Home > Research > Publications & Outputs > PBDEs in indoor dust in Ottawa, Canada : implic...

Links

Text available via DOI:

View graph of relations

PBDEs in indoor dust in Ottawa, Canada : implications for sources and exposure.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Published

Standard

PBDEs in indoor dust in Ottawa, Canada : implications for sources and exposure. / Wilford, Bryony H.; Shoeib, Mahiba; Harner, Tom et al.

In: Environmental Science and Technology, Vol. 39, No. 18, 15.09.2005, p. 7027-7035.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Wilford, BH, Shoeib, M, Harner, T, Zhu, J & Jones, KC 2005, 'PBDEs in indoor dust in Ottawa, Canada : implications for sources and exposure.', Environmental Science and Technology, vol. 39, no. 18, pp. 7027-7035. https://doi.org/10.1021/es050759g

APA

Wilford, B. H., Shoeib, M., Harner, T., Zhu, J., & Jones, K. C. (2005). PBDEs in indoor dust in Ottawa, Canada : implications for sources and exposure. Environmental Science and Technology, 39(18), 7027-7035. https://doi.org/10.1021/es050759g

Vancouver

Wilford BH, Shoeib M, Harner T, Zhu J, Jones KC. PBDEs in indoor dust in Ottawa, Canada : implications for sources and exposure. Environmental Science and Technology. 2005 Sep 15;39(18):7027-7035. doi: 10.1021/es050759g

Author

Wilford, Bryony H. ; Shoeib, Mahiba ; Harner, Tom et al. / PBDEs in indoor dust in Ottawa, Canada : implications for sources and exposure. In: Environmental Science and Technology. 2005 ; Vol. 39, No. 18. pp. 7027-7035.

Bibtex

@article{1d2a8a25263f4498a9da8cfef168ad9d,
title = "PBDEs in indoor dust in Ottawa, Canada : implications for sources and exposure.",
abstract = "Polybrominated diphenyl ethers (PBDEs) are widely used as additive flame retardants in plastics, soft furnishings, electrical and electronic equipment, and insulation in the indoor environment, and may be released indoors via volatilization or as dusts. The penta-and octa-brominated mixes are now banned in most parts of Europe, and phasing out of their use has recently begun in North America. This study follows a previous investigation into indoor air levels of PBDEs. House dust was analyzed from the family vacuum cleaners of 68 of the same 74 randomly selected homes, in Ottawa, Canada during the winter of 2002−2003. PBDEs, comprising on average 42% BDE-209, were found in all samples. The levels were log-normally distributed with a geometric mean ΣPBDE of 2000 ng g-1, and a median of 1800 ng g-1 dust. The levels in dust did not correlate with questionnaire information on house characteristics. Correlations were found between penta-mix congener levels in dust and in air from the same homes, but not for congeners of the more highly brominated mixes. Exposure scenarios are presented for mean and high dust ingestion rates, and compared against exposures from other pathways, for both adults and toddlers (6 months−2 years). Assuming a mean dust ingestion rate and median dust and air concentrations, adults would be exposed to ca. 7.5 ng ΣPBDE d-1 via the dust ingestion pathway, which represents 14% of total daily exposure when compared to diet (82%) and inhalation (4%). However, for toddlers the equivalent intakes would be 99 ng d-1, representing 80% of their daily PBDE exposure. At high dust ingestion rates these values increase to 180 ng d-1 (80% daily intake) for adults and 360 ng d-1 (89% daily intake) for toddlers. The data give a clearer picture of sources of PBDE exposure in the home environment and suggest that dust could be a significant exposure pathway for some individuals, particularly children.",
author = "Wilford, {Bryony H.} and Mahiba Shoeib and Tom Harner and Jiping Zhu and Jones, {Kevin C.}",
year = "2005",
month = sep,
day = "15",
doi = "10.1021/es050759g",
language = "English",
volume = "39",
pages = "7027--7035",
journal = "Environmental Science and Technology",
issn = "0013-936X",
publisher = "American Chemical Society",
number = "18",

}

RIS

TY - JOUR

T1 - PBDEs in indoor dust in Ottawa, Canada : implications for sources and exposure.

AU - Wilford, Bryony H.

AU - Shoeib, Mahiba

AU - Harner, Tom

AU - Zhu, Jiping

AU - Jones, Kevin C.

PY - 2005/9/15

Y1 - 2005/9/15

N2 - Polybrominated diphenyl ethers (PBDEs) are widely used as additive flame retardants in plastics, soft furnishings, electrical and electronic equipment, and insulation in the indoor environment, and may be released indoors via volatilization or as dusts. The penta-and octa-brominated mixes are now banned in most parts of Europe, and phasing out of their use has recently begun in North America. This study follows a previous investigation into indoor air levels of PBDEs. House dust was analyzed from the family vacuum cleaners of 68 of the same 74 randomly selected homes, in Ottawa, Canada during the winter of 2002−2003. PBDEs, comprising on average 42% BDE-209, were found in all samples. The levels were log-normally distributed with a geometric mean ΣPBDE of 2000 ng g-1, and a median of 1800 ng g-1 dust. The levels in dust did not correlate with questionnaire information on house characteristics. Correlations were found between penta-mix congener levels in dust and in air from the same homes, but not for congeners of the more highly brominated mixes. Exposure scenarios are presented for mean and high dust ingestion rates, and compared against exposures from other pathways, for both adults and toddlers (6 months−2 years). Assuming a mean dust ingestion rate and median dust and air concentrations, adults would be exposed to ca. 7.5 ng ΣPBDE d-1 via the dust ingestion pathway, which represents 14% of total daily exposure when compared to diet (82%) and inhalation (4%). However, for toddlers the equivalent intakes would be 99 ng d-1, representing 80% of their daily PBDE exposure. At high dust ingestion rates these values increase to 180 ng d-1 (80% daily intake) for adults and 360 ng d-1 (89% daily intake) for toddlers. The data give a clearer picture of sources of PBDE exposure in the home environment and suggest that dust could be a significant exposure pathway for some individuals, particularly children.

AB - Polybrominated diphenyl ethers (PBDEs) are widely used as additive flame retardants in plastics, soft furnishings, electrical and electronic equipment, and insulation in the indoor environment, and may be released indoors via volatilization or as dusts. The penta-and octa-brominated mixes are now banned in most parts of Europe, and phasing out of their use has recently begun in North America. This study follows a previous investigation into indoor air levels of PBDEs. House dust was analyzed from the family vacuum cleaners of 68 of the same 74 randomly selected homes, in Ottawa, Canada during the winter of 2002−2003. PBDEs, comprising on average 42% BDE-209, were found in all samples. The levels were log-normally distributed with a geometric mean ΣPBDE of 2000 ng g-1, and a median of 1800 ng g-1 dust. The levels in dust did not correlate with questionnaire information on house characteristics. Correlations were found between penta-mix congener levels in dust and in air from the same homes, but not for congeners of the more highly brominated mixes. Exposure scenarios are presented for mean and high dust ingestion rates, and compared against exposures from other pathways, for both adults and toddlers (6 months−2 years). Assuming a mean dust ingestion rate and median dust and air concentrations, adults would be exposed to ca. 7.5 ng ΣPBDE d-1 via the dust ingestion pathway, which represents 14% of total daily exposure when compared to diet (82%) and inhalation (4%). However, for toddlers the equivalent intakes would be 99 ng d-1, representing 80% of their daily PBDE exposure. At high dust ingestion rates these values increase to 180 ng d-1 (80% daily intake) for adults and 360 ng d-1 (89% daily intake) for toddlers. The data give a clearer picture of sources of PBDE exposure in the home environment and suggest that dust could be a significant exposure pathway for some individuals, particularly children.

U2 - 10.1021/es050759g

DO - 10.1021/es050759g

M3 - Journal article

VL - 39

SP - 7027

EP - 7035

JO - Environmental Science and Technology

JF - Environmental Science and Technology

SN - 0013-936X

IS - 18

ER -