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| 用悬液Wien效应探测阳离子在黄棕壤和黑土胶粒双电层中分布的初步研究 | |
| 引用本文： | 程程,李成保,姜军,徐仁扣,周立祥.用悬液Wien效应探测阳离子在黄棕壤和黑土胶粒双电层中分布的初步研究[J].环境科学学报,2010,30(5):1043-1051. |
| 作者姓名： | 程程 李成保 姜军 徐仁扣 周立祥 |
| 作者单位： | 1. 南京农业大学资源与环境科学学院,南京,210095;土壤和农业可持续发展国家重点实验室(中国科学院南京土壤研究所),南京,210008 2. 土壤和农业可持续发展国家重点实验室(中国科学院南京土壤研究所),南京,210008 3. 南京农业大学资源与环境科学学院,南京,210095 |
| 基金项目： | 国家自然科学基金项目（No. 40701079） |
| 摘 要： | 研究了采用悬液Wien效应测定反号离子在土壤胶粒双电层中分布的方法原理,及不同阳离子在黄棕壤和黑土胶粒双电层中的分布规律.试验条件下,这2种土壤的Na+饱和胶粒的表面电导率最大,而使表面电导率最小的阳离子是不同的,黄棕壤为Cu2+,黑土则为Cd2+.黄棕壤和黑土胶粒的表面电导率随阳离子的变化顺序分别为Na+K+Cd2+Pb2+Ca2+La3+Cu2+和Na+K+Pb2+La3+Cu2+Ca2+Cd2+.除Na+和Cd2+外,几乎所有阳离子在黄棕壤胶粒扩散层中的比率(ECS/ECad)明显小于黑土,其中Cd2+在黄棕壤和黑土胶粒扩散层中的比率分别为0.174和0.0872.黄棕壤和黑土胶粒的ζ电位随阳离子价型的变化顺序,除了钙饱和黑土外,与土壤胶粒表面电导率随阳离子价型的变化顺序完全一致. |
| 关 键 词： | 扩散层 动电电位 极化率 表面电导率 |
| 收稿时间： | 7/30/2009 5:21:23 PM |
| 修稿时间： | 2009/11/26 0:00:00 |
Preliminary study of cation distribution in the electrical double layers of colloidal yellow-brown and black soil particles by Wien effect measurements |
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| CHENG Cheng,LI Chengbao,JIANG Jun,XU Renkou and ZHOU Lixiang.Preliminary study of cation distribution in the electrical double layers of colloidal yellow-brown and black soil particles by Wien effect measurements[J].Acta Scientiae Circumstantiae,2010,30(5):1043-1051. | |
| Authors: | CHENG Cheng LI Chengbao JIANG Jun XU Renkou and ZHOU Lixiang |
| Institution: | 1. College of Resources and Environmental Science, Nanjing Agricultural University, Nanjing 210095; 2. State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, the Chinese Academy of Sciences, Nanjing 210008,State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, the Chinese Academy of Sciences, Nanjing 210008,State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, the Chinese Academy of Sciences, Nanjing 210008,State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, the Chinese Academy of Sciences, Nanjing 210008 and College of Resources and Environmental Science, Nanjing Agricultural University, Nanjing 210095 |
| Abstract: | |
| Keywords: | Diffuse layer electrokinetic potential polarizability surface electrical conductivity |
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