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X-Ray Absorption Spectroscopic Evidence for the Formation of Pb(II) Inner-Sphere Adsorption Complexes and Precipitates at the Alkaline Soil-Water Interface
其他题名碱性土壤对Pb的吸附特性
Hu, NJ; Luo, YM; Huang, P; Hu, TD; Xie, YN; Wu, ZY; Shi, XF; Hu TD(胡天斗); Xie YN(谢亚宁); Wu ZY(吴自玉)
2011
发表期刊SPECTROSCOPY AND SPECTRAL ANALYSIS
卷号31期号:2页码:560-564
通讯作者[Hu Ning-jing ; Luo Yong-ming] Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Peoples R China ; [Hu Ning-jing ; Shi Xue-fa] State Ocean Adm, Inst Oceanog 1, Qingdao 266061, Peoples R China ; [Huang Peng] Chinese Acad Sci, Inst Oceanol, Qingdao 266072, Peoples R China ; [Hu Tian-dou ; Xie Ya-ning ; Wu Zi-yu] Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100039, Peoples R China
摘要Adsorption mechanisms of Pb on soil with high CaCO(3) content were investigated by combined batch sorption and X-ray absorption fine structure (XAFS). Date from the batch equilibrium studies showed that Pb sorption was nonlinear and was well fitted to Langmiur isotherm. The XAFS data indicated that Pb could be adsorbed via the inner-sphere complex, the precipitation of calcium carbonate containing Pb (PbCaCO(3)), and outer-sphere Pb sorption complex. The formations of inner-sphere complexes and PbCaCO(3) implied strong metal interactions with the surfaces the mechanistic reason for the affinity of Pb for CaCO(3) as observed in macroscopic studies. At low metal concentration, 500 mg . L(-1) of initial Pb, radial distance of the first-shell Pb-O (R(1)) was 0. 169 2 nm, however, at 1 000 mg . L(-1) of initial Pb, the R(1) was 0. 166 8 nm. These revealed that the percentage of inner-sphere complexes increased when the initial Pb was increased from 500 to 1 000 mg . L(-1).
文章类型Article
关键词Pb Inner-sphere sorption Precipitation Outer-sphere sorption Alkaline soil XAFS
学科领域Spectroscopy
DOI10.3964/j.issn.1000-0593(2011)02-0560-05
研究领域[WOS]Spectroscopy
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语种英语
WOS类目Spectroscopy
WOS记录号WOS:000287263400062
引用统计
被引频次:1[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/311005/237956
专题多学科研究中心
作者单位中国科学院高能物理研究所
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GB/T 7714
Hu, NJ,Luo, YM,Huang, P,et al. X-Ray Absorption Spectroscopic Evidence for the Formation of Pb(II) Inner-Sphere Adsorption Complexes and Precipitates at the Alkaline Soil-Water Interface[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2011,31(2):560-564.
APA Hu, NJ.,Luo, YM.,Huang, P.,Hu, TD.,Xie, YN.,...&吴自玉.(2011).X-Ray Absorption Spectroscopic Evidence for the Formation of Pb(II) Inner-Sphere Adsorption Complexes and Precipitates at the Alkaline Soil-Water Interface.SPECTROSCOPY AND SPECTRAL ANALYSIS,31(2),560-564.
MLA Hu, NJ,et al."X-Ray Absorption Spectroscopic Evidence for the Formation of Pb(II) Inner-Sphere Adsorption Complexes and Precipitates at the Alkaline Soil-Water Interface".SPECTROSCOPY AND SPECTRAL ANALYSIS 31.2(2011):560-564.
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