X-Ray Absorption Fine Structure (XAFS) Study of the Effects of pH on Pb(II) Sorption by Soil

doi:10.3964/j.issn.1000-0593(2010)12-3425-05

	X-Ray Absorption Fine Structure (XAFS) Study of the Effects of pH on Pb(II) Sorption by Soil
	Hu Ning-jing 1,2; Huang Peng 3; Luo Yong-ming 1; Hu Tian-dou 4; Xie Ya-ning 4; Wu Zi-yu 4
刊名	SPECTROSCOPY AND SPECTRAL ANALYSIS
	2010-12
卷号	30 期号:12 页码:3425-3429
关键词	Pb Inner-sphere sorption Precipitation Soil XAFS
ISSN号	1000-0593
DOI	10.3964/j.issn.1000-0593(2010)12-3425-05
英文摘要	Combined batch sorption and in situ X-ray absorption fine structure (XAFS) provide direct assessment of the mechanisms for Pb(II) sorption at the soil-water interface under different pH conditions. The XAFS data indicated that the innersphere Pb sorption complex with ionic character (Pb-4 (OH)(4)(4+)) dominated the Pb surface speciation, and the outer-sphere Pb sorption complex and the precipitation of calcium carbonate containing Pb(PbCaCO3) were also involved in the adsorption samples. Coordination number and radial distance of the first-shell Pb-O decreased from 0. 172 7 to 0. 166 6 nm and the percentage of inner-sphere complexes increased when the initial pH changed from 6. 0 to 8. 5, indicating that the mechanism of Pb(II) sorption by the soil was pH-dependent.
WOS关键词	WATER INTERFACES ; ORGANIC-MATTER ; LEAD SORPTION ; ADSORPTION ; EXAFS ; COMPLEXATION ; METALS
WOS研究方向	Spectroscopy
语种	中文
出版者	OFFICE SPECTROSCOPY & SPECTRAL ANALYSIS
WOS记录号	WOS:000284987600058
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/25717]
专题	自然资源部第一海洋研究所
通讯作者	Luo Yong-ming
作者单位	1.Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Peoples R China 2.State Ocean Adm, Inst Oceanog 1, Qingdao 266061, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Qingdao 266072, Peoples R China 4.Chinese Acad Sci, Beijing Synchrotron Radiat Facil, Inst High Energy Phys, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Hu Ning-jing,Huang Peng,Luo Yong-ming,et al. X-Ray Absorption Fine Structure (XAFS) Study of the Effects of pH on Pb(II) Sorption by Soil[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2010,30(12):3425-3429.
APA	Hu Ning-jing,Huang Peng,Luo Yong-ming,Hu Tian-dou,Xie Ya-ning,&Wu Zi-yu.(2010).X-Ray Absorption Fine Structure (XAFS) Study of the Effects of pH on Pb(II) Sorption by Soil.SPECTROSCOPY AND SPECTRAL ANALYSIS,30(12),3425-3429.
MLA	Hu Ning-jing,et al."X-Ray Absorption Fine Structure (XAFS) Study of the Effects of pH on Pb(II) Sorption by Soil".SPECTROSCOPY AND SPECTRAL ANALYSIS 30.12(2010):3425-3429.