Large Variations in Hygroscopic Properties of Unconventional Mineral Dust
文献类型：期刊论文
| 作者 | Peng, Chao; Gu, Wenjun; Li, Rui; Lin, Qinhao; Ma, Qingxin; Jia, Shiguo; Krishnan, Padmaja; Wang, Xinming; Tang, Mingjin |
| 刊名 | ACS EARTH AND SPACE CHEMISTRY
 |
| 出版日期 | 2020-10-15 |
| 卷号 | 4期号:10页码:1823-1830 |
| 关键词 | unconventional mineral dust fly ash hygroscopicity water adsorption water-soluble content |
| ISSN号 | 2472-3452 |
| 英文摘要 | Unconventional mineral dust, such as fly ash, road dust, and industrial dust, could significantly contribute to fine particulate matters; however, their hygroscopicity remains largely unexplored. In this work, a vapor sorption analyzer and a diffusion reflectance infrared Fourier transform spectroscopy (DRIFTS) were used to examine hygroscopic properties of 11 unconventional mineral dust samples as a function of relative humidity (RH) at 25 degrees C, including two municipal waste fly ash, one oil fly ash, one road dust, and seven coal fly ash. Large variations in hygroscopicity were observed for the 11 samples, and mass ratios of adsorbed water to the dry samples at 90% RH were found to vary from 0.0003 to 0.7340, showing positive dependence on both water-soluble ion contents and BET surface areas. In addition, hygroscopicity of the 11 unconventional mineral dust samples examined could be well described by the Freundlich adsorption isotherm model, with A(F) and B-F parameters found to be in the range of 3.5 x 10(-4)-1.29 and 0.12-1.58, respectively. Our study would significantly improve our knowledge of hygroscopicity properties of unconventional mineral dust. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/44548]  |
| 专题 | 生态环境研究中心_大气污染控制中心 |
| 推荐引用方式 GB/T 7714 | Peng, Chao,Gu, Wenjun,Li, Rui,et al. Large Variations in Hygroscopic Properties of Unconventional Mineral Dust[J]. ACS EARTH AND SPACE CHEMISTRY,2020,4(10):1823-1830. |
| APA | Peng, Chao.,Gu, Wenjun.,Li, Rui.,Lin, Qinhao.,Ma, Qingxin.,...&Tang, Mingjin.(2020).Large Variations in Hygroscopic Properties of Unconventional Mineral Dust.ACS EARTH AND SPACE CHEMISTRY,4(10),1823-1830. |
| MLA | Peng, Chao,et al."Large Variations in Hygroscopic Properties of Unconventional Mineral Dust".ACS EARTH AND SPACE CHEMISTRY 4.10(2020):1823-1830. |
入库方式： OAI收割
来源：生态环境研究中心
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