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	Negative Wien Effect Measurements for Exploring Polarization Processes of Cations Interacting with Negatively Charged Soil Particles
	Wang, Yu-Jun2; Li, Cheng-Bao2; Wang, Wei3; Jiang, Jun2; Zhou, Dong-Mei2; Xu, Renku2; Friedman, Shmulik P.1
刊名	SOIL SCIENCE SOCIETY OF AMERICA JOURNAL
	2009-03-01
卷号	73期号:2页码:569-578
ISSN号	0361-5995
DOI	10.2136/sssaj2008.0018
通讯作者	Friedman, Shmulik P.(vwsfried@volcani.agri.gov.il)
英文摘要	The Wien effect, that is, the dependence of the electrical conductivity of dilute suspensions of soil particles on electrical field strength, was explored in the intermediate field-strengths range of 0.9 X 10(6) to 5 X 10(6) V m(-1), at higher resolution than in previous studies. This enabled the detection of a local minimum in the electrical conductivity-field strength relationship in which the declining phase is termed the negative Wien effect. Suspensions of clay-size soil particles of three soil types, with various mono-, di-, and trivalent cations, were tested. A negative Wien effect was observed with homoionic soil particles saturated with divalent cations, with electrodialyzed soil particles, and with suspensions of black soil particles that contained organic matter. Two quantifiers of the declining and increasing slopes: (i) polarizability (counter ion polarization and re-adsorption); (ii) ion-stripping intensity-on the respective sides of the local minimum were used for characterizing the interaction between the soil particles and the counter ions. The higher mean ion-stripping intensities found for the Na(+) suspensions-twice those for the K(+) suspensions-reflect the easier stripping off of the Na cations and the stronger adsorption of the K cations. The mean ion-stripping intensities of all divalent cations for the three soils were lower than those determined for the monovalent ones, which reflects the tighter binding of the divalent cations. The Ca(2+) and Zn(2+) ions were stripped off most easily from the surfaces of soil particles, and tighter binding was found for Ph(2+) to brown soil and black soil, and for Cd(2+), to yellow-brown soil. In general, lower polarizabilities were correlated with higher ion-stripping intensities (e.g., for Ca(2+) and Zn(2+)). However, the exceptions (e.g., the polarizabilities of Cu(2+) and Pb(2+)) shed more light on the interaction between the soil particles and the cations. The proposed method of characterization is superior to other methods for characterizing soil particle-counter ion interactions because it characterizes adsorption directly and not via exchange measurement, and it is less laborious than, for example, exchange isotherm measurements.
收录类别	SCI
WOS关键词	ELECTRICAL DOUBLE-LAYER ; SALT-FREE MEDIUM ; ELECTROPHORETIC MOBILITY ; EXCHANGE EQUILIBRIA ; ELECTROKINETIC PHENOMENA ; COLLOIDAL SUSPENSION ; DISPERSED PARTICLES ; ADSORPTION ENERGIES ; MAGNESIUM EXCHANGE ; POTASSIUM-CALCIUM
WOS研究方向	Agriculture
WOS类目	Soil Science
语种	英语
出版者	SOIL SCI SOC AMER
WOS记录号	WOS:000264089300027
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2558762
专题	南京土壤研究所
通讯作者	Friedman, Shmulik P.
作者单位	1.Agr Res Org, Volcani Ctr, Inst Soil Water & Environ Sci, IL-50250 Bet Dagan, Israel 2.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agric, Nanjing 210008, Peoples R China 3.Nanjing Agr Univ, Coll Resource & Environ Sci, Nanjing 210095, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yu-Jun,Li, Cheng-Bao,Wang, Wei,et al. Negative Wien Effect Measurements for Exploring Polarization Processes of Cations Interacting with Negatively Charged Soil Particles[J]. SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,2009,73(2):569-578.
APA	Wang, Yu-Jun.,Li, Cheng-Bao.,Wang, Wei.,Jiang, Jun.,Zhou, Dong-Mei.,...&Friedman, Shmulik P..(2009).Negative Wien Effect Measurements for Exploring Polarization Processes of Cations Interacting with Negatively Charged Soil Particles.SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,73(2),569-578.
MLA	Wang, Yu-Jun,et al."Negative Wien Effect Measurements for Exploring Polarization Processes of Cations Interacting with Negatively Charged Soil Particles".SOIL SCIENCE SOCIETY OF AMERICA JOURNAL 73.2(2009):569-578.

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