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Formaldehyde levels in Sweden: personal exposure, indoor, and outdoor concentrations

Journal of Exposure Science & Environmental Epidemiology volume 15, pages 252–260 (2005)Cite this article

Abstract

Formaldehyde is a ubiquitous environmental pollutant and is probably carcinogenic to humans. Exposure to formaldehyde was investigated in the general population with personal as well as stationary measurements. The results from two campaigns in two Swedish cities are presented, including measurements of personal exposure among a total of 65 randomly selected subjects together with simultaneous measurements of individual indoor and outdoor concentrations. Diffusive GMD samplers were placed in the breathing zone, in the participants' bedrooms, and outside their homes for 24 h in campaign A and six days in campaign B. Repeated measurements were also conducted in order to study the variability between and within individuals. Median personal exposure to formaldehyde was 22 μg/m3 (campaign A) and 23 μg/m3 (campaign B), which is within the guideline value range of 12–60 μg/m3 proposed in Sweden. Bedroom concentrations were generally slightly higher than personal exposure, while outdoor concentrations (measured only in campaign B) were low. In campaign B, the stationary measurements were used to model personal exposure. Bedroom concentrations were found to explain 90% of the variation of the measured personal exposure and predicted personal exposure nearly as well as an extended model that also included the outdoor contribution. Subjects living in single-family houses had significantly higher exposure to formaldehyde compared with subjects living in apartments. The 24-h and 6-day sampling periods yield a relatively low within-individual variability for formaldehyde measurements with GMD samplers.

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Acknowledgements

This study was funded by a grant from the Swedish Environmental Protection Agency. Associate Professor Elaine Symanski is gratefully acknowledged for her valuable comments on a former version of this manuscript, Carina Loh and Anders Johansson for their technical assistance, and Margaret Rhén for skilful laboratory assistance.

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Authors and Affiliations

  1. Occupational and Environmental Medicine, Sahlgrenska University Hospital and Academy at Göteborg University, SE-41266, Göteborg, Sweden

    Pernilla Gustafson, Lars Barregård & Gerd Sällsten

  2. National Institute for Working Life, SE-90713, Umeå, Sweden

    Roger Lindahl

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  1. Pernilla Gustafson
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  2. Lars Barregård
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  3. Roger Lindahl
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  4. Gerd Sällsten
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Correspondence to Pernilla Gustafson.

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Gustafson, P., Barregård, L., Lindahl, R. et al. Formaldehyde levels in Sweden: personal exposure, indoor, and outdoor concentrations. J Expo Sci Environ Epidemiol 15, 252–260 (2005). https://doi.org/10.1038/sj.jea.7500399

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