Document Detail


Perfluorochemicals in meat, eggs and indoor dust in China: assessment of sources and pathways of human exposure to perfluorochemicals.
MedLine Citation:
PMID:  20377175     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In this study, 10 perfluorochemicals (PFCs) were measured in meat, meat products, and eggs, and in indoor dust, collected in China. Perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) were the most frequently detected PFCs in these samples. Mean concentrations of PFOS and PFOA in foodstuffs were in the range of 0.05-1.99 ng/g fresh wt and 0.06-12.5 ng/g fresh wt, respectively. The mean concentrations of PFOA, perfluoroheptanoic acid (PFHpA), and PFOS in indoor dust were 205, 14.0, and 4.86 ng/g, dry wt, respectively. The estimated daily intake of PFOS and PFOA from meat, meat products and eggs (EDI(meat&eggs)) ranged from 6.00 to 9.64 ng/d and from 254 to 576 ng/d, respectively, when the values below the limit of quantitation (LOQ) were assigned as 0, and from 8.80 to 15.0 ng/d and from 255 to 577 ng/d, respectively, when the values below the LOQ were set at 1/2LOQ. The EDI(meat&eggs) of PFOS and PFOA increased with increasing family income. The estimated daily intake of PFOS and PFOA through inhalation of dust (EDI(dust)) ranged from 0.23 to 0.31 ng/d and from 9.68 to 13.4 ng/d, respectively. The daily intakes of PFOS and PFOA from the consumption of meat, meat products, and eggs, and from dust ingestion, as calculated from our samples in this study, were compared with estimated daily intake of PFCs reported from the concentrations in drinking water, fish and seafood from China. Our calculations indicate that dietary sources (EDI(dietary)) account for the overwhelming proportion of (>99% for PFOS and 98% for PFOA) total daily intake (TDI) in adults. The analyzed foodstuffs (meat, meat products, and eggs) were not the major contributors to dietary exposure to PFOS, whereas, meat was the primary contributor to dietary exposure to PFOA.
Authors:
Tao Zhang; Hong Wen Sun; Qian Wu; Xian Zhong Zhang; Se Hun Yun; Kurunthachalam Kannan
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Environmental science & technology     Volume:  44     ISSN:  0013-936X     ISO Abbreviation:  Environ. Sci. Technol.     Publication Date:  2010 May 
Date Detail:
Created Date:  2010-04-29     Completed Date:  2010-06-24     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0213155     Medline TA:  Environ Sci Technol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  3572-9     Citation Subset:  IM    
Affiliation:
MOE Key Laboratory of Pollution Processes and Environmental Criteria, Nankai University, Tianjin 300071, China.
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Air Pollution, Indoor / analysis*
Alkanesulfonic Acids / analysis*
Child
Child, Preschool
China
Diet
Dust
Eggs / analysis
Fluorocarbons / analysis*
Humans
Infant
Meat Products / analysis
Octanoic Acids / analysis*
Quality Control
Chemical
Reg. No./Substance:
0/Alkanesulfonic Acids; 0/Dust; 0/Fluorocarbons; 0/Octanoic Acids; 1763-23-1/perfluorooctane sulfonic acid; 335-67-1/perfluorooctanoic acid

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