标题：Determination of the Average Daily Intake of Polychlorinated Biphenyl (PCB) in Breastfed Babies in Vali-Asr Hospital, Tehran University of Medical Sciences
摘要：Objective: Breast milk is rich in fat. Toxins, pollutants, drugs, and allergens, especially lipophilic toxins may accumulate in the breast milk; therefore, it can serve as potential source for transferring these toxins to the baby. Dioxins, including polychlorinated biphenyl (PCBs) are among these pollutants. The aim of this study was to determine the average daily intake of PCBs in breastfed babies. Materials and methods: Fifty breast milk samples were collected from breastfeeding mothers whose babies were born in Vali-Asr Hospital, Tehran, Iran in 2014. Each sample was 20 cc and collected within the first 7 days after delivery. PCBs were measured using the GCMass method. We calculated the ADI based on ng/kg/day and compared it with tolerable daily intake (TDI). TDI was considered 20 ng/kg/day according to WHO. Results: The mean PCB concentration was 250.65 ng/gl.w in the collected samples. Among the 6 isomers measured, the concentration of PCB180
