Journal
ENVIRONMENT INTERNATIONAL
Volume 36, Issue 7, Pages 772-778Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.envint.2010.05.016
Keywords
Perfluorinated compounds; Human serum; Dietary exposure; Dietary intake; PFC; Seafood
Categories
Funding
- Norwegian Food Control Authority
- Research Council of Norway
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Commercially used perfluorinated compounds (PFCs) have been widely detected in wildlife and humans, but the sources of human exposure are not fully characterized. The objectives of this study were to explore possible associations between concentrations of PFCs in serum and consumption of food with particular focus on seafood, and to compare estimated dietary intakes with determined serum PFC concentrations. Concentrations of 19 PFCs were determined in serum from 175 participants in the Norwegian Fish and Game Study and evaluated with respect to food consumption using multiple linear regression analysis. Associations between estimated individual total dietary intakes of PFCs and serum concentrations were also explored. PFC concentrations in serum were significantly associated (p < 0.05) with the consumption of lean fish, fish liver, shrimps and meat, as well as age. breastfeeding history and area of residence (R-2 0.35-0.63). The estimated dietary intakes of perfluorooctanoic acid (PFOA), perfluoroundecanoic acid (PFUnDA) and perfluorooctane sulfonic acid (PFOS) were 0.60, 0.34 and 1.5 ng/kg body weight/day, respectively. Seafood (fish and shellfish) was the major dietary source contributing 38% of the estimated dietary intakes of PFOA, 93% of PFUnDA and 81% of PFOS. The estimated dietary intakes of these three selected PFCs were significantly associated with the corresponding serum PFC concentrations (p<0.05). In conclusion, our results show that consumption of fish and shellfish is a major determinant of serum PFC concentrations. Further, significant relationships between estimated dietary intakes and serum concentrations have been demonstrated for the first time. (C) 2010 Elsevier Ltd. All rights reserved.
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