An EXAFS study on the local structure around iron in atmospheric aerosols collected in the Qingdao area
Qi, JH; Zhang, MP; Feng, LJ; Li, XG; Xie, Z; Sun, ZH; Hu, TD; Hu TD(胡天斗)
刊名MOLECULES
2003
卷号8期号:1页码:#REF!
关键词atmospheric aerosol EXAFS iron speciation Qingdao
学科分类Chemistry
DOI10.3390/80100031
通讯作者Li, XG (reprint author), Ocean Univ China, Coll Chem & Chem Engn, Qingdao 266003, Peoples R China.
文章类型Article; Proceedings Paper
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.
类目[WOS]Chemistry, Organic
收录类别SCI
WOS记录号WOS:000180851700004
引用统计
被引频次:10[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/225625
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
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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!.
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