Ultrafine particles: exposure and source apportionment in 56 Danish homes

Research output: Contribution to journalJournal articleResearchpeer-review

Standard

Ultrafine particles : exposure and source apportionment in 56 Danish homes. / Bekö, Gabriel; Weschler, Charles J.; Wierzbicka, Aneta; Karottki, Dorina Gabriela; Toftum, Jørn; Loft, Steffen; Clausen, Geo.

In: Environmental Science & Technology (Washington), Vol. 47, No. 18, 17.09.2013, p. 10240-8.

Research output: Contribution to journalJournal articleResearchpeer-review

Harvard

Bekö, G, Weschler, CJ, Wierzbicka, A, Karottki, DG, Toftum, J, Loft, S & Clausen, G 2013, 'Ultrafine particles: exposure and source apportionment in 56 Danish homes', Environmental Science & Technology (Washington), vol. 47, no. 18, pp. 10240-8. https://doi.org/10.1021/es402429h

APA

Bekö, G., Weschler, C. J., Wierzbicka, A., Karottki, D. G., Toftum, J., Loft, S., & Clausen, G. (2013). Ultrafine particles: exposure and source apportionment in 56 Danish homes. Environmental Science & Technology (Washington), 47(18), 10240-8. https://doi.org/10.1021/es402429h

Vancouver

Bekö G, Weschler CJ, Wierzbicka A, Karottki DG, Toftum J, Loft S et al. Ultrafine particles: exposure and source apportionment in 56 Danish homes. Environmental Science & Technology (Washington). 2013 Sep 17;47(18):10240-8. https://doi.org/10.1021/es402429h

Author

Bekö, Gabriel ; Weschler, Charles J. ; Wierzbicka, Aneta ; Karottki, Dorina Gabriela ; Toftum, Jørn ; Loft, Steffen ; Clausen, Geo. / Ultrafine particles : exposure and source apportionment in 56 Danish homes. In: Environmental Science & Technology (Washington). 2013 ; Vol. 47, No. 18. pp. 10240-8.

Bibtex

@article{9ccc63e41f6d4df497654abdfcf6fdb8,
title = "Ultrafine particles: exposure and source apportionment in 56 Danish homes",
abstract = "Particle number (PN) concentrations (10-300 nm in size) were continuously measured over a period of ~45 h in 56 residences of nonsmokers in Copenhagen, Denmark. The highest concentrations were measured when occupants were present and awake (geometric mean, GM: 22.3 × 10(3) cm(-3)), the lowest when the homes were vacant (GM: 6.1 × 10(3) cm(-3)) or the occupants were asleep (GM: 5.1 × 10(3) cm(-3)). Diary entries regarding occupancy and particle related activities were used to identify source events and apportion the daily integrated exposure among sources. Source events clearly resulted in increased PN concentrations and decreased average particle diameter. For a given event, elevated particle concentrations persisted for several hours after the emission of fresh particles ceased. The residential daily integrated PN exposure in the 56 homes ranged between 37 × 10(3) and 6.0 × 10(6) particles per cm(3)·h/day (GM: 3.3 × 10(5) cm(-3)·h/day). On average, ~90% of this exposure occurred outside of the period from midnight to 6 a.m. Source events, especially candle burning, cooking, toasting, and unknown activities, were responsible on average for ~65% of the residential integrated exposure (51% without the unknown activities). Candle burning occurred in half of the homes where, on average, it was responsible for almost 60% of the integrated exposure.",
author = "Gabriel Bek{\"o} and Weschler, {Charles J.} and Aneta Wierzbicka and Karottki, {Dorina Gabriela} and J{\o}rn Toftum and Steffen Loft and Geo Clausen",
year = "2013",
month = sep,
day = "17",
doi = "10.1021/es402429h",
language = "English",
volume = "47",
pages = "10240--8",
journal = "Environmental Science & Technology (Washington)",
issn = "0013-936X",
publisher = "American Chemical Society",
number = "18",

}

RIS

TY - JOUR

T1 - Ultrafine particles

T2 - exposure and source apportionment in 56 Danish homes

AU - Bekö, Gabriel

AU - Weschler, Charles J.

AU - Wierzbicka, Aneta

AU - Karottki, Dorina Gabriela

AU - Toftum, Jørn

AU - Loft, Steffen

AU - Clausen, Geo

PY - 2013/9/17

Y1 - 2013/9/17

N2 - Particle number (PN) concentrations (10-300 nm in size) were continuously measured over a period of ~45 h in 56 residences of nonsmokers in Copenhagen, Denmark. The highest concentrations were measured when occupants were present and awake (geometric mean, GM: 22.3 × 10(3) cm(-3)), the lowest when the homes were vacant (GM: 6.1 × 10(3) cm(-3)) or the occupants were asleep (GM: 5.1 × 10(3) cm(-3)). Diary entries regarding occupancy and particle related activities were used to identify source events and apportion the daily integrated exposure among sources. Source events clearly resulted in increased PN concentrations and decreased average particle diameter. For a given event, elevated particle concentrations persisted for several hours after the emission of fresh particles ceased. The residential daily integrated PN exposure in the 56 homes ranged between 37 × 10(3) and 6.0 × 10(6) particles per cm(3)·h/day (GM: 3.3 × 10(5) cm(-3)·h/day). On average, ~90% of this exposure occurred outside of the period from midnight to 6 a.m. Source events, especially candle burning, cooking, toasting, and unknown activities, were responsible on average for ~65% of the residential integrated exposure (51% without the unknown activities). Candle burning occurred in half of the homes where, on average, it was responsible for almost 60% of the integrated exposure.

AB - Particle number (PN) concentrations (10-300 nm in size) were continuously measured over a period of ~45 h in 56 residences of nonsmokers in Copenhagen, Denmark. The highest concentrations were measured when occupants were present and awake (geometric mean, GM: 22.3 × 10(3) cm(-3)), the lowest when the homes were vacant (GM: 6.1 × 10(3) cm(-3)) or the occupants were asleep (GM: 5.1 × 10(3) cm(-3)). Diary entries regarding occupancy and particle related activities were used to identify source events and apportion the daily integrated exposure among sources. Source events clearly resulted in increased PN concentrations and decreased average particle diameter. For a given event, elevated particle concentrations persisted for several hours after the emission of fresh particles ceased. The residential daily integrated PN exposure in the 56 homes ranged between 37 × 10(3) and 6.0 × 10(6) particles per cm(3)·h/day (GM: 3.3 × 10(5) cm(-3)·h/day). On average, ~90% of this exposure occurred outside of the period from midnight to 6 a.m. Source events, especially candle burning, cooking, toasting, and unknown activities, were responsible on average for ~65% of the residential integrated exposure (51% without the unknown activities). Candle burning occurred in half of the homes where, on average, it was responsible for almost 60% of the integrated exposure.

U2 - 10.1021/es402429h

DO - 10.1021/es402429h

M3 - Journal article

C2 - 23957328

VL - 47

SP - 10240

EP - 10248

JO - Environmental Science & Technology (Washington)

JF - Environmental Science & Technology (Washington)

SN - 0013-936X

IS - 18

ER -

ID: 98469518