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Geographical Differences in Dietary Exposure to Perfluoroalkyl Acids between Manufacturing and Application Regions in China
Stockholm University, Faculty of Science, Department of Environmental Science and Analytical Chemistry. FRAM − High North Research Centre on Climate and the Environment, Norway.
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Number of Authors: 62017 (English)In: Environmental Science and Technology, ISSN 0013-936X, E-ISSN 1520-5851, Vol. 51, no 10, p. 5747-5755Article in journal (Refereed) Published
Abstract [en]

Emissions of perfluoroalkyl acids (PFAAs) have increased in China over the past decade, but human exposure pathways are poorly understood. Here we analyzed 15 PFAAs in commonly consumed food items and calculated body weight normalized dietary intake rates (estimated dietary intake, EDIs) in an area with ongoing PFAA production (Hubei province; n = 121) and an urbanized coastal area (Zhejiang province; n = 106). Geographical differences in concentrations were primarily observed for perfluorooctanesulfonic acid (PFOS) and perfluorohexanesulfonic acid (PFHxS) in animal food items and short chain PFAAs in vegetable food items. The average EDI of Sigma PFAAs for adults in Hubei (998 ng kg(-1) day(-1)) was more than 2 orders of magnitude higher than that in Zhejiang (9.03 ng kg-1 day(-1)). In Hubei province, the average EDI of PFOS for adults (87 ng kg(-1) day(-1)) was close to or exceeded advisory guidelines used in other countries indicating health risks for the population from long-term exposure. Yet, PFOS could only account for about 10% of the EDI of Sigma PFAAs in the Hubei province, which was dominated by short-chain PFAAs through consumption of vegetables. The large contribution of short-chain PFAAs to the total EDIs in manufacturing areas emphasize the need for improved exposure and hazard assessment tools of these substances.

Place, publisher, year, edition, pages
2017. Vol. 51, no 10, p. 5747-5755
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Environmental Engineering Earth and Related Environmental Sciences
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URN: urn:nbn:se:su:diva-144830DOI: 10.1021/acs.est.7b00246ISI: 000401674400044PubMedID: 28387520OAI: oai:DiVA.org:su-144830DiVA, id: diva2:1121296
Available from: 2017-07-10 Created: 2017-07-10 Last updated: 2025-01-31Bibliographically approved

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Vestergren, Robin

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