Yixiu Zhao1, Kangping Cui 1, Shida Chen1, Zhiming Yin1, How-Ran Chao 2, Guo-Ping Chang-Chien3,4


School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 246011, China
Emerging Compounds Research Center, Environmental Science and Engineering, National Pingtung University of Science and Technology, Neipu, Pintung 91201, Taiwan
Center for Environmental Toxin and Emerging-Contaminant Research, Cheng Shiu University, Kaohsiung 83347, Taiwan
Super Micro Mass Research and Technology Center, Cheng Shiu University, Kaohsiung 83347, Taiwan



Received: November 3, 2018
Revised: November 25, 2018
Accepted: November 25, 2018
Download Citation: ||https://doi.org/10.4209/aaqr.2018.11.0395 

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Cite this article:
Zhao, Y., Cui, K., Chen, S., Yin, Z., Chao, H.R. and Chang-Chien, G.P. (2018). Atmospheric PM2.5, Total PCDD/Fs-WHO2005-TEQ Level and Wet Deposition: Cases of Jinan and Weihai Cities, China. Aerosol Air Qual. Res. 18: 3081-3095. https://doi.org/10.4209/aaqr.2018.11.0395


HIGHLIGHTS

  • Atmospheric PM2.5 Concentration.
  • Atmospheric Total PCDD/Fs-WHO2005-TEQ Concentration.
  • Atmospheric Wet Deposition of Total PCDD/Fs-WHO2005-TEQ.
  • Regression Analysis for AQI and Total PCDD/Fs-WHO2005-TEQ.

ABSTRACT


The atmospheric PM2.5, total PCDD/Fs-WHO2005-TEQ concentrations, PM2.5-bound total PCDD/Fs-WHO2005-TEQ content, gas-particle partitioning and wet deposition of PCDD/Fs in Jinan and Weihai, from 2015 to 2017, were investigated, respectively. Furthermore, a regression analysis of the air quality index (AQI) and total PCDD/Fs-WHO2005-TEQ concentrations was studied as well. From 2015–2017, the three-year average PM2.5 concentrations in Jinan and Weihai were 76.1 and 32.9 µg m–3, respectively. The three-year average total PCDD/Fs-WHO2005-TEQ concentrations in Jinan and Weihai were 0.0866 and 0.0396 pg-WHO2005-TEQ m–3, respectively, indicating that maritime climate regulation contributes to the spread of pollutants. The three-year average fraction of gas phase total PCDD/Fs-WHO2005-TEQ concentrations in spring, summer, autumn, and winter in Jinan were 26.1%, 63.8%, 30.5% and 4.62%, respectively; while, those in Weihai were 30.7%, 74.5%, 44.4%, and 8.41%, respectively. In 2016, the annual wet deposition fluxes in Jinan and Weihai were 1288 and 483 pg WHO2005-TEQ m–2 year–1, respectively. The annual scavenging ratios of total PCDD/Fs-WHO2005-TEQ were 33080 and 30870 in Jinan and Weihai, respectively. The total concentration of PCDD/Fs-WHO2005-TEQ increased with an increase of AQI and showed a positive correlation; the R2 values of three years (2015, 2016, and 2017) were 0.873, 0.847, and 0.744, respectively. Therefore, knowing the AQI value, the total concentration of PCDD/Fs-WHO2005-TEQ in the ambient air can be roughly estimated using a regression equation.


Keywords: PM2.5; PM10; PCDD/Fs; Wet deposition; Scavenging ratio; AQI; Regression analysis; TEQ.

 


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