| 黄土表面酸碱性质的研究 |
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| 引用本文： | 刘文新,储昭升,汤鸿霄,钱天伟,李书绅,李祯庭,武贵宾.黄土表面酸碱性质的研究[J].环境科学学报,2003,23(1):6-10. |
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| 作者姓名： | 刘文新 储昭升 汤鸿霄 钱天伟 李书绅 李祯庭 武贵宾 |
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| 作者单位： | 1. 环境水化学国家重点实验室,中国科学院生态环境研究中心,北京,100085
2. 中国辐射防护研究院,太原,030006 |
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| 基金项目： | 国家自然科学基金重点项目 (2 0 0 370 10 )，中国辐射防护研究院横向课题 (合同登记号2 0 0 1110 82 0 0 5 78)的资助 |
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| 摘 要： | 在不同浓度支持电解质条件下，利用滴定方法研究黄土样品的表面酸碱属性，将酸量滴定上清液作为体系空白以补偿固体颗粒溶解和份间络合反应对定量估算子质子消耗的影响，两种简易的表面络合模式的拟合结果表明，恒定容量模型和扩散层模式分别适用于高离子强度（0.1mg/L）和低离子强度（0.01和0.005mol/L）条件下黄土表面的质子反应过程。
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| 关 键 词： | 表面酸碱性质 中国黄土 酸碱滴定 表面质子反应 恒定容量模式 扩散层模式 土壤污染 |
| 文章编号： | 0253-2468(2003)-01-0006-05 |
| 收稿时间： | 2002/3/28 0:00:00 |
| 修稿时间： | 2002/3/28 0:00:00 |
Study on surface acid-base properties of Chinese loess |
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| LIU Wenxin,CHU Zhaosheng,TANG Hongxiao,QIAN Tianwei,LI Shushen,LI Zhenting and WU Guibin.Study on surface acid-base properties of Chinese loess[J].Acta Scientiae Circumstantiae,2003,23(1):6-10. |
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| Authors: | LIU Wenxin CHU Zhaosheng TANG Hongxiao QIAN Tianwei LI Shushen LI Zhenting and WU Guibin |
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| Institution: | State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085,State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085,State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085,China Institute for Radiation Protection, Taiyuan 030006,China Institute for Radiation Protection, Taiyuan 030006,China Institute for Radiation Protection, Taiyuan 030006 and China Institute for Radiation Protection, Taiyuan 030006 |
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| Abstract: | Titration was used to study the surface acid-base characteristics of a Chinese loess sample at different concentrations of supporting electrolyte. The acidimetric supernatant was considered as the system blank to compensate the influence of particle dissolution and complex reactions between soluble components on estimation of proton consumption. The simulation results of two simple surface complexation models indicated that the constant capacitance model and the diffuse layer model were applicable to the high ionic strength (0.1*!mol/L) and to the low ionic strengths (0.01 and 0.005*!mol/L), respectively. |
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| Keywords: | Chinese loess acid-base titration surface proton reaction constant capacitance model diffuse layer model |
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