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Ozone in urban China: Impact on mortalities and approaches for establishing indoor guideline concentrations.

Publication ,  Journal Article
Xiang, J; Weschler, CJ; Zhang, J; Zhang, L; Sun, Z; Duan, X; Zhang, Y
Published in: Indoor air
July 2019

Reducing indoor ozone levels may be an effective strategy to reduce total exposure and associated mortality. Here we estimate (a) premature mortalities attributable to ozone for China's urban population ≥25 years of age; (b) the fraction of total exposure occurring indoors; and (c) mortalities that can be potentially avoided through meeting current and more stringent indoor ozone standards/guidelines based on 1-hour daily maxima. To estimate ozone-attributable premature mortalities, we used hourly outdoor ozone concentrations measured at 1497 monitoring stations located in 339 Chinese cities and a published concentration-response model. We proceeded to estimate province-specific infiltration factors and co-occurring hourly indoor ozone concentrations. For the year 2015, we estimated that indoor exposures accounted for 59% (95% confidence interval (CI): 26%-79%) of the total ozone exposure that resulted in 70800 (95% CI: 35 900-137 700) premature all-cause mortalities in urban China. If the current Chinese indoor ozone standards (80 ppbv (160 µg/m3 ); 56 ppbv (112 µg/m3 )) were met, the mean estimates of reduction in mortalities would be indistinguishable from zero. With stricter 1-hour indoor ozone guidelines, the expected mortality reductions increase exponentially per unit decrease in indoor ozone. The analysis in this paper should help facilitate formulating present and future indoor ozone guidelines.

Duke Scholars

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Published In

Indoor air

DOI

EISSN

1600-0668

ISSN

0905-6947

Publication Date

July 2019

Volume

29

Issue

4

Start / End Page

604 / 615

Related Subject Headings

  • Urban Population
  • Ozone
  • Mortality, Premature
  • Male
  • Humans
  • Female
  • Environmental Monitoring
  • China
  • Building & Construction
  • Air Pollution, Indoor
 

Citation

APA
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ICMJE
MLA
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Xiang, J., Weschler, C. J., Zhang, J., Zhang, L., Sun, Z., Duan, X., & Zhang, Y. (2019). Ozone in urban China: Impact on mortalities and approaches for establishing indoor guideline concentrations. Indoor Air, 29(4), 604–615. https://doi.org/10.1111/ina.12565
Xiang, Jianbang, Charles J. Weschler, Junfeng Zhang, Lin Zhang, Zhiwei Sun, Xiaoli Duan, and Yinping Zhang. “Ozone in urban China: Impact on mortalities and approaches for establishing indoor guideline concentrations.Indoor Air 29, no. 4 (July 2019): 604–15. https://doi.org/10.1111/ina.12565.
Xiang J, Weschler CJ, Zhang J, Zhang L, Sun Z, Duan X, et al. Ozone in urban China: Impact on mortalities and approaches for establishing indoor guideline concentrations. Indoor air. 2019 Jul;29(4):604–15.
Xiang, Jianbang, et al. “Ozone in urban China: Impact on mortalities and approaches for establishing indoor guideline concentrations.Indoor Air, vol. 29, no. 4, July 2019, pp. 604–15. Epmc, doi:10.1111/ina.12565.
Xiang J, Weschler CJ, Zhang J, Zhang L, Sun Z, Duan X, Zhang Y. Ozone in urban China: Impact on mortalities and approaches for establishing indoor guideline concentrations. Indoor air. 2019 Jul;29(4):604–615.
Journal cover image

Published In

Indoor air

DOI

EISSN

1600-0668

ISSN

0905-6947

Publication Date

July 2019

Volume

29

Issue

4

Start / End Page

604 / 615

Related Subject Headings

  • Urban Population
  • Ozone
  • Mortality, Premature
  • Male
  • Humans
  • Female
  • Environmental Monitoring
  • China
  • Building & Construction
  • Air Pollution, Indoor