Entry of biocides and their transformation products into groundwater via urban stormwater infiltration systems

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Entry of biocides and their transformation products into groundwater via urban stormwater infiltration systems. / Hensen, Birte; Lange, Jens; Jackisch, Nicole et al.
In: Water Research, Vol. 144, 01.11.2018, p. 413-423.

Research output: Journal contributionsJournal articlesResearchpeer-review

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@article{9d90b9ca035c458ca70319abe3cbb1f0,
title = "Entry of biocides and their transformation products into groundwater via urban stormwater infiltration systems",
abstract = "Biocides are, inter alia, applied as preservatives on facades to prevent the growth of microorganisms. Their incomplete mineralization results in new compounds, so-called transformation products (TPs). Rain causes that both applied biocides and their TPs leach from facades with stormwater into the urban aquatic environment. This study is the first to investigate the introduction of the biocides Diuron, Terbutryn, and Octylisothiazolinone (OIT) and their TPs into the groundwater via urban stormwater infiltration systems. In this study, the TPs of these biocides were created by laboratory photolysis and elucidated using LC-HRMS. The results were then used to analyze TPs by LC-MS/MS in stormwater and groundwater samples, which were taken from an urban swale-trench system and from groundwater wells upgradient and downgradient of the infiltration system. A sprinkling experiment was conducted to evaluate facades as a contamination source. Biodegradation tests were conducted to determine bio-persistence of biocides and their TPs. Fourteen TPs were identified under laboratory photolysis. TP-186, TP-210, and TP-256 of Terbutryn were hitherto unknown. Nine TPs were qualitatively detected in environmental water samples. Parent compounds, TP-219 of Diuron and TP-212, TP-214, and TP-226 of Terbutryn were detected at a maximum concentration of 140 ng L−1 during stormwater events. Concentrations in groundwater were considerably below German drinking water limits, but were higher in groundwater samples downgradient from the investigated swale-trench system than in those collected upgradient. Neither the biocides nor most of their TPs were readily biodegradable under simulated surface water conditions. The results show that entry of biocides and their TPs into groundwater is caused by infiltration of urban stormwater.",
keywords = "Facade coatings, Groundwater contamination, Leaching, Qualitative TP-screening, Stormwater events, Chemistry",
author = "Birte Hensen and Jens Lange and Nicole Jackisch and Franziska Zieger and Oliver Olsson and Klaus K{\"u}mmerer",
note = "The authors thank Jens Robertson and Philipp Knobloch for their extensive support in the laboratory analysis. This research was funded by the Federal Ministry of Education and Research (BMBF) ( 02WRM1366A ) support measure “Regional water resource management (ReWaM)” in the project MUTReWa (Measures for a sustainable approach to pesticides and their transformation products in the regional water management). Appendix A",
year = "2018",
month = nov,
day = "1",
doi = "10.1016/j.watres.2018.07.046",
language = "English",
volume = "144",
pages = "413--423",
journal = "Water Research",
issn = "0043-1354",
publisher = "Elsevier Ltd",

}

RIS

TY - JOUR

T1 - Entry of biocides and their transformation products into groundwater via urban stormwater infiltration systems

AU - Hensen, Birte

AU - Lange, Jens

AU - Jackisch, Nicole

AU - Zieger, Franziska

AU - Olsson, Oliver

AU - Kümmerer, Klaus

N1 - The authors thank Jens Robertson and Philipp Knobloch for their extensive support in the laboratory analysis. This research was funded by the Federal Ministry of Education and Research (BMBF) ( 02WRM1366A ) support measure “Regional water resource management (ReWaM)” in the project MUTReWa (Measures for a sustainable approach to pesticides and their transformation products in the regional water management). Appendix A

PY - 2018/11/1

Y1 - 2018/11/1

N2 - Biocides are, inter alia, applied as preservatives on facades to prevent the growth of microorganisms. Their incomplete mineralization results in new compounds, so-called transformation products (TPs). Rain causes that both applied biocides and their TPs leach from facades with stormwater into the urban aquatic environment. This study is the first to investigate the introduction of the biocides Diuron, Terbutryn, and Octylisothiazolinone (OIT) and their TPs into the groundwater via urban stormwater infiltration systems. In this study, the TPs of these biocides were created by laboratory photolysis and elucidated using LC-HRMS. The results were then used to analyze TPs by LC-MS/MS in stormwater and groundwater samples, which were taken from an urban swale-trench system and from groundwater wells upgradient and downgradient of the infiltration system. A sprinkling experiment was conducted to evaluate facades as a contamination source. Biodegradation tests were conducted to determine bio-persistence of biocides and their TPs. Fourteen TPs were identified under laboratory photolysis. TP-186, TP-210, and TP-256 of Terbutryn were hitherto unknown. Nine TPs were qualitatively detected in environmental water samples. Parent compounds, TP-219 of Diuron and TP-212, TP-214, and TP-226 of Terbutryn were detected at a maximum concentration of 140 ng L−1 during stormwater events. Concentrations in groundwater were considerably below German drinking water limits, but were higher in groundwater samples downgradient from the investigated swale-trench system than in those collected upgradient. Neither the biocides nor most of their TPs were readily biodegradable under simulated surface water conditions. The results show that entry of biocides and their TPs into groundwater is caused by infiltration of urban stormwater.

AB - Biocides are, inter alia, applied as preservatives on facades to prevent the growth of microorganisms. Their incomplete mineralization results in new compounds, so-called transformation products (TPs). Rain causes that both applied biocides and their TPs leach from facades with stormwater into the urban aquatic environment. This study is the first to investigate the introduction of the biocides Diuron, Terbutryn, and Octylisothiazolinone (OIT) and their TPs into the groundwater via urban stormwater infiltration systems. In this study, the TPs of these biocides were created by laboratory photolysis and elucidated using LC-HRMS. The results were then used to analyze TPs by LC-MS/MS in stormwater and groundwater samples, which were taken from an urban swale-trench system and from groundwater wells upgradient and downgradient of the infiltration system. A sprinkling experiment was conducted to evaluate facades as a contamination source. Biodegradation tests were conducted to determine bio-persistence of biocides and their TPs. Fourteen TPs were identified under laboratory photolysis. TP-186, TP-210, and TP-256 of Terbutryn were hitherto unknown. Nine TPs were qualitatively detected in environmental water samples. Parent compounds, TP-219 of Diuron and TP-212, TP-214, and TP-226 of Terbutryn were detected at a maximum concentration of 140 ng L−1 during stormwater events. Concentrations in groundwater were considerably below German drinking water limits, but were higher in groundwater samples downgradient from the investigated swale-trench system than in those collected upgradient. Neither the biocides nor most of their TPs were readily biodegradable under simulated surface water conditions. The results show that entry of biocides and their TPs into groundwater is caused by infiltration of urban stormwater.

KW - Facade coatings

KW - Groundwater contamination

KW - Leaching

KW - Qualitative TP-screening

KW - Stormwater events

KW - Chemistry

UR - http://www.scopus.com/inward/record.url?scp=85050572105&partnerID=8YFLogxK

U2 - 10.1016/j.watres.2018.07.046

DO - 10.1016/j.watres.2018.07.046

M3 - Journal articles

C2 - 30059904

AN - SCOPUS:85050572105

VL - 144

SP - 413

EP - 423

JO - Water Research

JF - Water Research

SN - 0043-1354

ER -

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