Environment International (Nov 2021)

Association of fine particulate matter air pollution and its constituents with lung function: The China Pulmonary Health study

  • Ting Yang,
  • Renjie Chen,
  • Xiaoying Gu,
  • Jianying Xu,
  • Lan Yang,
  • Jianping Zhao,
  • Xiangyan Zhang,
  • Chunxue Bai,
  • Jian Kang,
  • Pixin Ran,
  • Huahao Shen,
  • Fuqiang Wen,
  • Kewu Huang,
  • Yahong Chen,
  • Tieying Sun,
  • Guangliang Shan,
  • Yingxiang Lin,
  • Sinan Wu,
  • Jianguo Zhu,
  • Ruiying Wang,
  • Zhihong Shi,
  • Yongjian Xu,
  • Xianwei Ye,
  • Yuanlin Song,
  • Qiuyue Wang,
  • Yumin Zhou,
  • Liren Ding,
  • Ting Yang,
  • Wanzhen Yao,
  • Yanfei Guo,
  • Fei Xiao,
  • Yong Lu,
  • Xiaoxia Peng,
  • Biao Zhang,
  • Dan Xiao,
  • Zuomin Wang,
  • Hong Zhang,
  • Xiaoning Bu,
  • Xiaolei Zhang,
  • Li An,
  • Shu Zhang,
  • Zhixin Cao,
  • Qingyuan Zhan,
  • Yuanhua Yang,
  • Lirong Liang,
  • Bin Cao,
  • Huaping Dai,
  • Aaron van Donkelaar,
  • Randall V. Martin,
  • Tangchun Wu,
  • Jiang He,
  • Haidong Kan,
  • Chen Wang

Journal volume & issue
Vol. 156
p. 106707

Abstract

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The associations of long-term exposure to various constituents of fine particulate matter (≤2.5 μm in aerodynamic diameter, PM2.5) air pollution with lung function were not clearly elucidated in developing countries. The aim was to evaluate the associations of long-term exposure to main constituents of PM2.5 with lung function in China. This is a nationwide, cross-sectional analysis among 50,991 study participants from the China Pulmonary Health study. Multivariable linear regression models were used to obtain differences of forced expiratory volume in 1 s (FEV1), forced vital capacity (FVC), FEV1/FVC, peak expiratory flow (PEF), and forced expiratory flow at 25–75% of exhaled FVC (FEF25-75%) associated with an interquartile range (IQR) change of PM2.5 or its constituents. Residential annual PM2.5 levels varied from 26 μg/m3 to 92 μg/m3 (average: 53 μg/m3). An IQR increase of PM2.5 concentrations was associated with lower FEV1 (19.82 mL, 95% CI: 11.30–28.33), FVC (17.45 mL, 95% CI: 7.16–27.74), PEF (86.64 mL/s, 95% CI: 59.77–113.52), and FEF25-75% (31.93 mL/s, 95% CI: 16.64–47.22). Black carbon, organic matter, ammonium, sulfate, and nitrate were negatively associated with most lung function indicators, with organic matter and nitrate showing consistently larger magnitude of associations than PM2.5 mass. This large-scale study provides first-hand epidemiological evidence that long-term exposure to ambient PM2.5 and some constituents, especially organic matter and nitrate, were associated with lower large- and small- airway function.

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