X-Ray Absorption Spectroscopic Evidence for the Formation of Pb(II) Inner-Sphere Adsorption Complexes and Precipitates at the Alkaline Soil-Water Interface

	X-Ray Absorption Spectroscopic Evidence for the Formation of Pb(II) Inner-Sphere Adsorption Complexes and Precipitates at the Alkaline Soil-Water Interface
	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)
刊名	SPECTROSCOPY AND SPECTRAL ANALYSIS
	2011
卷号	31 期号:2 页码:560-564
关键词	Pb Inner-sphere sorption Precipitation Outer-sphere sorption Alkaline soil XAFS
其他题名	碱性土壤对Ｐｂ的吸附特性
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
英文摘要	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).
学科主题	Spectroscopy
类目[WOS]	Spectroscopy
研究领域[WOS]	Spectroscopy
原文出处	SCI
语种	英语
WOS记录号	WOS:000287263400062
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/237956]
专题	高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 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.