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Perfluorinated chemicals in blood of residents in Catalonia (Spain) in relation to age and gender: a pilot study
Örebro University, Department of Natural Sciences. (MTM)ORCID iD: 0000-0002-6330-789X
Örebro University, Department of Natural Sciences. (MTM)ORCID iD: 0000-0001-6217-8857
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2007 (English)In: Environment International, ISSN 0160-4120, E-ISSN 1873-6750, Vol. 33, no 5, p. 616-623Article in journal (Refereed) Published
Abstract [en]

Fluorinated organic compounds (FOCs) are a group of chemicals widely used as surfactants, lubricants, polymers, and fire-fighting foams. Recent studies have shown the ubiquitous distribution of FOCs in the environment, wildlife, and humans. We here report the results of a pilot study conducted to provide preliminary data on the levels of 13 FOCs in the blood of 48 residents in Catalonia, Spain, in relation to gender and age (25+/-5 and 55+/-5 years). The highest mean concentration was obtained for perfluorooctane sulfonate (PFOS, 7.64 ng/ml), followed by perfluorohexane sulfonate (PFHxS, 3.56 ng/ml) and perfluorooctanoic acid (PFOA, 1.80 ng/ml). Four other FOCs showed mean levels between 0.30 and 0.44 ng/ml, whereas those of the remaining 6 compounds were below the detection limit. Regarding gender, the blood levels of PFHxS and PFOA were significantly higher (p<0.05) in men than in women, while differences according to age were only noted for PFHxS (p<0.05) and perfluorooctane sulfonamide (PFOSA) (p<0.001), for which the levels were higher in the younger (25+/-5 years) group of subjects. A significant correlation between PFOS levels and those of the remaining detected FOCs (except PFDA) was found. In general terms, the current FOC concentrations were lower than those found in recent studies concerning levels of these chemicals in human blood and serum of subjects from different countries.

Place, publisher, year, edition, pages
2007. Vol. 33, no 5, p. 616-623
National Category
Natural Sciences Chemical Sciences Environmental Sciences
Research subject
Chemistry; Environmental Chemistry
Identifiers
URN: urn:nbn:se:oru:diva-5307DOI: 10.1016/j.envint.2007.01.003PubMedID: 17289145OAI: oai:DiVA.org:oru-5307DiVA, id: diva2:158672
Available from: 2009-02-03 Created: 2009-02-03 Last updated: 2017-12-14Bibliographically approved
In thesis
1. Assessment of human exposure to per- and polyfluorinated compounds (PFCs): exposure through food, drinking water, house dust and indoor air
Open this publication in new window or tab >>Assessment of human exposure to per- and polyfluorinated compounds (PFCs): exposure through food, drinking water, house dust and indoor air
2011 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Per- and polyfluorinated compounds (PFCs) are detected in humans worldwide but all sources of human exposure have not been fully characterized. The aim of this thesis was to evaluate the contributions from food, water, air and dust as sources for human PFC exposure in the general population.

Per- and polyfluorinated compounds (PFCs) are detected in humans worldwide but all sources of Up to 27 PFCs were determined at trace levels in blood (ng/mL), water (ng/L), foods (ng/g), dust (ng/g) and air (pg/m3) in a selected Catalan population and PFC intake was estimated from the measured PFC concentrations of the different sources of exposure.

The major compounds detected in human blood of the studied population were perfluorooctane sulfonate (PFOS; 7.6 ng/mL), perfluorohexane sulfonate (PFHxS; 3.6 ng/mL) and perfluorooctanoic acid (PFOA; 1.8 ng/mL). In general, PFOS was also the major compound detected in most sources of exposure.

Food was found to be the dominant pathway for human PFC exposure accounting for more than 70 % of the total intake of both PFOS and PFOA. In the most populated area (the Barcelona Province) where the highest levels were measured, tap water can contribute to the total exposure substantially with more than 50 % for adults. Indoor sources were negligible in the selected area for most PFCs when compared to food and water intake, except for toddlers under a worst case scenario where contribution from dust and food intake were equal (19 %).

Pharmacokinetic (PK) modelling resulted in exposure of 103 ng PFOS/day and 33 ng PFOA/day of adults from the internal PFC blood concentrations. This agrees well with the intake estimated from external exposure through food, drinking water, house dust and indoor air of 80 ng PFOS/day and 32 ng PFOA/day and evidently all major exposure sources for the general population were included (in this study).

Place, publisher, year, edition, pages
Örebro: Örebro universitet, 2011. p. 85
Series
Örebro Studies in Chemistry, ISSN 1651-4270 ; 10
Keywords
human exposure, per- and polyfluorinated compunds (PFCs), dietary intake, drinking water, indoor environment
National Category
Earth and Related Environmental Sciences Environmental Sciences Chemical Sciences
Research subject
Environmental Chemistry; Chemistry
Identifiers
urn:nbn:se:oru:diva-16624 (URN)978-91-7668-811-3 (ISBN)
Public defence
2011-09-23, Örebro universitet, Hörsal M, Fakultetsgatan 1, Örebro, 10:00 (English)
Opponent
Supervisors
Available from: 2011-08-24 Created: 2011-08-24 Last updated: 2017-10-17Bibliographically approved

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Ericson Jogsten, Ingridvan Bavel, BertLindström, Gunilla

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