The carbonaceous aerosol levels still remain a challenge in the Beijing-Tianjin-Hebei region of China: Insights from continuous high temporal resolution measurements in multiple cities

Environment International
Dongsheng JiYuesi Wang

Abstract

Carbonaceous aerosols in high emission areas attract worldwide attention of the scientific community and the public due to their adverse impacts on the environment, human health and climate. However, long-term continuous hourly measurements are scarce on the regional scale. In this study, a one-year hourly measurement (from December 1, 2016 to November 30, 2017) of organic carbon (OC) and elemental carbon (EC) in airborne fine particles was performed using semi-continuous OC/EC analyzers in Beijing, Tianjin, Shijiazhuang and Tangshan in the Beijing-Tianjin-Hebei (BTH) region in China, which is one of high emission areas in China, even in the world. Marked spatiotemporal variations were observed. The highest concentrations of OC (22.8 ± 30.6 μg/m3) and EC (5.4 ± 6.5 μg/m3) occurred in Shijiangzhuang while the lowest concentrations of OC (11.0 ± 10.7 μg/m3) and EC (3.1 ± 3.6 μg/m3) were obtained in Beijing and Tianjin, respectively. Pronounced monthly, seasonal and diurnal variations of OC and EC were recorded. Compared to published data from the past two decades for the BTH region, our OC and EC levels were lower, implying some effect of recent measures for improving the air quality. Significant correlations of OC versus EC (p <...Continue Reading

References

Nov 23, 2001·Environmental Science & Technology·A V PolissarJ M Harris
Apr 30, 2005·Science·James HansenNicholas Tausnev
Jan 9, 2015·Environmental Science & Technology·August AnderssonÖrjan Gustafsson
Aug 10, 2016·The Science of the Total Environment·Dongsheng JiYuesi Wang
Feb 1, 2017·Environmental Pollution·Dongsheng JiYuesi Wang

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Citations

Dec 7, 2020·Journal of Environmental Sciences (China)·Xiaojuan HuangYuesi Wang
May 5, 2021·The Science of the Total Environment·Hong-Wei XiaoJing-Feng Wu

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