Mechanism of Myo-inositol Hexakisphosphate Sorption on Amorphous Aluminum Hydroxide: Spectroscopic Evidence for Rapid Surface Precipitation
文献类型：期刊论文
| 作者 | Yan, Yupeng1; Li, Wei2,3,5; Yang, Jun4; Zheng, Anmin4; Liu, Fan1; Feng, Xionghan1,2,3; Sparks, Donald L.2,3 |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2014-06-17 |
| 卷号 | 48期号:12页码:6735-6742 |
| 英文摘要 | Inositol hexakisphosphates are the most abundant organic phosphates (OPs) in most soils and sediments. Adsorption, desorption, and precipitation reactions at environmental interfaces govern the reactivity, speciation, mobility, and bioavailability of inositol hexakisphosphates in terrestrial and aquatic environments. However, surface complexation and precipitation reactions of inositol hexakisphosphates on soil minerals have not been well understood. Here we investigate the surface complexation-precipitation process and mechanism of myo-inositol hexakisphosphate (IHP, phytate) on amorphous aluminum hydroxide (AAH) using macroscopic sorption experiments and multiple spectroscopic tools. The AAH (16.01 mu mol m(-2)) exhibits much higher sorption density than boehmite (0.73 mu mol m(-2)) and alpha-Al2O3 (1.13 mu mol m(-2)). Kinetics of IHP sorption and accompanying OH- release, as well as zeta potential measurements, indicate that IHP is initially adsorbed on AAH through inner-sphere complexation via ligand exchange, followed by AAH dissolution and ternary complex formation; last, the ternary complexes rapidly transform to surface precipitates and bulk phase analogous to aluminum phytate (Al-IHP). The pH level, reaction time, and initial IHP loading evidently affect the interaction of IHP on AAH. In situ ATR-FTIR and solid-state NMR spectra further demonstrate that IHP sorbs on AAH and transforms to surface precipitates analogous to Al-IHP, consistent with the results of XRD analysis. This study indicates that active metal oxides such as AAH strongly mediate the speciation and behavior of IHP via rapid surface complexation-precipitation reactions, thus controlling the mobility and bioavailability of inositol phosphates in the environment. |
| WOS标题词 | Science & Technology ; Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Engineering, Environmental ; Environmental Sciences |
| 研究领域[WOS] | Engineering ; Environmental Sciences & Ecology |
| 关键词[WOS] | NUCLEAR-MAGNETIC-RESONANCE ; P-31 NMR-SPECTROSCOPY ; SOLID-STATE NMR ; INOSITOL HEXAKISPHOSPHATE ; ORGANIC PHOSPHORUS ; PHOSPHATE SORPTION ; INORGANIC PHOSPHATES ; ATR-FTIR ; MAS NMR ; ADSORPTION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000337646000027 |
| 公开日期 | 2015-07-14 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/1298]  |
| 专题 | 武汉物理与数学研究所_磁共振应用研究部 |
| 作者单位 | 1.Huazhong Agr Univ, Key Lab Arable Land Conservat Middle & Lower Reac, Minist Agr, Coll Resources & Environm, Wuhan 430070, Peoples R China 2.Univ Delaware, Delaware Environm Inst, Environm Soil Chem Grp, Newark, DE 19716 USA 3.Univ Delaware, Dept Plant & Soil Sci, Newark, DE 19716 USA 4.Chinese Acad Sci, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan Ctr Magnet Resonance, Wuhan Inst Phys & Math, Wuhan 430071, Peoples R China 5.Nanjing Univ, Sch Earth Sci & Engn, Minist Educ, Key Lab Surficial Geochem, Nanjing 210093, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yan, Yupeng,Li, Wei,Yang, Jun,et al. Mechanism of Myo-inositol Hexakisphosphate Sorption on Amorphous Aluminum Hydroxide: Spectroscopic Evidence for Rapid Surface Precipitation[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2014,48(12):6735-6742. |
| APA | Yan, Yupeng.,Li, Wei.,Yang, Jun.,Zheng, Anmin.,Liu, Fan.,...&Sparks, Donald L..(2014).Mechanism of Myo-inositol Hexakisphosphate Sorption on Amorphous Aluminum Hydroxide: Spectroscopic Evidence for Rapid Surface Precipitation.ENVIRONMENTAL SCIENCE & TECHNOLOGY,48(12),6735-6742. |
| MLA | Yan, Yupeng,et al."Mechanism of Myo-inositol Hexakisphosphate Sorption on Amorphous Aluminum Hydroxide: Spectroscopic Evidence for Rapid Surface Precipitation".ENVIRONMENTAL SCIENCE & TECHNOLOGY 48.12(2014):6735-6742. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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