| Binding and adsorption energies of heavy metal ions with hapli-udic argosol and ferri-udic argosol particles | |
| Wang Yu-Jun; Li Cheng-Bao; Wang Wei; Zhou Dong-Mei; Xu Ren-Kou | |
| 刊名 | PEDOSPHERE
 |
| 2007-12-01 | |
| 卷号 | 17期号:6页码:688-696 |
| 关键词 | adsorption energy Argosol binding energy heavy metal ion Wien effect |
| ISSN号 | 1002-0160 |
| 通讯作者 | Li Cheng-Bao(chbli@issas.ac.cn) |
| 英文摘要 | Gibbs free binding energy and adsorption energy between cations and charged soil particles were used to evaluate the interactions between ions and soil particles. The distribution of Gibbs free adsorption energies could not be determined experimentally before the development of Wien effect measurements in dilute soil suspensions. In the current study, energy relationships between heavy metal ions and particles of Hapli-Udic Argosol (Alfisol) and Ferri-Udic Argosol were inferred from Wien effect measurements in dilute suspensions of homoionic soil particles (< 2 mu m) of the two soils, which were saturated with ions of five heavy metals, in deionized water. The mean Gibbs free binding energies of the heave metal ions with Hapli-Udic Argosol and Ferri-Udic Argosol particles diminished in the order of Pb2+ > Ca2+ > Cu2+ > Zn2+ > Cr3+, where the range of binding energies for Hapli-Udic Argosol (7.25-9.32 kJ mol(-1)) was similar to that for Ferri-Udic Argosol (7.43-9.35 kJ mol(-1)). The electrical field-dependent mean Gibbs free adsorption energies of these heavy metal ions for Hapli-Udic Argosol and for Ferri-Udic Argosol descended in the order: Cu2+ >= Cd2+ >= Pb2+ > Zn2+ > Cr3+, and Cd2+ > Cu2+ > Pb2+ > Zn2+ > Cr3+, respectively. The mean Gibbs free adsorption energies of Cu2+, Zn2+, Cd2+, Pb2+, and Cr3+ at a field strength of 200 kV cm(-1), for example, were in the range of 0.8-3.2 kJ mol(-1) for the two soils. |
| 收录类别 | SCI |
| WOS关键词 | CALCAREOUS SOILS ; COMPETITIVE SORPTION ; BRAZILIAN SOILS ; ZINC ADSORPTION ; SUSPENSIONS ; CADMIUM ; SELECTIVITY ; GOETHITE ; CATIONS ; RATES |
| WOS研究方向 | Agriculture |
| WOS类目 | Soil Science |
| 语种 | 英语 |
| 出版者 | SCIENCE CHINA PRESS |
| WOS记录号 | WOS:000251388200002 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2558703 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Li Cheng-Bao |
| 作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, Nanjing 210008, Peoples R China 2.Nanjing Agr Univ, Coll Resource & Environm, Nanjing 210095, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang Yu-Jun,Li Cheng-Bao,Wang Wei,et al. Binding and adsorption energies of heavy metal ions with hapli-udic argosol and ferri-udic argosol particles[J]. PEDOSPHERE,2007,17(6):688-696. |
| APA | Wang Yu-Jun,Li Cheng-Bao,Wang Wei,Zhou Dong-Mei,&Xu Ren-Kou.(2007).Binding and adsorption energies of heavy metal ions with hapli-udic argosol and ferri-udic argosol particles.PEDOSPHERE,17(6),688-696. |
| MLA | Wang Yu-Jun,et al."Binding and adsorption energies of heavy metal ions with hapli-udic argosol and ferri-udic argosol particles".PEDOSPHERE 17.6(2007):688-696. |
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