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

Abstract 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 propert...

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Autores principales:	Marcus Bork, Jens Lange, Markus Graf-Rosenfellner, Birte Hensen, Oliver Olsson, Thomas Hartung, Elena Fernández-Pascual, Friederike Lang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c721a520f2fd4671a7cc340deede4b5b
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spelling	oai:doaj.org-article:c721a520f2fd4671a7cc340deede4b5b2021-12-02T13:27:08ZUrban storm water infiltration systems are not reliable sinks for biocides: evidence from column experiments10.1038/s41598-021-86387-92045-2322https://doaj.org/article/c721a520f2fd4671a7cc340deede4b5b2021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-86387-9https://doaj.org/toc/2045-2322Abstract 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.Marcus BorkJens LangeMarkus Graf-RosenfellnerBirte HensenOliver OlssonThomas HartungElena Fernández-PascualFriederike LangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Marcus Bork Jens Lange Markus Graf-Rosenfellner Birte Hensen Oliver Olsson Thomas Hartung Elena Fernández-Pascual Friederike Lang Urban storm water infiltration systems are not reliable sinks for biocides: evidence from column experiments
description	Abstract 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.
format	article
author	Marcus Bork Jens Lange Markus Graf-Rosenfellner Birte Hensen Oliver Olsson Thomas Hartung Elena Fernández-Pascual Friederike Lang
author_facet	Marcus Bork Jens Lange Markus Graf-Rosenfellner Birte Hensen Oliver Olsson Thomas Hartung Elena Fernández-Pascual Friederike Lang
author_sort	Marcus Bork
title	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_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_sort	urban storm water infiltration systems are not reliable sinks for biocides: evidence from column experiments
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/c721a520f2fd4671a7cc340deede4b5b
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Urban storm water infiltration systems are not reliable sinks for biocides: evidence from column experiments

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