Výsledky vyhledávání - "Jesper Gamst"

Determination of Solute Organic Concentration in Contaminated Soils Using a Chemical-equilibrium Soil Column System

Autor: Peter Kjeldsen, Thomas Højlund Christensen, Jesper Gamst

Publikováno v: Water, Air, and Soil Pollution. 183:377-389

Groundwater risk assessment of contaminated soils implies determination of the solute concentration leaching out of the soil. Determination based on estimation techniques or simple experimental batch approach has proven inadequate. Two chemical equil

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::25e31dcdace2d9bf557f054c7caadbdc
https://doi.org/10.1007/s11270-007-9386-0

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TIME-DEPENDENCY OF NAPHTHALENE SORPTION IN SOIL: SIMPLE RATE-, DIFFUSION-, AND ISOTHERM-PARAMETER-BASED MODELS

Autor: Jesper Gamst, Kate M. Scow, Kaj Henriksen, Per Moldrup, Dennis E. Rolston, Toshiko Komatsu

Publikováno v: Gamst, J, Møldrup, P, Rolston, D E, Scow, K M, Henriksen, K & Komatsu, T 2004, ' Time-dependency of naphthalene sorption in soil: Simple rate-diffusion-and isotherm-parameter-based models ', Soil Science, vol. 169, no. 5, pp. 342-354 .

Sorption mechanisms and kinetics govern contaminant fate and bioavailability in soil to a great extent. In this study, temporal development of naphthalene sorption was measured on four soils and showed continuously increasing sorption with time. Two

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::72dca76f0aea34e45c3eccdee34d1ecc
https://doi.org/10.1097/01.ss.0000128011.69526.e6

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QUANTIFICATION OF 14C-LABELED HYDROPHOBIC ORGANIC COMPOUNDS IN SOIL SAMPLES BY A SCINTILLATION FLUID EXTRACTION METHOD

Autor: Kaj Henriksen, Peter Roslev, Torben Olesen, Dennis E. Rolston, Martin Hesselsøe, Jesper Gamst, Per Moldrup

Publikováno v: Gamst, J, Hesselsøe, M, Roslev, P, Roslev, P, Møldrup, P, Henriksen, K & Henriksen, K 2002, ' Quantification of 14C-labeled hydrophobic organic compounds in soil samples by a scintillation fluid extraction method ', Soil Science, vol. 167, no. 1, pp. 25-34 .

Hydrophobic organic chemicals labeled with 14 C are often used as tracers to study chemical fate and transport in soil. Wet oxidation is the recognized but labor-demanding method used most often to measure the concentration of radioactive organic tra

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f7ba10c144b07400ed16a250db1fb45a
https://doi.org/10.1097/00010694-200201000-00003

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Nonsingularity of Naphthalene Sorption in Soil

Autor: Hubert de Jonge, Per Moldrup, Dennis E. Rolston, Torben Olesen, Jesper Gamst

Publikováno v: Soil Science Society of America Journal. 65:1622-1633

Realistic models for transport of organic chemicals in soil require accurate predictions of the adsorption-desorption kinetics. In this study, a physically based two-compartment one-rate (TCOR) sorption model was evaluated by comparison of model simu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ddbe17dc231ebf4fbfdc70a60e959c29
https://doi.org/10.2136/sssaj2001.1622

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Leaching of PAHs from hot mix asphalt pavements

Autor: Thomas Højlund Christensen, Jesper Gamst, Harpa Birgisdottir

Publikováno v: Birgisdottir, H, Gamst, J & Christensen, T H 2007, ' Leaching of PAHs from hot mix asphalt pavements ', Environmental Engineering Science, vol. 24, pp. 1409-1421 .

Asphalt has been widely used as the primary bound road construction material, both as road base material and wearing course. Polycyclic aromatic hydrocarbons (PAHs) have commonly been observed in soils near and under roads. However, the contribution

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b6eefb5028d2fd2dacefcdfd1faa32b0
https://vbn.aau.dk/da/publications/8668078e-18b4-4486-acc6-53560827b538

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Comparison of naphthalene diffusion and nonequilibrium adsorption-desorption experiments

Autor: Per Moldrup, Kate M. Scow, Dennis E. Rolston, Jesper Gamst, Toshiko Komatsu, Torben Olesen

Publikováno v: Gamst, J, Møldrup, P, Rolston, D E, Olesen, T, Scow, K & Komatsu, T 2003, ' Comparison of naphthalene diffusion and nonequilibrium adsorption-desorption experiments ', Soil Science Society of America Journal, vol. 67, no. 3, pp. 765-777 .

Diffusion of hydrophobic organic compounds (HOC) is a key process controlling transport of contaminants in soils. However, the separate effects of sorption and diffusion on net (effective) HOC diffusion are not fully understood. In this study, effect

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5cf345e217daf053c510629b92c19591
https://vbn.aau.dk/da/publications/e78b5c20-2429-11da-ad52-000ea68e967b

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Solute Diffusion and Adsorption in Six Soils Along a Soil Texture Gradient

Autor: Jesper Gamst, Torben Olesen, Per Moldrup

Publikováno v: Olesen, T, Møldrup, P & Gamst, J 1999, ' Solute Diffusion and Adsorption in Six Soils Along a Soil Texture Gradient ', Soil Science Society of America Journal, vol. 63, pp. 519-524 .

The Millington-Quirk (MQ) model is widely used to predict solute diffusivity (ratio of diffusion coefficients in soil and free water) in transport and fate models for nutrients and organic contaminants in soil. Recently, we suggested two soil-type de

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7c936a9dcc9de19ed4703e63b483c996
https://vbn.aau.dk/da/publications/8774fae0-8093-11db-8b97-000ea68e967b

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