Time-lapse 3D imaging by positron emission tomography of Cu mobilized in a soil column by the herbicide MCPA

Abstract Phenoxyalkanoic acids like the 4-chloro-2-methylphenoxyacetic acid (MCPA) are the second highest used xenobiotic herbicides worldwide after glyphosate because of their apparently favorable environmental properties. Experimental batch equilibration data suggested a reduced Cu adsorption effi...

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Autores principales:	Johannes Kulenkampff, Madeleine Stoll, Marion Gründig, Alexander Mansel, Johanna Lippmann-Pipke, Michael Kersten
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b804f5c6e9d944b794aeefe3fe125174
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spelling	oai:doaj.org-article:b804f5c6e9d944b794aeefe3fe1251742021-12-02T15:09:08ZTime-lapse 3D imaging by positron emission tomography of Cu mobilized in a soil column by the herbicide MCPA10.1038/s41598-018-25413-92045-2322https://doaj.org/article/b804f5c6e9d944b794aeefe3fe1251742018-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-25413-9https://doaj.org/toc/2045-2322Abstract Phenoxyalkanoic acids like the 4-chloro-2-methylphenoxyacetic acid (MCPA) are the second highest used xenobiotic herbicides worldwide after glyphosate because of their apparently favorable environmental properties. Experimental batch equilibration data suggested a reduced Cu adsorption efficiency with the soil mineral goethite below pH 6 in presence of MCPA. This has been verified by advanced surface complexation adsorption modelling involving dissolved Cu-MCPA complexation constants. Positron emission tomography is a non-invasive molecular imaging method for time-resolved three-dimensional information commonly applied on non-retarded tracers in soil core scale experiments. Mineral surface reactive tracers like Cu-64 are too immobile for the relatively short observation times available with this advanced imaging technique. However, Cu-64 radiolabeled Cu-MCPA complex migration could be observed in as long as 10-cm artificial soil test columns where break-through occurred within a few days. For the first time, time-lapse movies of Cu migration in the opaque soil columns were recorded using this novel reactive transport process tomography approach.Johannes KulenkampffMadeleine StollMarion GründigAlexander ManselJohanna Lippmann-PipkeMichael KerstenNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-9 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Johannes Kulenkampff Madeleine Stoll Marion Gründig Alexander Mansel Johanna Lippmann-Pipke Michael Kersten Time-lapse 3D imaging by positron emission tomography of Cu mobilized in a soil column by the herbicide MCPA
description	Abstract Phenoxyalkanoic acids like the 4-chloro-2-methylphenoxyacetic acid (MCPA) are the second highest used xenobiotic herbicides worldwide after glyphosate because of their apparently favorable environmental properties. Experimental batch equilibration data suggested a reduced Cu adsorption efficiency with the soil mineral goethite below pH 6 in presence of MCPA. This has been verified by advanced surface complexation adsorption modelling involving dissolved Cu-MCPA complexation constants. Positron emission tomography is a non-invasive molecular imaging method for time-resolved three-dimensional information commonly applied on non-retarded tracers in soil core scale experiments. Mineral surface reactive tracers like Cu-64 are too immobile for the relatively short observation times available with this advanced imaging technique. However, Cu-64 radiolabeled Cu-MCPA complex migration could be observed in as long as 10-cm artificial soil test columns where break-through occurred within a few days. For the first time, time-lapse movies of Cu migration in the opaque soil columns were recorded using this novel reactive transport process tomography approach.
format	article
author	Johannes Kulenkampff Madeleine Stoll Marion Gründig Alexander Mansel Johanna Lippmann-Pipke Michael Kersten
author_facet	Johannes Kulenkampff Madeleine Stoll Marion Gründig Alexander Mansel Johanna Lippmann-Pipke Michael Kersten
author_sort	Johannes Kulenkampff
title	Time-lapse 3D imaging by positron emission tomography of Cu mobilized in a soil column by the herbicide MCPA
title_short	Time-lapse 3D imaging by positron emission tomography of Cu mobilized in a soil column by the herbicide MCPA
title_full	Time-lapse 3D imaging by positron emission tomography of Cu mobilized in a soil column by the herbicide MCPA
title_fullStr	Time-lapse 3D imaging by positron emission tomography of Cu mobilized in a soil column by the herbicide MCPA
title_full_unstemmed	Time-lapse 3D imaging by positron emission tomography of Cu mobilized in a soil column by the herbicide MCPA
title_sort	time-lapse 3d imaging by positron emission tomography of cu mobilized in a soil column by the herbicide mcpa
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/b804f5c6e9d944b794aeefe3fe125174
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Time-lapse 3D imaging by positron emission tomography of Cu mobilized in a soil column by the herbicide MCPA

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