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Distribution of PFOA and PFOS in Maternal Blood, Cord Blood and Breast Milk in Busan

부산 지역 임산부의 모체혈, 제대혈, 모유에서 PFOA, PFOS의 농도

  • Suh, Chun-Hui (Department of Occupational and Environmental Medicine & Institute of Environmental and Occupational Medicine, Busan Paik Hospital, Inje University) ;
  • Lee, Chae-Kwan (Department of Occupational and Environmental Medicine & Institute of Environmental and Occupational Medicine, Busan Paik Hospital, Inje University) ;
  • Kim, Kun-Hyung (Department of Occupational and Environmental Medicine & Institute of Environmental and Occupational Medicine, Busan Paik Hospital, Inje University) ;
  • Son, Byung-Chul (Department of Occupational and Environmental Medicine & Institute of Environmental and Occupational Medicine, Busan Paik Hospital, Inje University) ;
  • Lee, Jong-Tae (Department of Occupational and Environmental Medicine & Institute of Environmental and Occupational Medicine, Busan Paik Hospital, Inje University)
  • 서춘희 (인제대학교 의과대학 직업환경의학교실 & 환경.산업의학연구소) ;
  • 이채관 (인제대학교 의과대학 직업환경의학교실 & 환경.산업의학연구소) ;
  • 김건형 (인제대학교 의과대학 직업환경의학교실 & 환경.산업의학연구소) ;
  • 손병철 (인제대학교 의과대학 직업환경의학교실 & 환경.산업의학연구소) ;
  • 이종태 (인제대학교 의과대학 직업환경의학교실 & 환경.산업의학연구소)
  • Received : 2011.12.02
  • Accepted : 2012.01.19
  • Published : 2012.02.29

Abstract

Objectives: Perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) are man-made, persistent global pollutants widely diffused throughout the environment. They have been even found in the cord blood and breast milk of humans. Furthermore evidence of developmental toxicity in animals exists. To assess the distribution of maternal and fetal exposure to PFOS and PFOA, we analyzed paired maternal blood, cord blood and breast milk samples. Methods: Maternal blood, cord blood and breast milk were collected from 150 volunteers from the general population (aged 20-40, mean $30.5{\pm}2.9$) of the city of Busan in 2009-2010. The samples were extracted using the weak anion exchange and solid-phase extraction methods and quantified by high-performance liquid chromatograph (HPLC, Agilent 1200 Series) coupled with an Triple Quad LC-MS/MS system (Agilent 6410). Results: Median PFOA and PFOS concentrations in maternal blood were 2.18 and 3.32 ng/ml, in cord blood were 0.83 and 0.58 ng/ml, and in breast milk were 0.13 and 0.11 ng/ml, respectively. PFOS and PFOA concentrations were significantly correlated among matrices (Spearson's ${\rho}=0.226$, p = 0.05 for maternal blood; ${\rho}=0.736$, p < 0.01 for cord blood; ${\rho}=0.493$ p < 0.01 for breast milk). The ratio of cord blood/maternal blood was 0.39 for PFOA and 0.19 for PFOS. The ratio of breast milk/maternal blood was 0.07 for PFOA and 0.06 for PFOS. Conclusions: Our findings suggest that PFOA and PFOS exposure through the placenta was more prominent than through breast milk among Korean neonates born in Busan. The transfer efficiency of maternal blood to breast milk was similar between PFOA and PFOS, but that of maternal blood to cord blood was higher in PFOA than PFOS.

Keywords

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