Abstract
Daily intakes of PCBs and pesticides in infants (0-3 year-old) were determined. Diets of 36 infants in a nursery in Osaka Prefecture were collected by duplicate portion method. Of the 36 samples the number, in which each pesticide was detected, was as follows : α-HCH, 36; β-HCH, 32 ; γ-HCH, 8; δ-HCH, 1; ρ, ρ′-DDE, 33; ρ, ρ′-DDD, 2; ρ, ρ′-DDT, 3; dieldrin, 32; fenitrothion, 1; PCBs, 17, respectively. Aldrin, endrin, heptachlor epoxide, captan, captafol, chlorbenzilate, malathion, parathion, diazinon, chlorpyrifos, phenthoate, EPN and phosalone were below detection limits: intakes of <0.05 μg/day, PCBs, α-HCH, γ-HCH and heptachlor epoxide; <0.1 μg/day, δ-HCH, aldrin, dieldrin, endrin and ρ, ρ′-DDE ; <0.2 μg/day, β-HCH, ρ, ρ′-DDD and ρ, ρ′-DDT; <0.5 μg/day, captan, captafol, chlorbenzilate, malathion, parathion, diazinon, chlorpyrifos, fenitrothion, phenthoate, EPN and phosalone. The average daily intake of HCH isomers, DDT complexes, dieldrin and PCBs were 1.00 μg, 0.45 μg (without No. 14), 0.17 μg and 0.22 μg, respectively. On the whole, daily intakes of these environmental contaminants were trace amount, however, it is necessary to watch these contaminants in diets for long periods of time.
