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Urban storm water infiltration systems are not reliable sinks for biocides: evidence from column experiments

Groundwater quality in urban catchments is endangered by the input of biocides, such as those used in facade paints to suppress algae and fungal growth and washed off by heavy rainfall. Their retention in storm water infiltration systems (SIS) depends, in addition to their molecular properties, on c...

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Autores principales: Bork, Marcus, Lange, Jens, Graf-Rosenfellner, Markus, Hensen, Birte, Olsson, Oliver, Hartung, Thomas, Fernández-Pascual, Elena, Lang, Friederike
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8012575/
https://www.ncbi.nlm.nih.gov/pubmed/33790334
http://dx.doi.org/10.1038/s41598-021-86387-9
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author Bork, Marcus
Lange, Jens
Graf-Rosenfellner, Markus
Hensen, Birte
Olsson, Oliver
Hartung, Thomas
Fernández-Pascual, Elena
Lang, Friederike
author_facet Bork, Marcus
Lange, Jens
Graf-Rosenfellner, Markus
Hensen, Birte
Olsson, Oliver
Hartung, Thomas
Fernández-Pascual, Elena
Lang, Friederike
author_sort Bork, Marcus
collection PubMed
description Groundwater quality in urban catchments is endangered by the input of biocides, such as those used in facade paints to suppress algae and fungal growth and washed off by heavy rainfall. Their retention in storm water infiltration systems (SIS) depends, in addition to their molecular properties, on chemical properties and structure of the integrated soil layer. These soil properties change over time and thus possibly also the relevance of preferential flow paths, e.g. due to ongoing biological activity. To investigate the mobility of biocides in SIS, we analyzed the breakthrough of differently adsorbing tracers (bromide, uranine, sulforhodamine B) and commonly used biocides (diuron, terbutryn, octhilinone) in laboratory column experiments of undisturbed soil cores of SIS, covering ages from 3 to 18 years. Despite similar soil texture and chemical soil properties, retention of tracers and biocides differed distinctly between SIS. Tracer and biocide breakthrough ranged from 54% and 5%, to 96% and 54%, respectively. We related the reduced solute retention to preferential transport in macropores as could be confirmed by brilliant blue staining. Our results suggest an increasing risk of groundwater pollution with increasing number of macropores related to biological activity and the age of SIS.
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spelling pubmed-80125752021-04-01 Urban storm water infiltration systems are not reliable sinks for biocides: evidence from column experiments Bork, Marcus Lange, Jens Graf-Rosenfellner, Markus Hensen, Birte Olsson, Oliver Hartung, Thomas Fernández-Pascual, Elena Lang, Friederike Sci Rep Article Groundwater quality in urban catchments is endangered by the input of biocides, such as those used in facade paints to suppress algae and fungal growth and washed off by heavy rainfall. Their retention in storm water infiltration systems (SIS) depends, in addition to their molecular properties, on chemical properties and structure of the integrated soil layer. These soil properties change over time and thus possibly also the relevance of preferential flow paths, e.g. due to ongoing biological activity. To investigate the mobility of biocides in SIS, we analyzed the breakthrough of differently adsorbing tracers (bromide, uranine, sulforhodamine B) and commonly used biocides (diuron, terbutryn, octhilinone) in laboratory column experiments of undisturbed soil cores of SIS, covering ages from 3 to 18 years. Despite similar soil texture and chemical soil properties, retention of tracers and biocides differed distinctly between SIS. Tracer and biocide breakthrough ranged from 54% and 5%, to 96% and 54%, respectively. We related the reduced solute retention to preferential transport in macropores as could be confirmed by brilliant blue staining. Our results suggest an increasing risk of groundwater pollution with increasing number of macropores related to biological activity and the age of SIS. Nature Publishing Group UK 2021-03-31 /pmc/articles/PMC8012575/ /pubmed/33790334 http://dx.doi.org/10.1038/s41598-021-86387-9 Text en © The Author(s) 2021 Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Bork, Marcus
Lange, Jens
Graf-Rosenfellner, Markus
Hensen, Birte
Olsson, Oliver
Hartung, Thomas
Fernández-Pascual, Elena
Lang, Friederike
Urban storm water infiltration systems are not reliable sinks for biocides: evidence from column experiments
title Urban storm water infiltration systems are not reliable sinks for biocides: evidence from column experiments
title_full Urban storm water infiltration systems are not reliable sinks for biocides: evidence from column experiments
title_fullStr Urban storm water infiltration systems are not reliable sinks for biocides: evidence from column experiments
title_full_unstemmed Urban storm water infiltration systems are not reliable sinks for biocides: evidence from column experiments
title_short Urban storm water infiltration systems are not reliable sinks for biocides: evidence from column experiments
title_sort urban storm water infiltration systems are not reliable sinks for biocides: evidence from column experiments
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8012575/
https://www.ncbi.nlm.nih.gov/pubmed/33790334
http://dx.doi.org/10.1038/s41598-021-86387-9
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