CaronLetourneauFortin2015

Référence

Caron, J., Letourneau, G. and Fortin, J.A. (2015) Electrical conductivity breakthrough experiment and immobile water estimation in organic substrates: Is R = 1 a realistic assumption? Vadose Zone Journal, 14(9). (Scopus )

Résumé

Measuring electrical conductivity (EC) in outflow breakthrough curves (BTCs) is an approach commonly used to define transport parameters because it is rapid, inexpensive, and reliable. Earlier work has raised questions regarding the assumption that the retardation factor may be set at R = 1 when using EC as a tracer in organic soils. This study investigates the breakthrough of a NaCl tracer in a peat-sawdust mixture leached with distilled water. The results show that in such system, R may significantly differ from 1 because of sorption of Na+ and Cl– by peat with the R value estimated by batch experiments to reach 1.9 for Na+ and 1.5 for Cl–. The sorption properties may vary during solute transport because of uncoiling of humic and fulvic components with decreasing ionic strength of the solution. © Soil Science Society of America.

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@ARTICLE { CaronLetourneauFortin2015,
    AUTHOR = { Caron, J. and Letourneau, G. and Fortin, J.A. },
    TITLE = { Electrical conductivity breakthrough experiment and immobile water estimation in organic substrates: Is R = 1 a realistic assumption? },
    JOURNAL = { Vadose Zone Journal },
    YEAR = { 2015 },
    VOLUME = { 14 },
    NUMBER = { 9 },
    NOTE = { cited By 1 },
    ABSTRACT = { Measuring electrical conductivity (EC) in outflow breakthrough curves (BTCs) is an approach commonly used to define transport parameters because it is rapid, inexpensive, and reliable. Earlier work has raised questions regarding the assumption that the retardation factor may be set at R = 1 when using EC as a tracer in organic soils. This study investigates the breakthrough of a NaCl tracer in a peat-sawdust mixture leached with distilled water. The results show that in such system, R may significantly differ from 1 because of sorption of Na+ and Cl– by peat with the R value estimated by batch experiments to reach 1.9 for Na+ and 1.5 for Cl–. The sorption properties may vary during solute transport because of uncoiling of humic and fulvic components with decreasing ionic strength of the solution. © Soil Science Society of America. },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.2136/vzj2015.01.0014 },
    KEYWORDS = { Ionic strength; Peat; Sodium; Solute transport, Batch experiments; Break through curve; Breakthrough experiment; Electrical conductivity; Organic substrate; Retardation factors; Sorption properties; Transport parameters, Electric conductivity, electrical conductivity; experimental study; fulvic acid; humic acid; immobilization; leaching; organic soil; Revised Universal Soil Loss Equation; sodium chloride; solute transport; sorption; tracer },
    PAGE_COUNT = { 8 },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-84942134107&partnerID=40&md5=442a30541a7be18ffe5e8e37c03bc65e },
}

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