Particle Size Distributions of PCDD/Fs and PBDD/Fs in Ambient Air in a Suburban Area in Beijing, China
文献类型：期刊论文
| 作者 | Zhang, Xian; Zhu, Qing-Qing; Dong, Shu-Jun; Zhang, Hong-Xing; Wang, Xiao-Ke; Wang, Mei; Gao, Li-Rong; Zheng, Ming-Hui |
| 刊名 | AEROSOL AND AIR QUALITY RESEARCH
 |
| 出版日期 | 2015-10 |
| 卷号 | 15期号:5页码:1933-+ |
| 关键词 | Chlorinated dioxins Brominated dioxins Atmosphere Gas/Particle partitioning Distribution |
| 英文摘要 | The particle size distributions of polychlorinated and polybrominated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs and PBDD/Fs, respectively; together labeled PXDD/Fs) in ambient air in a suburban area in Beijing, China, were determined. The sums of the concentrations of the 17 2,3,7,8-PCDD/Fs and the sums of the concentrations of the 13 2,3,7,8-PBDD/Fs that were analyzed were 1499-2799 fg m(-3) (95.4-175.4 fg I-TEQ m(-3)) and 1171-2424 fg m(-3) (42.2-109.3 fg TEQ m(-3)), respectively. The PXDD/Fs were mainly (similar to 90%) in the particulate phase. Significant linear correlations were found between the gas/particle partition coefficients (K-p) and subcooled liquid vapor pressures (P-L(0)) of the PXDD/Fs. The regression coefficients indicated that the PCDD/Fs were mainly adsorbed to the particles and that the PBDD/Fs were mainly absorbed by the particles. The concentrations of the PXDD/Fs increased as the particle size decreased. The highest PXDD/F concentrations were found in the d(ae) < 1.0 mu m particles and more than 80% of the PXDD/Fs were found to be in the dae < 2.5 mu m particles. Similar regression coefficients were found for the K-P against P-L(0) for the different particle size fractions in the air. The PXDD/F distribution profiles in particles of different sizes were also studied. The lower chlorinated PCDD/Fs were found at higher concentrations in the coarser particles, and the higher chlorinated PCDD/Fs were mainly found in the finer particles. Polybrominated dibenzofurans, particularly the higher brominated dibenzofurans, were the dominant PBDD/F congeners. The contributions of the higher brominated dibenzofurans to the total PBDD/F concentrations decreased as the particle size increased, but that was not the case for the polybrominated dibenzo-p-dioxins. |
| 研究领域[WOS] | Environmental Sciences |
| WOS记录号 | WOS:000361971500020 |
| 公开日期 | 2016-03-15 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/32639]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhang, Xian,Zhu, Qing-Qing,Dong, Shu-Jun,et al. Particle Size Distributions of PCDD/Fs and PBDD/Fs in Ambient Air in a Suburban Area in Beijing, China[J]. AEROSOL AND AIR QUALITY RESEARCH,2015,15(5):1933-+. |
| APA | Zhang, Xian.,Zhu, Qing-Qing.,Dong, Shu-Jun.,Zhang, Hong-Xing.,Wang, Xiao-Ke.,...&Zheng, Ming-Hui.(2015).Particle Size Distributions of PCDD/Fs and PBDD/Fs in Ambient Air in a Suburban Area in Beijing, China.AEROSOL AND AIR QUALITY RESEARCH,15(5),1933-+. |
| MLA | Zhang, Xian,et al."Particle Size Distributions of PCDD/Fs and PBDD/Fs in Ambient Air in a Suburban Area in Beijing, China".AEROSOL AND AIR QUALITY RESEARCH 15.5(2015):1933-+. |
入库方式： OAI收割
来源：生态环境研究中心
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