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Appendix F Daily Permissible Intake, Reconsidered In 197l, an a OCR for page 49
Because of new evidence available in both human and animal studies, this Committee believes that the DPI should be recalculated. Specifically, consideration should be given to: 1. Lowering the currently acceptable blood lead level of 40 yg Pb/dl for children. 2. Accounting for a higher intestinal absorption rate in young children. 3. Allowing a "safety factor" for children less than one year of age, since no data regarding effects or absorption rates is known for this group. 4. Expressing the DPI on either a body weight (yg Pb/kg/day) or caloric (yg Pb/Kcal) basis. The World Health Organization, FAO, has recently recommended that lead intake in adults should not exceed 3.0 mg of lead per week (429 yg of lead per day).103 For a standard 70 kg man, this would be equivalent to 6.12 yg of lead per kg/day. 50