| Title | Estimated emissions of chlorofluorocarbons, hydrochlorofluorocarbons, and hydrofluorocarbons based on an interspecies correlation method in the Pearl River Delta region, China |
| Authors | Wu, Jing Fang, Xuekun Martin, Jonathan W. Zhai, Zihan Su, Shenshen Hu, Xia Han, Jiarui Lu, Sihua Wang, Chen Zhang, Jianbo Hu, Jianxin |
| Affiliation | Peking Univ, Coll Environm Sci & Engn, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100871, Peoples R China. Univ Alberta, Dept Lab Med & Pathol, Div Analyt & Environm Toxicol, Edmonton, AB, Canada. Peking Univ, Coll Environm Sci & Engn, 5 Yiheyuan Rd, Beijing 100871, Peoples R China. |
| Keywords | Interspecies correlation Emission estimation Global warming Ozone depletion MIXING RATIOS HALOCARBONS POLLUTION CITIES CO |
| Issue Date | 2014 |
| Publisher | science of the total environment |
| Citation | SCIENCE OF THE TOTAL ENVIRONMENT.2014,470,829-834. |
| Abstract | Although many studies have been conducted in recent years on the emissions of chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), and hydrofluorocarbons (HFCs) at the large regional (such as East Asia) and national scales, relatively few studies have been conducted for cities or metropolitan areas. In this study, 192 air samples were collected in the Pearl River Delta (PRD) region of China in November 2010. The atmospheric mixing ratios of six halocarbons were analyzed, including trichlorofluoromethane (CFC-11, CCl3F), dichlorodifluoromethane (CFC-12, CCl2F2), monochlorodifluoromethane (HCFC-22, CHClF2), 1,1-dichloro-1-fluoroethane (HCFC-141b, CH3CCl2F), 1-dichloro-1,1-fluoroethane (HCFC-142b, CH3CClF2), and 1,1,1,2-tetrafluoroethane (HFC-134a, CH2FCF3), and their emissions were estimated based on an interspecies correlation method using HCFC-22 as the reference species. The results showed no significant change in the regional concentration and emission of CFC in the past 10 years, suggesting that the continuous regional emission of CFC has had no significant effect on the CFC regional concentration in the PRD region. Concentrations and emissions of HCFCs and HFCs are significantly higher compared to previous research in the PRD region (P < 0.05). The largest emission was for HCFC-22, most likely due to its substitution for CFC-12 in the industrial and commercial refrigeration subsector, and the rapid development of the room air-conditioner and extruded polystyrene subsectors. The PRD's ODP-weighted emissions of the target HCFCs provided 9% (7-12%) of the national emissions for the corresponding species. The PRD's GWP-weighted emissions of the target HCFCs and HFC-134a account for 10% (7-12%) and 8% (7-9%), respectively, of the national emissions for the corresponding species, and thus are important contributions to China's total emissions. (C) 2013 Elsevier B.V. All rights reserved. |
| URI | http://hdl.handle.net/20.500.11897/158784 |
| ISSN | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2013.09.071 |
| Indexed | SCI(E) EI PubMed |
| Appears in Collections: | 环境科学与工程学院 环境模拟与污染控制国家重点联合实验室 |
