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Duarte DJ, Zillien C, Kox M, Oldenkamp R, van der Zaan B, Roex E, Ragas AMJ. Characterization of urban sources of antibiotics and antibiotic-resistance genes in a Dutch sewer catchment. Sci Total Environ 2023; 905:167439. [PMID: 37774886 DOI: 10.1016/j.scitotenv.2023.167439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 09/08/2023] [Accepted: 09/26/2023] [Indexed: 10/01/2023]
Abstract
A one year study was conducted in the city of Nijmegen, The Netherlands, to characterize various urban sources of antibiotics and antibiotic resistant genes (ARGs) in wastewater within a single sewer catchment. Prevalence of ermB, tet(W), sul1, sul2, intl1, and 16S rRNA gene was determined at 10 locations within the city. Sampling locations included a nursing home, a student residence, a hospital and an industrial area, among others. Wastewater concentrations of 23 antibiotics were measured using passive sampling. Additionally, excreted loads of 22 antibiotics were estimated based on ambulatory prescription and clinical usage data. Genes sul1 and intl1 were most abundant across most locations. Ciprofloxacin and amoxicillin together contributed over 92 % of the total estimated antibiotic selective pressure at all sampling points. The present study highlights the prominent role that hospitals can have in the prevalence and proliferation of ARGs in urban wastewater. Furthermore, results suggest that even short-term changes in the therapeutic regimen prescribed in hospitals may translate into shifting ARG abundance patterns in hospital wastewater. The methods applied present an opportunity to identify emission hotspots and prioritize intervention options to limit ARG spread from urban wastewater to the environment.
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Affiliation(s)
- Daniel J Duarte
- Radboud University Nijmegen, Radboud Institute for Biological and Environmental Sciences, Department of Environmental Science, 6500 GL Nijmegen, Netherlands
| | - Caterina Zillien
- Radboud University Nijmegen, Radboud Institute for Biological and Environmental Sciences, Department of Environmental Science, 6500 GL Nijmegen, Netherlands.
| | - Martine Kox
- Deltares, Subsurface and Groundwater Systems, Daltonlaan 600, 3584 KB Utrecht, the Netherlands
| | - Rik Oldenkamp
- Department of Global Health-Amsterdam Institute for Global Health and Development, Amsterdam UMC, University of Amsterdam, Paasheuvelweg 25, 1105 BP Amsterdam, the Netherlands
| | - Bas van der Zaan
- Deltares, Subsurface and Groundwater Systems, Daltonlaan 600, 3584 KB Utrecht, the Netherlands
| | - Erwin Roex
- National Institute for Public Health and the Environment (RIVM), Centre for Zoonoses and Environmental Microbiology, 3721 MA Bilthoven, the Netherlands
| | - Ad M J Ragas
- Radboud University Nijmegen, Radboud Institute for Biological and Environmental Sciences, Department of Environmental Science, 6500 GL Nijmegen, Netherlands
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Kianfar B, Tian J, Rozemeijer J, van der Zaan B, Bogaard TA, Foppen JW. Transport characteristics of DNA-tagged silica colloids as a colloidal tracer in saturated sand columns; role of solution chemistry, flow velocity, and sand grain size. J Contam Hydrol 2022; 246:103954. [PMID: 35114497 DOI: 10.1016/j.jconhyd.2022.103954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 12/23/2021] [Accepted: 01/01/2022] [Indexed: 06/14/2023]
Abstract
In recent years, DNA-tagged silica colloids have been used as an environmental tracer. A major advantage of this technique is that the DNA-coding provides an unlimited number of unique tracers without a background concentration. However, little is known about the effects of physio-chemical subsurface properties on the transport behavior of DNA-tagged silica tracers. We are the first to explore the deposition kinetics of this new DNA-tagged silica tracer for different pore water chemistries, flow rates, and sand grain size distributions in a series of saturated sand column experiments in order to predict environmental conditions for which the DNA-tagged silica tracer can best be employed. Our results indicated that the transport of DNA-tagged silica tracer can be well described by first order kinetic attachment and detachment. Because of massive re-entrainment under transient chemistry conditions, we inferred that attachment was primarily in the secondary energy minimum. Based on calculated sticking efficiencies of the DNA-tagged silica tracer to the sand grains, we concluded that a large fraction of the DNA-tagged silica tracer colliding with the sand grain surface did also stick to that surface, when the ionic strength of the system was higher. The experimental results revealed the sensitivity of DNA-tagged silica tracer to both physical and chemical factors. This reduces its applicability as a conservative hydrological tracer for studying subsurface flow paths. Based on our experiments, the DNA-tagged silica tracer is best applicable for studying flow routes and travel times in coarse grained aquifers, with a relatively high flow rate. DNA-tagged silica tracers may also be applied for simulating the transport of engineered or biological colloidal pollution, such as microplastics and pathogens.
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Affiliation(s)
- Bahareh Kianfar
- Department of Water Management, Faculty of Civil Engineering and Geosciences, Delft University of Technology, Delft, the Netherlands.
| | - Jingya Tian
- Department of Water Resources and Ecosystems, IHE-Delft Institute for Water Education, Delft, the Netherlands
| | | | | | - Thom A Bogaard
- Department of Water Management, Faculty of Civil Engineering and Geosciences, Delft University of Technology, Delft, the Netherlands
| | - Jan Willem Foppen
- Department of Water Management, Faculty of Civil Engineering and Geosciences, Delft University of Technology, Delft, the Netherlands; Department of Water Resources and Ecosystems, IHE-Delft Institute for Water Education, Delft, the Netherlands.
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Tomazini R, Grosseli GM, Nara Ribeiro de Sousa D, Fadini PS, Talarico Saia F, Langenhoff A, van der Zaan B, Mozeto AA. Development of a simple method to quantify fipronil and its intermediates in soil. Anal Methods 2020; 12:3242-3249. [PMID: 32930187 DOI: 10.1039/d0ay00924e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A simple and reproducible method was developed and validated for simultaneous quantification of the pesticide fipronil and its intermediates fipronil desulfinyl, fipronil sulfone and fipronil sulfide, in soil. The analytes were extracted by ultrasonic bath and the ratio of solvents (hexane/acetone), number and time of cycles were optimized by Box-Behnken design with a triplicate central point. The optimal extraction conditions were achieved through a response surface analysis. The clean-up step was conducted by cartridges of solid phase extraction (SPE) containing silica (Florisil®) and aluminum oxide. Gas chromatography with electron capture detection (GC-ECD) was employed for separating fipronil and its intermediates with a suitable resolution and runtime of 20 minutes. The best quantification was achieved with 1 : 1 (v/v) acetone/hexane and 2 ultrasound cycles of 15 minutes each. The recovery values were between 81 to 108%, with relative standard deviation (RSD) lower than 6%, with no effect of the used matrix. Analytical curves presented regression coefficients values above 0.9908 for a concentration range from 0.005 to 0.6 μg g-1. Limits of detection (LOD) from 0.002 to 0.006 μg g-1 and limits of quantification (LOQ) from 0.006 to 0.020 μg g-1 were reached for all analytes. This method can be used to monitor and quantify fipronil and its intermediates in soil.
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Affiliation(s)
- Rafaella Tomazini
- Laboratory of Environmental Biogeochemistry, Nucleus of Diagnoses and Environmental Interventions, Department of Chemistry, Federal University of São Carlos - UFSCar, Via Washington Luís km 235, São Carlos 13565-905, SP, Brazil.
| | - Guilherme Martins Grosseli
- Laboratory of Environmental Biogeochemistry, Nucleus of Diagnoses and Environmental Interventions, Department of Chemistry, Federal University of São Carlos - UFSCar, Via Washington Luís km 235, São Carlos 13565-905, SP, Brazil.
| | - Diana Nara Ribeiro de Sousa
- Laboratory of Environmental Biogeochemistry, Nucleus of Diagnoses and Environmental Interventions, Department of Chemistry, Federal University of São Carlos - UFSCar, Via Washington Luís km 235, São Carlos 13565-905, SP, Brazil.
| | - Pedro Sergio Fadini
- Laboratory of Environmental Biogeochemistry, Nucleus of Diagnoses and Environmental Interventions, Department of Chemistry, Federal University of São Carlos - UFSCar, Via Washington Luís km 235, São Carlos 13565-905, SP, Brazil.
| | - Flávia Talarico Saia
- Institute of Marine Sciences, Federal University of São Paulo, Av. Dr Carvalho de Mendonça, 144, Encruzilhada, 11070-102, Santos, SP, Brazil.
| | - Alette Langenhoff
- Department of Environmental Technology, Wageningen University & Research, PO Box 17, 6700 EV Wageningen, The Netherlands.
| | - Bas van der Zaan
- Subsurface and Groundwater Systems Deltares, PO Box 85467, 3508 AL, Utrecht, The Netherlands.
| | - Antonio Aparecido Mozeto
- Laboratory of Environmental Biogeochemistry, Nucleus of Diagnoses and Environmental Interventions, Department of Chemistry, Federal University of São Carlos - UFSCar, Via Washington Luís km 235, São Carlos 13565-905, SP, Brazil.
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van der Zaan B, de Weert J, Rijnaarts H, de Vos WM, Smidt H, Gerritse J. Degradation of 1,2-dichloroethane by microbial communities from river sediment at various redox conditions. Water Res 2009; 43:3207-3216. [PMID: 19501382 DOI: 10.1016/j.watres.2009.04.042] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2009] [Revised: 04/20/2009] [Accepted: 04/22/2009] [Indexed: 05/27/2023]
Abstract
Insight into the pathways of biodegradation and external factors controlling their activity is essential in adequate environmental risk assessment of chlorinated aliphatic hydrocarbon pollution. This study focuses on biodegradation of 1,2-dichloroethane (1,2-DCA) in microcosms containing sediment sourced from the European rivers Ebro, Elbe and Danube. Biodegradation was studied under different redox conditions. Reductive dechlorination of 1,2-DCA was observed with Ebro and Danube sediment with chloroethane, or ethene, respectively, as the major dechlorination products. Different reductively dehalogenating micro-organisms (Dehalococcoides spp., Dehalobacter spp., Desulfitobacterium spp. and Sulfurospirillum spp.) were detected by 16S ribosomal RNA gene-targeted PCR and sequence analyses of 16S rRNA gene clone libraries showed that only 2-5 bacterial orders were represented in the microcosms. With Ebro and Danube sediment, indications for anaerobic oxidation of 1,2-DCA were obtained under denitrifying or iron-reducing conditions. No biodegradation of 1,2-DCA was observed in microcosms with Ebro sediment under the different tested redox conditions. This research shows that 1,2-DCA biodegradation capacity was present in different river sediments, but not in the water phase of the river systems and that biodegradation potential with associated microbial communities in river sediments varies with the geochemical properties of the sediments.
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Affiliation(s)
- Bas van der Zaan
- Soil and Ground Water Systems, TNO Built Environment and Geosciences, Princetonlaan 6, 3584 CB Utrecht, the Netherlands.
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