake (PMTDI) values for some heavy metals in food additives [26,33].

Heavy metal WHO/FAO PMTDI (ug/kg BW/day)
Arsenic 3.0
Lead 3.0
Cadmium 0.6
Mercury 0.3