Point of zero charge and intrinsic surface reaction equilibrium constants of meadow brown soil in northeast of China
文献类型：期刊论文
| 作者 | Xu, J ; Hou, WG ; Zhou, WZ ; Tai, PD ; Wang, WX |
| 刊名 | ACTA CHIMICA SINICA
 |
| 出版日期 | 2007 |
| 卷号 | 65期号:13页码:1191-1196 |
| 关键词 | clay point of zero charge interface reaction model meadow brown soil in northeast of China |
| ISSN号 | 0567-7351 |
| 通讯作者 | Hou, WG, Shandong Univ, Environm Res Inst, Jinan 250100, Peoples R China |
| 中文摘要 | The point of zero net charge (PZNC) for the meadow brown soil in northeast of China with structural negative charges was measured by three methods: potentiometric titration, mass titration and inert electrolyte titration, showing that for the meadow brown soil which possesses structural negative charges, a PZNC independent of electrolyte concentration exists, and the values of pH(PZNC) obtained by the above three methods are 2.9, 5.0 and 3.3, respectively. It was found that the values of pHPZNc determined by potentiometric titration and inert electrolyte titration were very close while that determined by mass titration was relatively high. The estimating method of the total density of surface proton-active sites (N-s) in literatures was improved to obtain the N-s value of the meadow brown soil in northeast of China, which is 2.5 mmol. g(-1). According to the values of pH(PZNC), N-s and structural negative charge density (sigma(st)) measured, the intrinsic surface reaction equilibrium constants, pK of 1-pK model, pK(a1)(int) and pK(a2)(int) of 2-pK model, were directly calculated to be 3.37, 2.42 and 4.32, respectively, for the meadow brown soil in northeast of China. |
| 学科主题 | Chemistry, Multidisciplinary |
| 收录类别 | SCI |
| 语种 | 中文 |
| WOS记录号 | WOS:000248363700001 |
| 公开日期 | 2011-09-23 |
| 源URL | [http://210.72.129.5/handle/321005/54685]  |
| 专题 | 沈阳应用生态研究所_沈阳应用生态研究所_期刊论文 |
| 推荐引用方式 GB/T 7714 | Xu, J,Hou, WG,Zhou, WZ,et al. Point of zero charge and intrinsic surface reaction equilibrium constants of meadow brown soil in northeast of China[J]. ACTA CHIMICA SINICA,2007,65(13):1191-1196. |
| APA | Xu, J,Hou, WG,Zhou, WZ,Tai, PD,&Wang, WX.(2007).Point of zero charge and intrinsic surface reaction equilibrium constants of meadow brown soil in northeast of China.ACTA CHIMICA SINICA,65(13),1191-1196. |
| MLA | Xu, J,et al."Point of zero charge and intrinsic surface reaction equilibrium constants of meadow brown soil in northeast of China".ACTA CHIMICA SINICA 65.13(2007):1191-1196. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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