An EXAFS study on the local structure around iron in atmospheric aerosols collected in the Qingdao area
文献类型：期刊论文
| 作者 | Qi, JH; Zhang, MP; Feng, LJ; Li, XG; Xie, Z; Sun, ZH; Hu, TD; Hu TD(胡天斗)
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| 刊名 | MOLECULES
 |
| 出版日期 | 2003 |
| 卷号 | 8期号:1页码:#REF! |
| 关键词 | atmospheric aerosol EXAFS iron speciation Qingdao |
| 通讯作者 | Li, XG (reprint author), Ocean Univ China, Coll Chem & Chem Engn, Qingdao 266003, Peoples R China. |
| 英文摘要 | The existing forms of Fe are of great interest since they have a profound effect on the biological availability of Fe. In this work, aerosol samples collected in different seasons and at different locations in the Qingdao region were examined by means of extended X-ray absorption fine structure (EXAFS) K-edge analysis of Fe, X-ray diffraction (XRD) and Fe content analysis. The results showed that an iron ion in aerosol particles is surrounded on average by 5.8 (coordinated) O ions. For the six samples examined, the coordination number of the first Fe-O coordination subshell is always 3 with a coordination distance (with O) in the range of 1.952similar to1.966+/-0.002 Angstrom, while the coordination number of the second subshell varies from 2.2 to 3.0 with a coordination distance of 2.108+/-0.002 Angstrom. The coordination is approximately consistent with that of alpha-Fe2O3, suggesting that iron in aerosol samples is mainly present in the form of alpha-Fe2O3. The fact that the coordination number in the second subshell is smaller than that of alpha-Fe2O3 might be an indication that there is a small amount of FeO mixed with alpha-Fe2O3 in aerosol particles. Existence of FeO is confirmed by a later XRD experiment. |
| 学科主题 | Chemistry |
| 类目[WOS] | Chemistry, Organic |
| 收录类别 | SCI |
| WOS记录号 | WOS:000180851700004 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/225625]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 推荐引用方式 GB/T 7714 | Qi, JH,Zhang, MP,Feng, LJ,et al. An EXAFS study on the local structure around iron in atmospheric aerosols collected in the Qingdao area[J]. MOLECULES,2003,8(1):#REF!. |
| APA | Qi, JH.,Zhang, MP.,Feng, LJ.,Li, XG.,Xie, Z.,...&胡天斗.(2003).An EXAFS study on the local structure around iron in atmospheric aerosols collected in the Qingdao area.MOLECULES,8(1),#REF!. |
| MLA | Qi, JH,et al."An EXAFS study on the local structure around iron in atmospheric aerosols collected in the Qingdao area".MOLECULES 8.1(2003):#REF!. |
入库方式： OAI收割
来源：高能物理研究所
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