天然水体中悬浮颗粒物电泳性质的研究——Ⅰ.离子强度及pH对悬浮颗粒物电泳淌度的影响

王保栋; 张正斌; 刘莲生; 郑士淮

天然水体中悬浮颗粒物电泳性质的研究——Ⅰ.离子强度及pH对悬浮颗粒物电泳淌度的影响

青岛海洋大学海洋化学系

基金项目: 国家自然科学基金资助项目.

计量
- 文章访问数: 764
- HTML全文浏览量: 8
- PDF下载量: 730
- 被引次数: 0
出版历程
- 收稿日期: 1988-10-07
- 修回日期: 1989-04-17

摘要

摘要: 本文采用天然悬浮物力最常见的粘土(包括高岭石、伊利石、蒙脱石)和水合氧化物(包括α-FeOOH、γ-AlOOH)为模拟颗粒物,系统地研究了介质的离子强度,得到了比较完整的关系曲线.实验结果表明,不管颗粒物带何种电荷,当介质的离子强度介于10^-4-4×10^-2mol/l之间时,随着离子强度的增大,悬浮颗粒物电泳淌度的绝对值也随着增大,这基本上可用Zukoski等的Stern层动力学模型来解释.当介质离子强度大于4×10²mol/l时,电泳淌度的绝对值反之随着离子强度的增大而减少,这可用双电层厚度变薄来解释.在电泳淌度与介质pH关系研究中,测得一种新型的M-pH曲线,这可解释对界面羟基的两性变化和离子强度效应“反常”之故.

HTML全文

参考文献(21)

Stumm,W.and J.J.Morgan,Aquatic Chernislry,2nd Edition,Wiley,New York,1981.

汤鸿霄,胶体与界面化学,安徽大学学报(自然科学版)(胶体与界面化学专辑),1987,13-24.

张正斌等,海洋化学(上),上海科学技术出版社,1984,8.

Pravdic,V.,Surface charge characterization of sea sediments,Limnol Oceanogr.,15(1970),230-233.

Neihof,R.A.a nd G.I.Loeb,The surface change of particulate matter in seawater,Limnol.Oceanogr.,17(1972),1:7-16.

Nei hof,R.A.and G.I.Loed,Dissolved organic matter in seawater and the electric charge of immersed surfaces,J.Mar.Res.,32(1974),5-12.

Hunter,K.A.a nd P.S.Liss,The surface charge of suspended particles in estuarine and coastal waters,Nature,282(1979),823-825.

Hunter,K.A.,Microelectrophoretic properties of natural surface-active organic matter in coastal seawater,Limnol.Oreanogr.,25(1980),5:807-822.

Loder,T,C.and P.S.Liss,Control by organic coatings of the surface charge of estuarine suspended particles,Limnol.Oceanogr.30(1985),2,:418-421.

Ottewill,R.H.and L.R.Holloway,Electrokinetic properties of particles,in "The Nature of Seawater"(edited by E.D,Goldberg),Dahlem konferenzen,1975,510.

张正斌、刘莲生著,海洋物理化学,科学出版社,北京,1989,811.

Zukos ki,C.F.and D.A.Saville,The interpretation of electrokinetic measurements using a dynamic model of the stern layer Ⅰ,the dynamic model,Ⅱ:comparisons between theory and experiment,J.Colloid Inrerjace Sci.,114,(1986),1:32-35.

Zukoski,C.F.and D.A.Saville,An experimental test of electrokinetic theory using measurements of e1ectrphoretic mobility and electrical conductivity,J.Colloid Intrrface Sci.,107(1985),2:322-333.

Parks,G.A.,Adsorption in the marine environment,in Chemical Oceanagraphy(2nd edition),Vol Ⅰ,Academic Press,London.1975,241-308.

Parks,G.A.and P.L.de Bruyn,The zero point of charge of oxides,J.Phys.Chem.,66(1962),967-973.

Williams,D.J.A.and K.P.Willams,Electrophoresis and zeta potential of kaolinite,J.Colloid Interjace Sci.,65(1978),1:79-87.

胡泳絮、蔡阿根,徽电泳法测定水合氧化铁的等电点,台湾海峡,5(1986),1:38-43.

Touret,Christion,Elect roki netic behavior of a montmorillonite in water,CA;12(1969)47891.

Zhang Zhengbin and Liu Liansheng,Theory of interfacial stepwiseion;coordination particles exchange and its appliications,China Ocean Press,Beijing,1985,334.

郑士淮等,海水中悬浮粒子的微电泳研究Ⅰ:针铁矿、δ-MnO₂的电泳淌度与酸度、重金属离子及有机物浓度的关系,山东海洋学院学报,17(1987),4:36-42.

张正斌、刘莲生等,海水中Cu,Zn,Cd与γ Al₂O₃作用的分级交换等温线,海洋与湖沼,18(1987),1:76-85.

施引文献

资源附件(0)

访问统计