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International Archives of Occupational and Environmental Health

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12.10.2017 | Original Article

Occupational exposure to perfluoroalkyl substances and serum levels of perfluorooctanesulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) in an aging population from upstate New York: a retrospective cohort study

verfasst von: Eva M. Tanner, Michael S. Bloom, Qian Wu, Kurunthachalam Kannan, Recai M. Yucel, Srishti Shrestha, Edward F. Fitzgerald

Erschienen in: International Archives of Occupational and Environmental Health | Ausgabe 2/2018

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Abstract

Purpose

Perfluoroalkyl substances (PFASs) are environmentally persistent amphiphilic compounds. Exposure to two PFASs, perfluorooctanesulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) is linked to specific occupations and industries. This study examines the contribution of past occupational PFAS exposure to serum PFOS and PFOA levels among 154 older adults in New York State.

Methods

Serum PFOS and PFOA levels were compared to data from the National Health and Nutrition Examination Survey (NHANES). Potential occupational exposure to any PFAS was determined from work histories, reviewed by an industrial hygienist, and assessed in relation to current serum PFOS and PFOA levels using exposure probability, duration and cumulative exposure.

Results

We observed 25% higher serum PFOS and 80% higher PFOA levels in study participants compared to NHANES. No participants reported PFAS chemical manufacturing work, but n = 68 reported work in occupations and industries known to use PFASs. We found that participants with high cumulative workplace exposure had 34% higher serum PFOS levels compared to participants without occupational exposure, adjusted for age, sex and income. Serum PFOS levels were 26% higher for participants with longer occupational exposure durations. The probability of occupational PFAS exposure metric was not associated with serum PFOS. Serum PFOA was not associated with any measure of occupational exposure.

Conclusion

Occupational exposure may contribute to total PFOS body burden in this study population, even among workers not directly involved in manufacturing PFASs. PFAS exposure assessments should evaluate the workplace as a potential source, even when workplace exposures are assumed to be low or moderate.

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Titel: Occupational exposure to perfluoroalkyl substances and serum levels of perfluorooctanesulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) in an aging population from upstate New York: a retrospective cohort study
verfasst von: Eva M. Tanner
Michael S. Bloom
Qian Wu
Kurunthachalam Kannan
Recai M. Yucel
Srishti Shrestha
Edward F. Fitzgerald
Publikationsdatum: 12.10.2017
Verlag: Springer Berlin Heidelberg
Erschienen in: International Archives of Occupational and Environmental Health / Ausgabe 2/2018
Print ISSN: 0340-0131
Elektronische ISSN: 1432-1246
DOI: https://doi.org/10.1007/s00420-017-1267-2

Springer Medizin

Abstract

Purpose

Methods

Results

Conclusion

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