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Kodranov ID, Pergal MV, Avdin VV, Manojlović DD. Examination of degradation and ecotoxicology of pethoxamid and metazachlor after chlorine dioxide treatment. ENVIRONMENTAL MONITORING AND ASSESSMENT 2020; 192:422. [PMID: 32519186 DOI: 10.1007/s10661-020-08392-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Accepted: 05/28/2020] [Indexed: 06/11/2023]
Abstract
Chlorine dioxide has been reported as very efficiently removing pesticides and other organic compounds from water matrixes. Due to pesticide toxicity and potential toxicity of their degradation products, it is important to monitor these compounds as environmental pollutants in ground and surface waters. Evaluating the effects of chlorine dioxide treatment is necessary, and toxicity studies are used to ascertain the severity of effects of intermediates due to incomplete degradation of the parent compounds. In this paper, for the first time, chlorine dioxide is applied and evaluated for the removal of chloroacetamide herbicides (pethoxamid and metazachlor) from waters (deionized water and Sava River water). The degradation degree of herbicides was measured by high-performance liquid chromatography, the main degradation products were identified using gas chromatography with a triple quadrupole mass detector, and the degree of mineralization was monitored by total organic carbon analysis. Four and two degradation products were identified after pethoxamid and metazachlor degradation, respectively. Total organic carbon analysis showed mineralization occurred, but it was incomplete. The mineralization and the characteristics of the degradation products obtained were tested using Daphnia magna and showed lower toxicity than the parent herbicides. The advantage of the applied treatment was a very high degradation percentage for pethoxamid removal from deionized water and Sava River water (100% and 97%, respectively), with higher mineralization efficiency (65%) than metazachlor. Slightly lower degradation efficiency in the Sava River water was due to chlorine dioxide oxidizing the herbicides and dissolved organic matter simultaneously.
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Affiliation(s)
- Igor D Kodranov
- Faculty of Chemistry, University of Belgrade, Studentski Trg 12-16, Belgrade, 11000, Serbia
| | - Marija V Pergal
- Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Njegoševa 12, Belgrade, 11000, Serbia.
| | - Viacheslav V Avdin
- South Ural State University, Lenin Prospekt 76, Chelyabinsk, Russia, 454080
| | - Dragan D Manojlović
- Faculty of Chemistry, University of Belgrade, Studentski Trg 12-16, Belgrade, 11000, Serbia
- South Ural State University, Lenin Prospekt 76, Chelyabinsk, Russia, 454080
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52
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Svendsen SB, Carvalho PN, Bollmann UE, Ellegaard-Jensen L, Albers CN, Strobel BW, Jacobsen CS, Bester K. A comparison of the fate of diflufenican in agricultural sandy soil and gravel used in urban areas. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 715:136803. [PMID: 32069738 DOI: 10.1016/j.scitotenv.2020.136803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 12/18/2019] [Accepted: 01/17/2020] [Indexed: 06/10/2023]
Abstract
Diflufenican is used in both agricultural and urban areas to control weeds. However, in Europe pesticides are regulated using agricultural soil data only. Urban soils where the top layer is replaced by gravel (e.g. driveways, outdoor tiled areas) can evidently differ from agricultural soils in many biotic and physical properties. In the present study, we compared the degradation, mineralization, sorption and aging of diflufenican between an agricultural sandy soil to a gravel used in urban areas. Both diflufenican and its two main aerobic metabolites were investigated. Diflufenican and the metabolites degraded slower in gravel than in agricultural soil. One of the metabolites, 2-[3-(Trifluoromethyl)phenoxy]nicotinic acid (AE B107137 as identified by EFSA; further abbreviated as AE-B), was formed from the incubation of diflufenican in both soil and gravel, however, showing different formation patterns in the two materials: No accumulation of AE-B was determined in the soil, whereas in gravel, an accumulation of AE-B was determined over the full study period of 150 days. After 150 days, approximately 10% of the applied diflufenican was mineralised in the soil (cumulative), while it was not mineralised in the gravel. Diflufenican showed much stronger sorption to the soil than to the gravel, while the sorption of the metabolites was weaker than diflufenican in both soil and gravel. Within the experimental period, the influence of aging on the fate of diflufenican in soil and gravel is limited (<0.9 and <1.4%, respectively) when compared to the amount of compound still present in the soil. Overall, the results imply shortcomings in the risk assessment procedures requested for the registration of pesticides for urban areas.
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Affiliation(s)
- Sif B Svendsen
- Department of Environmental Science, Aarhus University, Frederiksborgsvej 399, Roskilde 4000, Denmark
| | - Pedro N Carvalho
- Department of Environmental Science, Aarhus University, Frederiksborgsvej 399, Roskilde 4000, Denmark
| | - Ulla E Bollmann
- Department of Environmental Science, Aarhus University, Frederiksborgsvej 399, Roskilde 4000, Denmark
| | - Lea Ellegaard-Jensen
- Department of Environmental Science, Aarhus University, Frederiksborgsvej 399, Roskilde 4000, Denmark
| | - Christian N Albers
- Department of Geochemistry, Geological Survey of Denmark and Greenland, Øster Voldgade 10, 1350 København K, Denmark
| | - Bjarne W Strobel
- Department of Plant and Environmental Science, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg 1871, Denmark
| | - Carsten S Jacobsen
- Department of Environmental Science, Aarhus University, Frederiksborgsvej 399, Roskilde 4000, Denmark
| | - Kai Bester
- Department of Environmental Science, Aarhus University, Frederiksborgsvej 399, Roskilde 4000, Denmark.
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53
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Lei W, Tang X, Zhou X. Biochar amendment effectively reduces the transport of 3,5,6-trichloro-2-pyridinol (a main degradation product of chlorpyrifos) in purple soil: Experimental and modeling. CHEMOSPHERE 2020; 245:125651. [PMID: 31881382 DOI: 10.1016/j.chemosphere.2019.125651] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 11/23/2019] [Accepted: 12/11/2019] [Indexed: 06/10/2023]
Abstract
This study investigates biochar amendment effectively reduces the transport of polar pollutant 3,5,6-trichloro-2-pyridinol, TCP, a main degradation product of chlorpyrifos, and quantitatively explores the physical and chemical mechanisms through inversion simulation. Thus, five biochar addition rates to soil, 0.0%, 0.5%, 1.0%, 2.5% and 5.0%, are tested and compared. The adsorption isotherms experiment, breakthrough curves, BTCs, in both repacked and undisturbed soil columns are also compared. And finally the non-equilibrium convection-diffusion equation, CDE, is used to uncover the change of hydraulic properties of soil and mass non-equilibrium of TCP in the soils mixed with different contents of biochar. The results show that the addition of biochar can reduce the transportation of TCP significantly in the purple soil with macro pores, and the reduction is mainly attributed to two aspects: increase of adsorption ability and decrease of diffusion coefficient and convection velocity. The former is reflected by the linear increase of Kd value with the increase of biochar addition rate and soil organic matter content. The latter is demonstrated by the dramatic reduction of TCP concentration in outflow of BTC experiment and the delayed leaching time. The inversely simulated results also reveal that the diffusion coefficient decrease from 5.35 to 3.95 when biochar addition rate increases from 0 to 5%. Compared with the repacked soil columns, the preferential flow does not disappear in the undisturbed soil columns, accompanied by a higher maximum concentration, an earlier equilibrium time and a less residual amount.
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Affiliation(s)
- Wenjuan Lei
- College of Tea Science, Guizhou University, Guiyang, 550025, China; College of Architecture & Environment, Sichuan University, Chengdu, 610065, China
| | - Xiangyu Tang
- Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610041, China.
| | - Xiangyang Zhou
- College of Resources and Environmental Engineering, Guizhou University, Guiyang, 550025, China
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54
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Ji C, Song Q, Chen Y, Zhou Z, Wang P, Liu J, Sun Z, Zhao M. The potential endocrine disruption of pesticide transformation products (TPs): The blind spot of pesticide risk assessment. ENVIRONMENT INTERNATIONAL 2020; 137:105490. [PMID: 32007685 DOI: 10.1016/j.envint.2020.105490] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 01/08/2020] [Accepted: 01/13/2020] [Indexed: 06/10/2023]
Abstract
The ecological and health risk assessment of environmental pesticide residues have attracted ever-growing attention; however, their transformation products (TPs) have seldom been considered. Herein, we examined the endocrine-disrupting effects of 4 widely used pesticides as pyriproxyfen (Pyr), malathion (ML), benalaxyl (BX), and fenoxaprop-ethyl (FE), together with their 21 TPs through in vitro and in silico approaches, and found approximately 50% of the TPs exhibited stronger endocrine-disrupting effects than their corresponding parent compounds. Specifically, Pyr and 9 TPs (five TPs of Pyr, one of ML, one of BX, and two of FE) exhibited estrogen-disrupting effects, which were also confirmed by results of E-screen and pS2 expression assays, and molecular docking showed that certain hydroxylated TPs could well mimic the binding mode of estrogen with ERα. Meanwhile, two TPs of Pyr, ML and its TP demonstrated weak glucocorticoid antagonistic activities partially contributed by hydrogen bonds. We also discovered that in H295R cells, all the endocrine disruptors increased hormone secretion and the related gene expression levels. Conclusively, since an increasing number of pesticide TPs have been being detected in various environmental media, a more comprehensive understanding of the ecological risk of pesticide TPs is imperative for risk assessments more extensively and regulatory policy-making on pesticide restriction in the future.
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Affiliation(s)
- Chenyang Ji
- College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China
| | - Qin Song
- College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China
| | - Yuanchen Chen
- College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China
| | - Zhiqiang Zhou
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Peng Wang
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Jing Liu
- College of Environment & Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Zhe Sun
- Cardiovascular Epidemiology Unit, Department of Public Health and Primary Care, University of Cambridge, Cambridge CB1 8RN, UK
| | - Meirong Zhao
- College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China.
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55
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Hensen B, Olsson O, Kümmerer K. A strategy for an initial assessment of the ecotoxicological effects of transformation products of pesticides in aquatic systems following a tiered approach. ENVIRONMENT INTERNATIONAL 2020; 137:105533. [PMID: 32113087 DOI: 10.1016/j.envint.2020.105533] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 01/03/2020] [Accepted: 01/26/2020] [Indexed: 06/10/2023]
Abstract
In order to conduct a fast and comprehensive toxicity screening of pesticide transformation products (TPs), this study used a tiered approach by a combination of in silico and experimental methods to determine the probability to be of relevance for risk assessment. The six pesticides Boscalid, Penconazole, Diuron, Terbutryn, Octhilinone (OIT), and Mecoprop were used as model compounds. Identification of corresponding environmental known and unknown TPs were done by literature analysis and photolysis experiments in combination. Aquatic solutions of the pesticides were photolysed to generate TPs which can be expected in the aquatic environment. The resulting mixtures were screened for TPs by high resolution LC-MS/MS. The herein developed approach was conducted at three different tiers: Literature review and in silico methods were used to predict exemplary the environmental bacterial toxicity and the genotoxicity of every single TP at tier I. In case of indications to be toxic, experiments at tier II were applied. Hereby, the photolytic mixtures containing parent compound and TPs were used for the consecutive toxicity test. Microtox assay for the parent compounds and the photolytic mixture was conducted to determine the acute and chronic toxicity and the growth inhibition of V. fischeri. Umu-tests were conducted to determine primary DNA damage. At tier III, single substance standards were used to conduct toxicity tests in case of toxic indication by previous tiers and availability of analytical standard. Identification of TPs revealed 45 known environmental TPs that originated from the six pesticides. The number of substances that need to be assessed was therefore more than sevenfold. By the tiered approach, it was possible to assess toxicological effects on environmental bacteria of 94% of the selected TPs. For 20% we found strong evidence to be toxic to environmental bacteria, as they were assessed at least at two tiers. For further 44% of the TPs we found slight evidence, as they could be assessed at one tier. Contrary, this approach turned out to be unsuitable to assess genotoxic effects of TPs neither by in silico tools nor by experiments. The number of substances that could probably pose a risk onto environment was quadrupled in comparison to the consideration of solely the parent compounds. Thus, this study demonstrates that the conducted screening approach allows for easy and fast identification of environmental relevant TPs. However, the study presented was a very first screening. Its applicability domain needs to be assessed further. For this purpose as a very next step the approach suggested here should be verified by applying additional endpoints and including additional parent compounds.
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Affiliation(s)
- Birte Hensen
- Institute of Sustainable and Environmental Chemistry, Leuphana University of Lüneburg, Universitätsallee 1, 21335 Lüneburg, Germany.
| | - Oliver Olsson
- Institute of Sustainable and Environmental Chemistry, Leuphana University of Lüneburg, Universitätsallee 1, 21335 Lüneburg, Germany.
| | - Klaus Kümmerer
- Institute of Sustainable and Environmental Chemistry, Leuphana University of Lüneburg, Universitätsallee 1, 21335 Lüneburg, Germany
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56
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Paijens C, Bressy A, Frère B, Moilleron R. Biocide emissions from building materials during wet weather: identification of substances, mechanism of release and transfer to the aquatic environment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:3768-3791. [PMID: 31656996 DOI: 10.1007/s11356-019-06608-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 09/24/2019] [Indexed: 05/14/2023]
Abstract
Biocides are added to or applied on building materials to prevent microorganisms from growing on their surface or to treat them. They are leached into building runoff and contribute to diffuse contamination of receiving waters. This review aimed at summarizing the current state of knowledge concerning the impact of biocides from buildings on the aquatic environment. The objectives were (i) to assess the key parameters influencing the leaching of biocides and to quantify their emission from buildings, (ii) to determine the different pathways from urban sources into receiving waters and (iii) to assess the associated environmental risk. Based on consumption data and leaching studies, a list of substances to monitor in receiving water was established. Literature review of their concentrations in the urban water cycle showed evidences of contamination and risk for aquatic life, which should put them into consideration for inclusion to European or international monitoring programs. However, some biocide concentration data in urban and receiving waters is still missing to fully assess their environmental risk, especially for isothiazolinones, iodopropynyl carbamate, zinc pyrithione and quaternary ammonium compounds, and little is known about their transformation products. Although some models supported by actual data were developed to extrapolate emissions on larger scales (watershed or city scales), they are not sufficient to prioritize the pathways of biocides from urban sources into receiving waters during both dry and wet weathers. Our review highlights the need to reduce emissions and limit their transfer into rivers and reports several solutions to address these issues.
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Affiliation(s)
- Claudia Paijens
- Leesu, UMR-MA-102, Ecole des Ponts ParisTech, Université Paris-Est Créteil, AgroParisTech, 6 et 8 avenue Blaise Pascal - Cité Descartes, 77455, Champs-sur-Marne Cedex 2, France
- Laboratoire Central de la Préfecture de Police, 39 bis rue de Dantzig, 75015, Paris, France
| | - Adèle Bressy
- Leesu, UMR-MA-102, Ecole des Ponts ParisTech, Université Paris-Est Créteil, AgroParisTech, 6 et 8 avenue Blaise Pascal - Cité Descartes, 77455, Champs-sur-Marne Cedex 2, France.
| | - Bertrand Frère
- Laboratoire Central de la Préfecture de Police, 39 bis rue de Dantzig, 75015, Paris, France
| | - Régis Moilleron
- Leesu, UMR-MA-102, Université Paris-Est Créteil, Ecole des Ponts ParisTech, AgroParisTech, 61 avenue du Général de Gaulle, 94010, Créteil Cedex, France
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57
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Quintana J, de la Cal A, Boleda MR. Monitoring the complex occurrence of pesticides in the Llobregat basin, natural and drinking waters in Barcelona metropolitan area (Catalonia, NE Spain) by a validated multi-residue online analytical method. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 692:952-965. [PMID: 31539999 DOI: 10.1016/j.scitotenv.2019.07.317] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 07/19/2019] [Accepted: 07/19/2019] [Indexed: 06/10/2023]
Abstract
The European Directive 98/83/CE legislates the presence of pesticides in drinking water, but apart from a few compounds, nothing is said about which pesticides should be monitored. Nevertheless, water companies need to go beyond the accomplishment of the legislation and find out pesticide contamination in all sources of water in order to manage the hazard assessment, and to guarantee safe drinking water to all the population. The aim of this work was to develop an analytical multi-residue method for circa 100 compounds. The method analyses previously monitored compounds in Barcelona city and its metropolitan area, as well as many emerging pesticides and some transformation products. An on-line sample extraction (0.75 mL) coupled to fast UHPLC-MS/MS method was developed. Good linearity (r2 > 0.995, with less residuals than 15%), accuracies and precisions under 25%, and acceptable expanded uncertainties were obtained for most of the monitored compounds, according to ISO/IEC 17025, obtaining limits of quantification between 5 and 25 ng/L for all compounds. A monitoring campaign on natural and treated waters in the Barcelona metropolitan area was carried out during 2016-2017. Results showed that pesticide contamination at the low stretch of Llobregat River and in its aquifer is severe. The maximum concentrations were in the range of few μg/L for carbendazim, DEET, diuron and propiconazole, and in the range 0.1-0.5 μg/L for bentazone, imidacloprid, isoproturon, simazine, metazachlor, methomyl, terbutryn and tebuconazole. However, the efficiency of advanced treatments in the DWTPs involved in drinking water production in the Barcelona metropolitan area allows the complete removal of pesticides and a safe water production for consumers. The method shows a good analytical performance for most compounds with a fast sample preparation and analysis. In addition, it has updated the knowledge about the occurrence of pesticides in the Barcelona city area.
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Affiliation(s)
- Jordi Quintana
- Aigües de Barcelona, Empresa Metropolitana de Gestió del Cicle Integral de l'Aigua, S.A. General Batet 1-7, 08028 Barcelona, Spain.
| | - Agustina de la Cal
- Aigües de Barcelona, Empresa Metropolitana de Gestió del Cicle Integral de l'Aigua, S.A. General Batet 1-7, 08028 Barcelona, Spain
| | - M Rosa Boleda
- Aigües de Barcelona, Empresa Metropolitana de Gestió del Cicle Integral de l'Aigua, S.A. General Batet 1-7, 08028 Barcelona, Spain.
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58
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Kiefer K, Müller A, Singer H, Hollender J. New relevant pesticide transformation products in groundwater detected using target and suspect screening for agricultural and urban micropollutants with LC-HRMS. WATER RESEARCH 2019; 165:114972. [PMID: 31450217 DOI: 10.1016/j.watres.2019.114972] [Citation(s) in RCA: 107] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 08/05/2019] [Accepted: 08/09/2019] [Indexed: 05/12/2023]
Abstract
Groundwater is a major drinking water resource, but its quality is threatened by a broad variety of anthropogenic micropollutants (MPs), originating from agriculture, industry, or households, and undergoing various transformation processes during subsurface passage. To determine a worst-case impact of pesticide application in agriculture on groundwater quality, a target and suspect screening for more than 300 pesticides and more than 1100 pesticide transformation products (TPs) was performed in 31 Swiss groundwater samples which predominantly originated from areas with intensive agriculture. To assess additional urban contamination sources, more than 250 common urban MPs were quantified. Most of the screened pesticide TPs were experimentally observed by the pesticide producers within the European pesticide registration. To cover very polar pesticide TPs, vacuum-assisted evaporative concentration was used for enrichment, followed by liquid chromatography high-resolution tandem mass spectrometry (LC-HRMS/MS). Based on intensity, isotope pattern, retention time, and in silico fragmentation, the suspect hits were prioritised and verified. We identified 22 suspects unequivocally and five tentatively; 13 TPs are reported here for the first time to be detected in groundwater. In 13 out of 31 groundwater samples, the total concentration of the 20 identified and quantified suspects (1 pesticide and 19 pesticide TPs) exceeded the total concentration of the 519 targets (236 pesticides and TPs; 283 urban MPs) for which we screened. Pesticide TPs had higher concentrations than the parent pesticides, illustrating their importance for groundwater quality. The newly identified very polar chlorothalonil TP R471811 was the only compound detected in all samples with concentrations ranging from 3 to 2700 ng/L. Agricultural MP concentration and detection frequency correlated with agricultural land use in the catchment, except for aquifers, where protective top layers reduced MP transport from the surface. In contrast to agricultural MPs, urban MPs displayed almost no correlation with land use. The dominating entry pathway of urban MPs was river bank filtration.
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Affiliation(s)
- Karin Kiefer
- Eawag: Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstrasse 133, 8600, Duebendorf, Switzerland; Institute of Biogeochemistry and Pollutant Dynamics, Universitätstrasse 16, ETH Zürich, 8092, Zurich, Switzerland
| | - Adrian Müller
- Eawag: Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstrasse 133, 8600, Duebendorf, Switzerland
| | - Heinz Singer
- Eawag: Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstrasse 133, 8600, Duebendorf, Switzerland
| | - Juliane Hollender
- Eawag: Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstrasse 133, 8600, Duebendorf, Switzerland; Institute of Biogeochemistry and Pollutant Dynamics, Universitätstrasse 16, ETH Zürich, 8092, Zurich, Switzerland.
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59
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Sjerps RMA, Kooij PJF, van Loon A, Van Wezel AP. Occurrence of pesticides in Dutch drinking water sources. CHEMOSPHERE 2019; 235:510-518. [PMID: 31280041 DOI: 10.1016/j.chemosphere.2019.06.207] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 06/18/2019] [Accepted: 06/26/2019] [Indexed: 06/09/2023]
Abstract
We determined pesticide occurrence in groundwater and surface water sources used for drinking water production in The Netherlands, using both routine monitoring data from Dutch drinking water companies and by studying the presence of newly authorized pesticides in drinking water sources. An analytical LC-MS/MS method was developed for 24 recently authorized pesticides, selected based on their mobility and persistence, and applied in a Dutch/Belgian ground- and surface water monitoring campaign. 15 of these pesticides were detected, including seven in concentrations above the water quality standard from the Water Framework Directive. Two neonicotinoids were detected in highest concentrations: acetamiprid (1.1 μg/L) and thiamethoxam (0.4 μg/L). The routine monitoring data was collected over 2010-2014 in The Netherlands, covering 408 pesticides and 52 metabolites. 63 pesticides and 6 metabolites were prioritized according to their presence in groundwater, surface water and drinking water. The vast majority of the pesticides in routine monitoring has not been detected or only in low concentrations. Overall, the study shows that pesticides are of major concern in drinking water sources across the Netherlands. In two third of the abstraction areas pesticides and/or metabolites have been detected. In one third of the abstraction areas pesticide and/or metabolites concentration exceeded water quality standards according to the Water Framework Directive. The results emphasize that monitoring should focus on priority pesticides, since the vast majority of the pesticides has a low priority. The occurrence of recently authorized pesticides in drinking water sources demonstrates the importance to keep routine monitoring methods up to date.
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Affiliation(s)
- Rosa M A Sjerps
- KWR Watercycle Research Institute, Nieuwegein, the Netherlands; Oasen, Gouda, the Netherlands
| | | | - Arnaut van Loon
- KWR Watercycle Research Institute, Nieuwegein, the Netherlands
| | - Annemarie P Van Wezel
- KWR Watercycle Research Institute, Nieuwegein, the Netherlands; Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, PO Box 94240, 1090GE, Amsterdam, the Netherlands.
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60
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Lévesque S, Graham T, Bejan D, Lawson J, Zhang P, Dixon M. Inactivation of Rhizoctonia solani in fertigation water using regenerative in situ electrochemical hypochlorination. Sci Rep 2019; 9:14237. [PMID: 31578375 PMCID: PMC6775103 DOI: 10.1038/s41598-019-50600-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 09/10/2019] [Indexed: 11/17/2022] Open
Abstract
The capture and re-use of greenhouse fertigation water is an efficient use of fertilizer and limited water resources, although the practice is not without risk. Plant pathogens and chemical contaminants can build up over successive capture and re-use cycles; if not properly managed they can lead to reduced productivity or crop loss. There are numerous established and emerging water treatment technologies available to treat fertigation water. Electrochemical processes are emerging as effective means for controlling pathogens via in situ regenerative hypochlorination; a process that is demonstrated here to achieve pathogen control in fertigation solutions without leading to the accumulation of potentially phytotoxic free chlorine residuals associated with other chlorination processes. An electrochemical flow cell (EFC) outfitted with ruthenium dioxide (RuO2) dimensionally stable anodes (DSA) was characterized and evaluated for free chlorine production and Rhizoctonia solani inactivation in both irrigation and fertigation solutions. Pathogen inactivation was achieved at low current densities and short residence or cell contact times. Effluent free chlorine concentrations were significantly lower than commonly reported phytotoxic threshold values (approximately 2.5 mg/L) when fertilizer (containing ammonium) was present in the test solution; an effect attributable to reactions associated with breakpoint chlorination, including chloramine formation, as well as the presence of other oxidizable compounds in the fertilizer. Chloride concentrations were stable under the test conditions suggesting that the EFC was operating as a regenerative in situ electrochemical hypochlorination system. No significant changes to macronutrient concentrations were found following passage through the EFC.
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Affiliation(s)
- Serge Lévesque
- Controlled Environment Systems Research Facility, School of Environmental Science, University of Guelph, Guelph, Ontario, N1G 2W1, Canada.
| | - Thomas Graham
- Controlled Environment Systems Research Facility, School of Environmental Science, University of Guelph, Guelph, Ontario, N1G 2W1, Canada
| | - Dorin Bejan
- Environmental Technology Consultant for CESRF, 275 Royalton Common Unit 49, Oakville, Ontario, L6H 0N2, Canada
| | - Jamie Lawson
- Controlled Environment Systems Research Facility, School of Environmental Science, University of Guelph, Guelph, Ontario, N1G 2W1, Canada
| | - Ping Zhang
- Controlled Environment Systems Research Facility, School of Environmental Science, University of Guelph, Guelph, Ontario, N1G 2W1, Canada
| | - Mike Dixon
- Controlled Environment Systems Research Facility, School of Environmental Science, University of Guelph, Guelph, Ontario, N1G 2W1, Canada
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61
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Lei W, Tang X, Zhou X. Quantifying dynamic desorption of 3,5,6-trichloro-2-pyridinol in loamy farmland soils. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:30782-30793. [PMID: 31444723 DOI: 10.1007/s11356-019-06233-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 08/16/2019] [Indexed: 06/10/2023]
Abstract
Reliable estimate of the release of adsorbed pesticide from soil particles is crucial to evaluating the pesticide fate, mobility, efficacy, and remediation. In this study, the dynamics of TCP (3,5,6-trichloro-2-pyridinol) desorption, the main degradation product of chlorpyrifos and triclopyr, is explored quantitatively by the breakthrough curve (BTC) experiment with the tracer of Br- in the loamy farmland purple soil sampled from Sichuan Basin of southwestern China. TCP in the outflow originates from two sources: dissolved TCP in pore water and desorbed TCP from soil particles by infiltrating water. The dissolved TCP is considered proportional to the amount of Br- because both TCP and Br- are dissolved in water uniformly. According to the mass balance equation, the desorbed TCP are estimated and the typical patterns of dynamic TCP desorption are revealed. Characteristics of TCP desorption are compared between packed and undisturbed soil columns as well as between different planting types. The dynamics of the proportion of desorbed TCP during the breakthrough process are characterized. In particular, the high heterogeneity of the undisturbed soil may be responsible for the observed fluctuation of desorbed TCP in the outflow. Additionally, the obtained increase-decrease pattern of the desorbed rate of TCP released from the soil shows that most models proposed to simulate the desorption processes are not appropriate, because these models display a monotone decreasing trend, such as the Noyes-Whitney Rule and other release kinetic models (zero order, first order, Higuchi and Korsmeyer-Peppas model, etc.). After a comparison among linear model, Gamma distribution and Weibull distribution, the CDF of gamma distribution is identified as a better method to describe the proportion of desorbed TCP in outflow. Therefore, this study provides an alternative method to measure the dynamic desorption process of TCP in different environment of the purple soil, and their affecting factors are also identified. These results are useful in quantifying the leaching of the TCP in the field, in support of the prevention of agricultural non-point pollution of pesticides.
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Affiliation(s)
- Wenjuan Lei
- College of Tea Science, Guizhou University, Guiyang, 550025, China
- Institute of Mountain Hazards and Environment, CAS, Chengdu, 610041, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiangyu Tang
- Institute of Mountain Hazards and Environment, CAS, Chengdu, 610041, China.
| | - Xiangyang Zhou
- College of Resource and Environment Engineering, Guizhou University, Guiyang, 550025, China
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Quaglia G, Joris I, Broekx S, Desmet N, Koopmans K, Vandaele K, Seuntjens P. A spatial approach to identify priority areas for pesticide pollution mitigation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 246:583-593. [PMID: 31202826 DOI: 10.1016/j.jenvman.2019.04.120] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Revised: 04/19/2019] [Accepted: 04/29/2019] [Indexed: 06/09/2023]
Abstract
Identifying priority areas is an essential step in developing management strategies to reduce pesticide loads in surface water. A spatially explicit model-based approach was developed to detect priority areas for diffuse pesticide pollution at catchment scale. The method uses available datasets and considers different pesticide pathways in the environment post-application. The approach was applied in a catchment area in SE Flanders (Belgium) as a case study. Calculated risk areas were obtained using detailed landscape data and combining pesticide emissions and hydrological connectivity. The risk areas obtained were further compared with an alternative observation-based method, developed specifically for this study site that includes long-term field observations and local expert knowledge. Both methods equally classified 50% of the areas. The impact of crop rotation on the calculated risk was analysed. High-risk areas were identified and added to a cumulative map over all five years to evaluate temporal variations. The model-based approach was used for the initial identification of risk areas at the study site. The tool helps to prioritise zones and detect particular fields to target landscape mitigation measures to reduce diffuse pesticide pollution reaching surface water bodies.
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Affiliation(s)
- Gisela Quaglia
- VITO, Flemish Institute for Technological Research, Environmental Modelling Unit, Boeretang 200, B-2400 Mol, Belgium; Department of Environment, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium.
| | - Ingeborg Joris
- VITO, Flemish Institute for Technological Research, Environmental Modelling Unit, Boeretang 200, B-2400 Mol, Belgium; Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - Steven Broekx
- VITO, Flemish Institute for Technological Research, Environmental Modelling Unit, Boeretang 200, B-2400 Mol, Belgium
| | - Nele Desmet
- VITO, Flemish Institute for Technological Research, Environmental Modelling Unit, Boeretang 200, B-2400 Mol, Belgium
| | - Kim Koopmans
- pcfruit npo, Fruittuinweg 1, B-3800 Sint-Truiden, Belgium
| | - Karel Vandaele
- Watering Sint-Truiden, Breendonkstraat 3, B-3800 Sint-Truiden, Belgium
| | - Piet Seuntjens
- VITO, Flemish Institute for Technological Research, Environmental Modelling Unit, Boeretang 200, B-2400 Mol, Belgium; Department of Environment, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium; Institute for Environment and Sustainable Development, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
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63
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Ruiz D, Regnier SM, Kirkley AG, Hara M, Haro F, Aldirawi H, Dybala MP, Sargis RM. Developmental exposure to the endocrine disruptor tolylfluanid induces sex-specific later-life metabolic dysfunction. Reprod Toxicol 2019; 89:74-82. [PMID: 31260803 DOI: 10.1016/j.reprotox.2019.06.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 06/16/2019] [Accepted: 06/26/2019] [Indexed: 02/06/2023]
Abstract
Endocrine-disrupting chemicals (EDCs) are implicated in the developmental mis-programming of energy metabolism. This study examined the impact of combined gestational and lactational exposure to the fungicide tolylfluanid (TF) on metabolic physiology in adult offspring. C57BL/6 J dams received standard rodent chow or the same diet containing 67 mg/kg TF. Offspring growth and metabolism were assessed up to 22 weeks of age. TF-exposed offspring exhibited reduced weaning weight. Body weight among female offspring remained low throughout the study, while male offspring matched controls by 17 weeks of age. Female offspring exhibited reduced glucose tolerance, markedly enhanced systemic insulin sensitivity, reduced adiposity, and normal gluconeogenic capacity during adulthood. In contrast, male offspring exhibited impaired glucose tolerance with unchanged insulin sensitivity, no differences in adiposity, and increased gluconeogenic capacity. These data indicate that developmental exposure to TF induces sex-specific metabolic disruptions that recapitulate key aspects of other in utero growth restriction models.
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Affiliation(s)
- Daniel Ruiz
- Committee on Molecular Metabolism and Nutrition, Chicago, IL, United States; University of Chicago, Chicago, IL, United States
| | - Shane M Regnier
- Committee on Molecular Metabolism and Nutrition, Chicago, IL, United States; Pritzker School of Medicine, Chicago, IL, United States; University of Chicago, Chicago, IL, United States
| | - Andrew G Kirkley
- Committee on Molecular Pathogenesis and Molecular Medicine, Chicago, IL, United States; University of Chicago, Chicago, IL, United States
| | - Manami Hara
- Section of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Chicago, IL, United States; University of Chicago, Chicago, IL, United States
| | - Fidel Haro
- University of Chicago, Chicago, IL, United States
| | - Hani Aldirawi
- Department of Mathematics, Statistics, and Computer Science, University of Illinois at Chicago, Chicago, IL, United States
| | - Michael P Dybala
- Section of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Chicago, IL, United States
| | - Robert M Sargis
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, University of Illinois at Chicago, Chicago, IL, United States.
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Solís RR, Gimeno O, Rivas FJ, Beltrán FJ. Simulated solar driven photolytic ozonation for the oxidation of aqueous recalcitrant-to-ozone tritosulfuron. Transformation products and toxicity. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 233:513-522. [PMID: 30594116 DOI: 10.1016/j.jenvman.2018.12.068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 12/10/2018] [Accepted: 12/19/2018] [Indexed: 06/09/2023]
Abstract
This work reports the combination of ozone and solar radiation as an advanced oxidation process to remove the herbicide tritosufuron (TSF) in water. Firstly, the recalcitrance of TSF has been assessed, obtaining an ozonation second order rate constant of 5-154 M-1 min-1 in the range of pH from 5 to 8; while the rate constant with HO was found to be (1.8-3.1)·109 M-1 s-1. Secondly, the simultaneous application of simulated solar radiation in between 300 and 800 nm and ozone resulted positive in the oxidation rate of TSF. Mineralization extent was also higher. Less effective oxidation was achieved after limiting the radiation to the range 360-800 nm or 390-800 nm; also completely inappropriate for mineralization. Thirdly, the detected transformation products (TPs) demonstrated the vulnerability of TSF molecule to be attacked by HO in the sulfonylurea bridge. The combination of ozone and radiation of 300-800 nm led to the most effective removal of the TPs. Finally, after the photolytic ozonation treatment toxicity was also evaluated in terms of phytotoxicity towards the germination and root elongation of Lactuca Sativa seeds, and toxicity by immobilization tests of Daphnia Magna.
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Affiliation(s)
- Rafael R Solís
- Departamento de Ingeniería Química y Química Física, Universidad de Extremadura, Avda. Elvas s/n, 06006, Badajoz, Spain; Instituto Universitario del Agua, Cambio Climático y Sostenibilidad (IACYS), Universidad de Extremadura, Avda. de la Investigación s/n, 06006, Badajoz, Spain.
| | - Olga Gimeno
- Departamento de Ingeniería Química y Química Física, Universidad de Extremadura, Avda. Elvas s/n, 06006, Badajoz, Spain; Instituto Universitario del Agua, Cambio Climático y Sostenibilidad (IACYS), Universidad de Extremadura, Avda. de la Investigación s/n, 06006, Badajoz, Spain
| | - F Javier Rivas
- Departamento de Ingeniería Química y Química Física, Universidad de Extremadura, Avda. Elvas s/n, 06006, Badajoz, Spain; Instituto Universitario del Agua, Cambio Climático y Sostenibilidad (IACYS), Universidad de Extremadura, Avda. de la Investigación s/n, 06006, Badajoz, Spain
| | - Fernando J Beltrán
- Departamento de Ingeniería Química y Química Física, Universidad de Extremadura, Avda. Elvas s/n, 06006, Badajoz, Spain; Instituto Universitario del Agua, Cambio Climático y Sostenibilidad (IACYS), Universidad de Extremadura, Avda. de la Investigación s/n, 06006, Badajoz, Spain
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Zhao R, Zhang X, Chen F, Man X, Jiang W. Study on Electrochemical Degradation of Nicosulfuron by IrO₂-Based DSA Electrodes: Performance, Kinetics, and Degradation Mechanism. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:E343. [PMID: 30691144 PMCID: PMC6388240 DOI: 10.3390/ijerph16030343] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 01/21/2019] [Accepted: 01/21/2019] [Indexed: 11/20/2022]
Abstract
The widely used sulfonylurea herbicides have caused negative effects on the environment and human beings. Electrochemical degradation has attracted much attention in the treatment of refractory organic compounds due to its advantage of producing no secondary pollution. Three kinds of IrO₂-based dimensionally stable anodes (DSAs) were used to degrade nicosulfuron by a batch electrochemical process. The results showed that a well-distributed crack network was formed on the Ti/Ta₂O₅-IrO₂ electrode and Ti/Ta₂O₅-SnO₂-IrO₂ electrode due to the different coefficients of thermal expansion between the Ti substrate and oxide coatings. The oxygen evolution potential (OEP) increased according to the order of Ti/RuO₂-IrO₂ < Ti/Ta₂O₅-SnO₂-IrO₂ < Ti/Ta₂O₅-IrO₂. Among the three electrodes, the Ti/Ta₂O₅-IrO₂ electrode showed the highest efficiency and was chosen as the experimental electrode. Single factor experiments were carried out to obtain the optimum electrolysis condition, shown as follows: currency intensity 0.8 A; electrode spacing 3 cm, electrolyte pH 3. Under the optimum conditions, the degradation of nicosulfuron followed first-order kinetics and was mainly due to indirect electrochemical oxidation. It was a typical diffusion-controlled electrochemical process. On the basis of the intermediate identified by high performance liquid chromatograph-mass spectrometry (HPLC-MS), two possible degradation routes were proposed.
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Affiliation(s)
- Rui Zhao
- College of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Ji'nan 250353, China.
| | - Xuan Zhang
- College of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Ji'nan 250353, China.
| | - Fanli Chen
- Jinan Tianzheng Technology Co., Ltd., Ji'nan 250353, China.
| | - Xiaobing Man
- Shandong Bluetown Analysis and Testing Co., Ltd, Ji'nan 250353, China.
| | - Wenqiang Jiang
- College of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Ji'nan 250353, China.
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de Queiroz VT, Azevedo MM, da Silva Quadros IP, Costa AV, do Amaral AA, Dos Santos GMADA, Juvanhol RS, de Almeida Telles LA, Dos Santos AR. Environmental risk assessment for sustainable pesticide use in coffee production. JOURNAL OF CONTAMINANT HYDROLOGY 2018; 219:18-27. [PMID: 30342837 DOI: 10.1016/j.jconhyd.2018.08.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 08/17/2018] [Accepted: 08/29/2018] [Indexed: 06/08/2023]
Abstract
The extensive use of pesticides in agricultural practices has been associated with human health problems and environmental contamination worldwide. Brazil is the largest consumer of pesticides in the world and Espírito Santo State stands out as the second Brazilian producer of coffee. However, there is no information about environmental impact of coffee producing at Itapemirim River Basin (IRB) region, Espírito Santo State, Brazil; hence a simple and quick method using open access softwares (AGROSCRE and ARAquá Web) to estimate surface entrainment and pesticide leaching potential was carried out. AGROSCRE evaluates the contamination risk of superficial and groundwater by Active Ingredients (AIs), using GOSS Method, GUS index and US EPA criteria, while ARAquá Web estimates AI concentrations in water resources, indicating their suitability based on water quality requirements for different uses. Regarding pesticides used in coffee plantations, there is 44.7% chance of surface water and 23.7% chance of groundwater contamination. Results showed that ametryne, cyproconazole, diuron, epoxiconazole, flutriafol, triadimenol and triazophos pose contamination risk to both surface water and groundwater in the IRB region. Of these, 10.5% of the total AIs are triazoles and fall under environmental classes II and III (Product Very/Dangerous to the Environment). The AIs ametryne, thiamethoxam, iprodione, flutriafol, triazophos, endosulfan, triadimenol, cyproconazole, diuron, pendimethalin, chlorpyrifos, copper II hydroxide, etion, epoxiconazole and paraquat dichloride, were found to be potentially toxic, presenting environmental concentrations ranging from 123.40 μg L-1 to 0.14 μg L-1, which are higher than the safety standard for potable water (0.1 μg L-1). With respect to these AIs, chlorpyrifos, ethion and triazophos showed concentrations higher than EC50 values for aquatic invertebrates and ametryne and diuron for algae. Thus, local residents and environment may be at high risk of pesticide exposure, when these AIs are used in coffee plantations next to surface water or groundwater.
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Affiliation(s)
- Vagner Tebaldi de Queiroz
- Graduate Program in Agrochemistry, Federal University of Espírito Santo/UFES, Alto Universitário, s/n 29500-000 Alegre, ES, Brazil.
| | - Mariane Martins Azevedo
- Graduate Program in Agrochemistry, Federal University of Espírito Santo/UFES, Alto Universitário, s/n 29500-000 Alegre, ES, Brazil
| | - Iana Pedro da Silva Quadros
- Graduate Program in Agrochemistry, Federal University of Espírito Santo/UFES, Alto Universitário, s/n 29500-000 Alegre, ES, Brazil
| | - Adilson Vidal Costa
- Graduate Program in Agrochemistry, Federal University of Espírito Santo/UFES, Alto Universitário, s/n 29500-000 Alegre, ES, Brazil
| | - Atanásio Alves do Amaral
- Aquaculture Sector, Federal Institute of Espírito Santo/Ifes, Highway BR 482, km 47, Rive District, Alegre 29500-000, ES, Brazil
| | | | - Ronie Silva Juvanhol
- Graduate Program in Forest Sciences, Federal University of Espírito Santo/UFES, Av. Governador Lindemberg; 316, Jerônimo Monteiro 29550-000, ES, Brazil
| | - Lucas Arthur de Almeida Telles
- Graduate Program in Forest Sciences, Federal University of Viçosa/UFV, Av. Peter Henry Rolfs; s/n 36570-000, Viçosa, MG, Brazil
| | - Alexandre Rosa Dos Santos
- Graduate Program in Forest Sciences, Federal University of Espírito Santo/UFES, Av. Governador Lindemberg; 316, Jerônimo Monteiro 29550-000, ES, Brazil; Graduate Program in Forest Sciences, Federal University of Viçosa/UFV, Av. Peter Henry Rolfs; s/n 36570-000, Viçosa, MG, Brazil
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Hollender J, Rothardt J, Radny D, Loos M, Epting J, Huggenberger P, Borer P, Singer H. Comprehensive micropollutant screening using LC-HRMS/MS at three riverbank filtration sites to assess natural attenuation and potential implications for human health. WATER RESEARCH X 2018; 1:100007. [PMID: 31194029 PMCID: PMC6549901 DOI: 10.1016/j.wroa.2018.100007] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 09/06/2018] [Accepted: 10/25/2018] [Indexed: 05/22/2023]
Abstract
Riverbank filtration (RBF) is used worldwide to produce high quality drinking water. With river water often contaminated by micropollutants (MPs) from various sources, this study addresses the occurrence and fate of such MPs at three different RBF sites with oxic alluvial sediments and short travel times to the drinking water well down to hours. A broad range of MPs with various physico-chemical properties were analysed with detection limits in the low ng L-1 range using solid phase extraction followed by liquid chromatography coupled to tandem high resolution mass spectrometry. Out of the 526 MPs targeted, a total of 123 different MPs were detected above the limit of quantification at the three different RBF sites. Of the 75-96 MPs detected in each river, 43-59% were attenuated during RBF. The remaining total concentrations of the MPs in the raw drinking water accounted to 0.6-1.6 μgL-1 with only a few compounds exceeding 0.1 μgL-1, an often used threshold value. The attenuation was most pronounced in the first meters of infiltration with a full elimination of 17 compounds at all three sites. However, a mixing with groundwater related to regional groundwater flow complicated the characterisation of natural attenuation potentials along the transects. Additional non-target screening at one site revealed similar trends for further non-target components. Overall, a risk assessment of the target and estimated non-target compound concentrations finally indicated during the sampling period no health risk of the drinking water according to current guidelines. Our results demonstrate that monitoring of contamination sources within a catchment and the affected water quality remains important in such vulnerable systems with partially short residence times.
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Affiliation(s)
- Juliane Hollender
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstrasse 133, 8600 Duebendorf, Switzerland
- Institute of Biogeochemistry and Pollutant Dynamics, Universitätstrasse 16, ETH Zürich, 8092 Zurich, Switzerland
| | - Judith Rothardt
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstrasse 133, 8600 Duebendorf, Switzerland
| | - Dirk Radny
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstrasse 133, 8600 Duebendorf, Switzerland
| | - Martin Loos
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstrasse 133, 8600 Duebendorf, Switzerland
| | - Jannis Epting
- Applied and Environmental Geology, University of Basel, Bernoullistrasse 32, 4056 Basel, Switzerland
| | - Peter Huggenberger
- Applied and Environmental Geology, University of Basel, Bernoullistrasse 32, 4056 Basel, Switzerland
| | - Paul Borer
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstrasse 133, 8600 Duebendorf, Switzerland
| | - Heinz Singer
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstrasse 133, 8600 Duebendorf, Switzerland
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Hensen B, Lange J, Jackisch N, Zieger F, Olsson O, Kümmerer K. Entry of biocides and their transformation products into groundwater via urban stormwater infiltration systems. WATER RESEARCH 2018; 144:413-423. [PMID: 30059904 DOI: 10.1016/j.watres.2018.07.046] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 07/14/2018] [Accepted: 07/17/2018] [Indexed: 06/08/2023]
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.
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Affiliation(s)
- Birte Hensen
- Institute of Sustainable and Environmental Chemistry, Leuphana University of Lüneburg, Universitätsallee 1, 21335, Lüneburg, Germany.
| | - Jens Lange
- Hydrology, Faculty of Environment and Natural Resources, University of Freiburg, Friedrichstraße 39, 79098, Freiburg, Germany
| | - Nicole Jackisch
- Environmental Agency, The City of Freiburg, Fehrenbachallee 12, 79106, Freiburg, Germany
| | - Franziska Zieger
- Hydrology, Faculty of Environment and Natural Resources, University of Freiburg, Friedrichstraße 39, 79098, Freiburg, Germany
| | - Oliver Olsson
- Institute of Sustainable and Environmental Chemistry, Leuphana University of Lüneburg, Universitätsallee 1, 21335, Lüneburg, Germany.
| | - Klaus Kümmerer
- Institute of Sustainable and Environmental Chemistry, Leuphana University of Lüneburg, Universitätsallee 1, 21335, Lüneburg, Germany
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Matsushita T, Morimoto A, Kuriyama T, Matsumoto E, Matsui Y, Shirasaki N, Kondo T, Takanashi H, Kameya T. Removals of pesticides and pesticide transformation products during drinking water treatment processes and their impact on mutagen formation potential after chlorination. WATER RESEARCH 2018; 138:67-76. [PMID: 29573630 DOI: 10.1016/j.watres.2018.01.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 01/09/2018] [Accepted: 01/13/2018] [Indexed: 06/08/2023]
Abstract
Removal efficiencies of 28 pesticide transformation products (TPs) and 15 parent pesticides during steps in drinking water treatment (coagulation-sedimentation, activated carbon adsorption, and ozonation) were estimated via laboratory-scale batch experiments, and the mechanisms underlying the removal at each step were elucidated via regression analyses. The removal via powdered activated carbon (PAC) treatment was correlated positively with the log Kow at pH 7. The adjusted coefficient of determination (r2) increased when the energy level of the highest occupied molecular orbital (HOMO) was added as an explanatory variable, the suggestion being that adsorption onto PAC particles was largely governed by hydrophobic interactions. The residual error could be partly explained by π-π electron donor-acceptor interactions between the graphene surface of the PAC particles and the adsorbates. The removal via ozonation correlated positively with the energy level of the HOMO, probably because compounds with relatively high energy level HOMOs could more easily transfer an electron to the lowest unoccupied molecular orbital of ozone. Overall, the TPs tended to be more difficult to remove via PAC adsorption and ozonation than their parent pesticides. However, the TPs that were difficult to remove via PAC adsorption did not induce strong mutagenicity after chlorination, and the TPs that were associated with strong mutagenicity after chlorination could be removed via PAC adsorption. Therefore, PAC adsorption is hypothesized to be an effective method of treating drinking water to reduce the possibility of post-chlorination mutagenicity associated with both TPs and their parent pesticides.
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Affiliation(s)
- Taku Matsushita
- Faculty of Engineering Hokkaido University, N13W8, Sapporo 060-8628, Japan.
| | - Ayako Morimoto
- Graduate School of Engineering, Hokkaido University, N13W8, Sapporo 060-8628, Japan
| | - Taisuke Kuriyama
- Graduate School of Engineering, Hokkaido University, N13W8, Sapporo 060-8628, Japan
| | - Eisuke Matsumoto
- Graduate School of Engineering, Hokkaido University, N13W8, Sapporo 060-8628, Japan
| | - Yoshihiko Matsui
- Faculty of Engineering Hokkaido University, N13W8, Sapporo 060-8628, Japan
| | - Nobutaka Shirasaki
- Faculty of Engineering Hokkaido University, N13W8, Sapporo 060-8628, Japan
| | - Takashi Kondo
- Graduate School of Engineering, Hokkaido University, N13W8, Sapporo 060-8628, Japan
| | - Hirokazu Takanashi
- Faculty of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan
| | - Takashi Kameya
- Faculty of Environment and Information Sciences, Yokohama National University, 79-7 Tokiwadai, Hodogaya, Yokohama 240-8501, Japan
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Farlin J, Gallé T, Bayerle M, Pittois D, Köppchen S, Krause M, Hofmann D. Breakthrough dynamics of s-metolachlor metabolites in drinking water wells: Transport pathways and time to trend reversal. JOURNAL OF CONTAMINANT HYDROLOGY 2018; 213:62-72. [PMID: 29789148 DOI: 10.1016/j.jconhyd.2018.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 05/09/2018] [Indexed: 06/08/2023]
Abstract
We present the results of a two years study on the contamination of the Luxembourg Sandstone aquifer by metolachlor-ESA and metolachlor-OXA, two major transformation products of s-metolachlor. The aim of the study was twofold: (i) assess whether elevated concentrations of both transformation products (up to 1000 ng/l) were due to fast flow breakthough events of short duration or the signs of a contamination of the entire aquifer and (ii) estimate the time to trend reversal once the parent compound was withdrawn from the market. These two questions were addressed by a combined use of groundwater monitoring, laboratory experiments and numerical simulations of the fate of the degradation products in the subsurface. Twelve springs were sampled weekly over an eighteen month period, and the degradation rates of both the parent compound and its transformation products were measured on a representative soil in the laboratory using a radiolabeled precursor. Modelling with the numeric code PEARL simulating pesticide fate in soil coupled to a simple transfer function model for the aquifer compartment, and calibrated from the field and laboratory data, predicts a significant damping by the aquifer of the peaks of concentration of both metolachlor-ESA and -OXA leached from the soil. The time to trend reversal following the ban of s-metolachlor in spring protection zones should be observed before the end of the decade, while the return of contaminant concentrations below the drinking water limit of 100 ng/l however is expected to last up to twelve years. The calculated contribution to total water discharge of the fast-flow component from cropland and short-circuiting the aquifer was small in most springs (median of 1.2%), but sufficient to cause additional peaks of concentration of several hundred nanograms per litre in spring water. These peaks are superimposed on the more steady contamination sustained by the base flow, and should cease immediately once application of the parent compound stops.
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Affiliation(s)
- Julien Farlin
- Environmental Research and Innovation (ERIN), Luxembourg Institute of Science and Technology, 41, Rue Du Brill, Belvaux, Luxembourg.
| | - Tom Gallé
- Environmental Research and Innovation (ERIN), Luxembourg Institute of Science and Technology, 41, Rue Du Brill, Belvaux, Luxembourg
| | - Michael Bayerle
- Environmental Research and Innovation (ERIN), Luxembourg Institute of Science and Technology, 41, Rue Du Brill, Belvaux, Luxembourg
| | - Denis Pittois
- Environmental Research and Innovation (ERIN), Luxembourg Institute of Science and Technology, 41, Rue Du Brill, Belvaux, Luxembourg
| | - Stephan Köppchen
- Institute of Bio-and Geosciences, Helmholtz Centre Jülich, Wilhelm-Johnen-Strasse, 52428 Jülich, Germany
| | - Martina Krause
- Institute of Bio-and Geosciences, Helmholtz Centre Jülich, Wilhelm-Johnen-Strasse, 52428 Jülich, Germany
| | - Diana Hofmann
- Institute of Bio-and Geosciences, Helmholtz Centre Jülich, Wilhelm-Johnen-Strasse, 52428 Jülich, Germany
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71
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Regnier SM, Kirkley AG, Ruiz D, Kamau W, Wu Q, Kannan K, Sargis RM. Diet-dependence of metabolic perturbations mediated by the endocrine disruptor tolylfluanid. Endocr Connect 2018; 7:159-168. [PMID: 29187361 PMCID: PMC5776670 DOI: 10.1530/ec-17-0320] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Accepted: 11/28/2017] [Indexed: 12/19/2022]
Abstract
Emerging evidence implicates environmental endocrine-disrupting chemicals (EDCs) in the pathogenesis of metabolic diseases such as obesity and diabetes; however, the interactions between EDCs and traditional risk factors in disease pathogenesis remain incompletely characterized. The present study interrogates the interaction of the EDC tolylfluanid (TF) and traditional dietary stressors in the promotion of metabolic dysfunction. Eight-week-old male C57BL/6 mice were fed a high-fat, high-sucrose diet (HFHSD) or a high-sucrose diet (HSD), with or without TF supplementation at 100 μg/g, for 12 weeks. Food intake, body weight and visceral adiposity were quantified. Glucose homeostasis was interrogated by intraperitoneal glucose and insulin tolerance tests at 9 and 10 weeks of exposure, respectively. After 12 weeks of dietary exposure, metabolic cage analyses were performed to interrogate nutrient handling and energy expenditure. In the background of an HFHSD, TF promoted glucose intolerance; however, weight gain and insulin sensitivity were unchanged, and visceral adiposity was reduced. In the background of an HSD, TF increased visceral adiposity; however, glucose tolerance and insulin sensitivity were unchanged, while weight gain was reduced. Thus, these analyses reveal that the metabolic perturbations induced by dietary exposure to TF, including the directionality of alterations in body weight gain, visceral adiposity and glucose homeostasis, are influenced by dietary macronutrient composition, suggesting that populations may exhibit distinct metabolic risks based on their unique dietary characteristics.
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Affiliation(s)
- Shane M Regnier
- Committee on Molecular Metabolism and NutritionChicago, Illinois, USA
- Pritzker School of MedicineChicago, Illinois, USA
- University of ChicagoChicago, Illinois, USA
| | - Andrew G Kirkley
- University of ChicagoChicago, Illinois, USA
- Committee on Molecular Pathogenesis and Molecular MedicineChicago, Illinois, USA
| | - Daniel Ruiz
- Committee on Molecular Metabolism and NutritionChicago, Illinois, USA
- University of ChicagoChicago, Illinois, USA
| | | | - Qian Wu
- Wadsworth CenterNew York Department of Health, Albany, New York, USA
| | | | - Robert M Sargis
- Division of EndocrinologyDiabetes, and Metabolism, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois, USA
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72
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Herrero-Hernández E, Rodríguez-Cruz MS, Pose-Juan E, Sánchez-González S, Andrades MS, Sánchez-Martín MJ. Seasonal distribution of herbicide and insecticide residues in the water resources of the vineyard region of La Rioja (Spain). THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 609:161-171. [PMID: 28750227 DOI: 10.1016/j.scitotenv.2017.07.113] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 07/12/2017] [Accepted: 07/12/2017] [Indexed: 04/15/2023]
Abstract
Pesticides are needed to maintain high production in the vineyard area of La Rioja (Spain), and monitoring their spatial distribution is a priority for preserving the quality of natural resources. Accordingly, the purpose of this work was to conduct a study to evaluate the presence and seasonal distribution of herbicide and insecticide residues in ground and surface waters in this region. The monitoring network comprised 12 surface waters and 78 groundwaters, covering the three subareas (63,593ha) into which the vineyard region is divided. The quality of natural waters was examined through the analysis of twenty-two herbicides, eight of their main degradation products, and eight insecticides. Pesticides were extracted by solid-phase extraction, and analysed by gas chromatography-mass spectrometry or by liquid-chromatography-mass spectrometry. The results reveal the presence of most of the herbicides and insecticides included in the study in one or more of the samples collected during the four campaigns. The herbicide terbuthylazine and its metabolite desethylterbuthylazine were the compounds more frequently detected (present in >65% of the samples across all the campaigns). Other compounds detected in >50% of the samples in one sampling campaign were the herbicides fluometuron, metolachlor, alachlor and ethofumesate. Insecticides were present in a small number of samples, with only pirimicarb being detected in >25% of the samples in March and June campaigns. The results reveal that the sum of compounds detected (mainly herbicides) was higher than 0.5μgL-1 in >50% of the samples, especially in the campaigns with the highest application of these compounds. A possible recovery of the quality of the waters was detected outside the periods of crop cultivation, although more monitoring programmes are needed to confirm this trend with a view to preventing and/or maintaining the sustainability of natural resources.
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Affiliation(s)
- Eliseo Herrero-Hernández
- Institute of Natural Resources and Agrobiology of Salamanca (IRNASA-CSIC), Cordel de Merinas 40-52, 37008 Salamanca, Spain.
| | - M Sonia Rodríguez-Cruz
- Institute of Natural Resources and Agrobiology of Salamanca (IRNASA-CSIC), Cordel de Merinas 40-52, 37008 Salamanca, Spain
| | - Eva Pose-Juan
- Institute of Natural Resources and Agrobiology of Salamanca (IRNASA-CSIC), Cordel de Merinas 40-52, 37008 Salamanca, Spain
| | - Sara Sánchez-González
- Institute of Natural Resources and Agrobiology of Salamanca (IRNASA-CSIC), Cordel de Merinas 40-52, 37008 Salamanca, Spain
| | - M Soledad Andrades
- Departamento de Agricultura y Alimentación, Universidad de La Rioja, 51 Madre de Dios, 26006 Logroño, Spain
| | - Maria J Sánchez-Martín
- Institute of Natural Resources and Agrobiology of Salamanca (IRNASA-CSIC), Cordel de Merinas 40-52, 37008 Salamanca, Spain
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73
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Efficient biodegradation of dihalogenated benzonitrile herbicides by recombinant Escherichia coli harboring nitrile hydratase-amidase pathway. Biochem Eng J 2017. [DOI: 10.1016/j.bej.2017.05.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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74
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Electrochemical fabrication of NZVI/TiO 2 nano-tube arrays photoelectrode and its enhanced visible light photocatalytic performance and mechanism for degradation of 4-chlorphenol. Sep Purif Technol 2017. [DOI: 10.1016/j.seppur.2017.03.047] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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75
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Groundwater contamination with 2,6-dichlorobenzamide (BAM) and perspectives for its microbial removal. Appl Microbiol Biotechnol 2017; 101:5235-5245. [PMID: 28616645 DOI: 10.1007/s00253-017-8362-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 05/23/2017] [Accepted: 05/25/2017] [Indexed: 01/26/2023]
Abstract
The pesticide metabolite 2,6-dichlorobenzamide (BAM) is very persistent in both soil and groundwater and has become one of the most frequently detected groundwater micropollutants. BAM is not removed by the physico-chemical treatment techniques currently used in drinking water treatment plants (DWTP); therefore, if concentrations exceed the legal threshold limit, it represents a sizeable problem for the stability and quality of drinking water production, especially in places that depend on groundwater for drinking water. Bioremediation is suggested as a valuable strategy for removing BAM from groundwater by deploying dedicated BAM-degrading bacteria in DWTP sand filters. Only a few bacterial strains with the capability to degrade BAM have been isolated, and of these, only three isolates belonging to the Aminobacter genus are able to mineralise BAM. Considerable effort has been made to elucidate degradation pathways, kinetics and degrader genes, and research has recently been presented on the application of strain Aminobacter sp. MSH1 for the purification of BAM-contaminated water. The aim of the present review was to provide insight into the issue of BAM contamination and to report on the current status and knowledge with regard to the application of microorganisms for purification of BAM-contaminated water resources. This paper discusses the prospects and challenges for bioaugmentation of DWTP sand filters with specific BAM-degrading bacteria and identifies relevant perspectives for future research.
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76
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Qu Z, Bai X, Zhang T, Yang Z. Ultrasound-assisted extraction and solid-phase extraction for the simultaneous determination of five amide herbicides in fish samples by gas chromatography with electron capture detection. J Sep Sci 2017; 40:1142-1149. [DOI: 10.1002/jssc.201601092] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 12/09/2016] [Accepted: 12/15/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Zhipeng Qu
- College of Chemistry and Chemical Engineering; Central South University; Changsha Hunan P.R. China
| | - Xiuzhi Bai
- College of Chemistry and Chemical Engineering; Central South University; Changsha Hunan P.R. China
| | - Ting Zhang
- College of Chemistry and Chemical Engineering; Central South University; Changsha Hunan P.R. China
| | - Zhaoguang Yang
- College of Chemistry and Chemical Engineering; Central South University; Changsha Hunan P.R. China
- Center for Environment and Water Resources; Central South University; Changsha Hunan P.R. China
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77
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Herrero-Hernández E, Pose-Juan E, Sánchez-Martín MJ, Andrades MS, Rodríguez-Cruz MS. Intra-annual trends of fungicide residues in waters from vineyard areas in La Rioja region of northern Spain. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:22924-22936. [PMID: 27578090 DOI: 10.1007/s11356-016-7497-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 08/22/2016] [Indexed: 04/15/2023]
Abstract
The temporal trends of fungicides in surface and ground water in 90 samples, including both surface waters (12) and ground waters (78) from an extensive vineyard area located in La Rioja (Spain), were examined between September 2010 and September 2011. Fungicides are used in increasing amounts on vines in many countries, and they may reach the water resources. However, few data have been published on fungicides in waters, with herbicides being the most frequently monitored compounds. The presence, distribution and year-long evolution of 17 fungicides widely used in the region and a degradation product were evaluated in waters during four sampling campaigns. All the fungicides included in the study were detected at one or more of the points sampled during the four campaigns. Metalaxyl, its metabolite CGA-92370, penconazole and tebuconazole were the fungicides detected in the greatest number of samples, although myclobutanil, CGA-92370 and triadimenol were detected at the highest concentrations. The highest levels of individual fungicides were found in Rioja Alavesa, with concentrations of up to 25.52 μg L-1, and more than 40 % of the samples recorded a total concentration of >0.5 μg L-1. More than six fungicides were positively identified in a third of the ground and surface waters in all the sampling campaigns. There were no significant differences between the results obtained in the four sampling campaigns and corroborated a pattern of diffuse contamination from the use of fungicides. The results confirm that natural waters in the study area are extremely vulnerable to contamination by fungicides and highlight the need to implement strategies to prevent and control water contamination by these compounds.
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Affiliation(s)
- Eliseo Herrero-Hernández
- Instituto de Recursos Naturales y Agrobiología de Salamanca (IRNASA-CSIC), Cordel de Merinas 40-52, 37008, Salamanca, Spain
| | - Eva Pose-Juan
- Instituto de Recursos Naturales y Agrobiología de Salamanca (IRNASA-CSIC), Cordel de Merinas 40-52, 37008, Salamanca, Spain
| | - María J Sánchez-Martín
- Instituto de Recursos Naturales y Agrobiología de Salamanca (IRNASA-CSIC), Cordel de Merinas 40-52, 37008, Salamanca, Spain.
| | - M Soledad Andrades
- Departamento de Agricultura y Alimentación, Universidad de La Rioja, 51 Madre de Dios, 26006, Logroño, Spain
| | - M Sonia Rodríguez-Cruz
- Instituto de Recursos Naturales y Agrobiología de Salamanca (IRNASA-CSIC), Cordel de Merinas 40-52, 37008, Salamanca, Spain
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78
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Sidoli P, Lassabatere L, Angulo-Jaramillo R, Baran N. Experimental and modeling of the unsaturated transports of S-metolachlor and its metabolites in glaciofluvial vadose zone solids. JOURNAL OF CONTAMINANT HYDROLOGY 2016; 190:1-14. [PMID: 27131475 DOI: 10.1016/j.jconhyd.2016.04.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Revised: 02/25/2016] [Accepted: 04/01/2016] [Indexed: 06/05/2023]
Abstract
The transport of pesticides to groundwater is assumed to be impacted by flow processes and geochemical interactions occurring in the vadose zone. In this study, the transport of S-metolachlor (SMOC) and its two metabolites ESA-metolachlor (MESA) and OXA-metolachlor (MOXA) in vadose zone materials of a glaciofluvial aquifer is studied at laboratory scale. Column experiments are used to study the leaching of a conservative tracer (bromide) and SMOC, MESA and MOXA under unsaturated conditions in two lithofacies, a bimodal gravel (Gcm,b) and a sand (S-x). Tracer experiments showed water fractionation into mobile and immobile compartments more pronounced in bimodal gravel columns. In both lithofacies columns, SMOC outflow is delayed (retardation factor>2) and mass balance reveals depletion (mass balance of 0.59 and 0.77 in bimodal gravel and sand, respectively). However, complete mass elution associated with retardation factors close to unity shows that there is no adsorption of MESA and MOXA in either lithofacies. SMOC transport is characterized by non-equilibrium sorption and sink term in both bimodal gravel and sand columns. Batch experiments carried out using agitation times consistent with column water residence times confirmed a time-dependence of SMOC sorption and high adsorption rates (>80%) of applied concentrations. Desorption experiments confirm the irreversibility of a major part of the SMOC adsorption onto particles, corresponding to the sink term in columns. In the bimodal gravel column, SMOC adsorption occurs mainly on reactive particles in contact with mobile water because of flow regionalization whereas in the sand column, there is pesticide diffusion to the immobile water. Such results clearly show that sorption mechanisms in the vadose zone solids below the soil are both solute and contact-time-dependent and are impacted by hydrodynamic conditions. The more rapid transport of MESA and MOXA to the aquifer would be controlled mainly by water flow through the unsaturated zone whereas SMOC transport is retarded by sorption processes within the vadose zone.
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Affiliation(s)
- Pauline Sidoli
- BRGM, 3 Avenue Claude Guillemin, BP 36009, 45060 Orléans Cedex 2, France; Université de Lyon, UMR5023 Ecologie des Hydrosystèmes Naturels et Anthropisés, CNRS, ENTPE, Université Lyon 1, 3 rue Maurice Audin, 69518 Vaulx-en-Velin, France.
| | - Laurent Lassabatere
- Université de Lyon, UMR5023 Ecologie des Hydrosystèmes Naturels et Anthropisés, CNRS, ENTPE, Université Lyon 1, 3 rue Maurice Audin, 69518 Vaulx-en-Velin, France.
| | - Rafael Angulo-Jaramillo
- Université de Lyon, UMR5023 Ecologie des Hydrosystèmes Naturels et Anthropisés, CNRS, ENTPE, Université Lyon 1, 3 rue Maurice Audin, 69518 Vaulx-en-Velin, France.
| | - Nicole Baran
- BRGM, 3 Avenue Claude Guillemin, BP 36009, 45060 Orléans Cedex 2, France.
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79
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Sadaria A, Supowit SD, Halden RU. Mass Balance Assessment for Six Neonicotinoid Insecticides During Conventional Wastewater and Wetland Treatment: Nationwide Reconnaissance in United States Wastewater. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:6199-206. [PMID: 27196423 PMCID: PMC4930273 DOI: 10.1021/acs.est.6b01032] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Occurrence and removal of six high-production high-volume neonicotinoids was investigated in 13 conventional wastewater treatment plants (WWTPs) and one engineered wetland. Flow-weighted daily composites were analyzed by isotope dilution liquid chromatography tandem mass spectrometry, revealing the occurrence of imidacloprid, acetamiprid, and clothianidin at ng/L concentrations in WWTP influent (60.5 ± 40.0; 2.9 ± 1.9; 149.7 ± 289.5, respectively) and effluent (58.5 ± 29.1; 2.3 ± 1.4; 70.2 ± 121.8, respectively). A mass balance showed insignificant removal of imidacloprid (p = 0.09, CI = 95%) and limited removal of the sum of acetamiprid and its degradate, acetamiprid-N-desmethyl (18 ± 4%, p = 0.01, CI = 95%). Clothianidin was found only intermittently, whereas thiamethoxam, thiacloprid, and dinotefuran were never detected. In the wetland, no removal of imidacloprid or acetamiprid was observed. Extrapolation of data from 13 WWTPs to the nation as a whole suggests annual discharges on the order of 1000-3400 kg/y of imidacloprid contained in treated effluent to surface waters nationwide. This first mass balance and first United States nationwide wastewater reconnaissance identified imidacloprid, acetamiprid, and clothianidin as recalcitrant sewage constituents that persist through wastewater treatment to enter water bodies at significant loadings, potentially harmful to sensitive aquatic invertebrates.
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80
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Di Guardo A, Finizio A. A moni-modelling approach to manage groundwater risk to pesticide leaching at regional scale. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 545-546:200-209. [PMID: 26747983 DOI: 10.1016/j.scitotenv.2015.12.056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Revised: 12/13/2015] [Accepted: 12/13/2015] [Indexed: 06/05/2023]
Abstract
Historically, the approach used to manage risk of chemical contamination of water bodies is based on the use of monitoring programmes, which provide a snapshot of the presence/absence of chemicals in water bodies. Monitoring is required in the current EU regulations, such as the Water Framework Directive (WFD), as a tool to record temporal variation in the chemical status of water bodies. More recently, a number of models have been developed and used to forecast chemical contamination of water bodies. These models combine information of chemical properties, their use, and environmental scenarios. Both approaches are useful for risk assessors in decision processes. However, in our opinion, both show flaws and strengths when taken alone. This paper proposes an integrated approach (moni-modelling approach) where monitoring data and modelling simulations work together in order to provide a common decision framework for the risk assessor. This approach would be very useful, particularly for the risk management of pesticides at a territorial level. It fulfils the requirement of the recent Sustainable Use of Pesticides Directive. In fact, the moni-modelling approach could be used to identify sensible areas where implement mitigation measures or limitation of use of pesticides, but even to effectively re-design future monitoring networks or to better calibrate the pedo-climatic input data for the environmental fate models. A case study is presented, where the moni-modelling approach is applied in Lombardy region (North of Italy) to identify groundwater vulnerable areas to pesticides. The approach has been applied to six active substances with different leaching behaviour, in order to highlight the advantages in using the proposed methodology.
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Affiliation(s)
- Andrea Di Guardo
- Department of Earth and Environmental Sciences (DISAT), Università degli studi di Milano-Bicocca, piazza della Scienza, n. 1, 20126 Milano, Italy; Informatica ambientale, via Pacini 62, 20131 Milano, Italy
| | - Antonio Finizio
- Department of Earth and Environmental Sciences (DISAT), Università degli studi di Milano-Bicocca, piazza della Scienza, n. 1, 20126 Milano, Italy
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81
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Maillard E, Lange J, Schreiber S, Dollinger J, Herbstritt B, Millet M, Imfeld G. Dissipation of hydrological tracers and the herbicide S-metolachlor in batch and continuous-flow wetlands. CHEMOSPHERE 2016; 144:2489-2496. [PMID: 26630289 DOI: 10.1016/j.chemosphere.2015.11.027] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 11/04/2015] [Accepted: 11/07/2015] [Indexed: 06/05/2023]
Abstract
Pesticide dissipation in wetland systems with regard to hydrological conditions and operational modes is poorly known. Here, we investigated in artificial wetlands the impact of batch versus continuous-flow modes on the dissipation of the chiral herbicide S-metolachlor (S-MET) and hydrological tracers (bromide, uranine and sulforhodamine B). The wetlands received water contaminated with the commercial formulation Mercantor Gold(®) (960 g L(-1) of S-MET, 87% of the S-enantiomer). The tracer mass budget revealed that plant uptake, sorption, photo- and presumably biodegradation were prominent under batch mode (i.e. characterized by alternating oxic-anoxic conditions), in agreement with large dissipation of S-MET (90%) under batch mode. Degradation was the main dissipation pathway of S-MET in the wetlands. The degradate metolachlor oxanilic acid (MOXA) mainly formed under batch mode, whereas metolachlor ethanesulfonic acid (MESA) prevailed under continuous-flow mode, suggesting distinct degradation pathways in each wetland. R-enantiomer was preferentially degraded under batch mode, which indicated enantioselective biodegradation. The release of MESA and MOXA by the wetlands as well as the potential persistence of S-MET compared to R-MET under both oxic and anoxic conditions may be relevant for groundwater and ecotoxicological risk assessment. This study shows the effect of batch versus continuous modes on pollutant dissipation in wetlands, and that alternate biogeochemical conditions under batch mode enhance S-MET biodegradation.
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Affiliation(s)
- Elodie Maillard
- Laboratoire d'Hydrologie et de Géochimie de Strasbourg (LHyGeS), UMR 7517, Université de Strasbourg/EOST, CNRS, 1 rue Blessig, 67084 Strasbourg Cedex, France
| | - Jens Lange
- Chair of Hydrology, University of Freiburg, Fahnenbergplatz, D-79098 Freiburg, Germany
| | - Steffi Schreiber
- Chair of Hydrology, University of Freiburg, Fahnenbergplatz, D-79098 Freiburg, Germany
| | - Jeanne Dollinger
- Laboratoire d'Hydrologie et de Géochimie de Strasbourg (LHyGeS), UMR 7517, Université de Strasbourg/EOST, CNRS, 1 rue Blessig, 67084 Strasbourg Cedex, France
| | - Barbara Herbstritt
- Chair of Hydrology, University of Freiburg, Fahnenbergplatz, D-79098 Freiburg, Germany
| | - Maurice Millet
- Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé ICPEES, UMR 7515, Groupe de Physico-Chimie de l'Atmosphère, Université de Strasbourg/CNRS, France
| | - Gwenaël Imfeld
- Laboratoire d'Hydrologie et de Géochimie de Strasbourg (LHyGeS), UMR 7517, Université de Strasbourg/EOST, CNRS, 1 rue Blessig, 67084 Strasbourg Cedex, France.
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82
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López A, Yusà V, Millet M, Coscollà C. Retrospective screening of pesticide metabolites in ambient air using liquid chromatography coupled to high-resolution mass spectrometry. Talanta 2015; 150:27-36. [PMID: 26838378 DOI: 10.1016/j.talanta.2015.11.068] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 11/24/2015] [Accepted: 11/26/2015] [Indexed: 10/22/2022]
Abstract
A new methodology for the retrospective screening of pesticide metabolites in ambient air was developed, using liquid chromatography coupled to Orbitrap high-resolution mass spectrometry (UHPLC-HRMS), including two systematic workflows (i) post-run target screening (suspect screening) and (ii) non-target screening. An accurate-mass database was built and used for the post-run screening analysis. The database contained 240 pesticide metabolites found in different matrixes such as air, soil, water, plants, animals and humans. For non-target analysis, a "fragmentation-degradation" relationship strategy was selected. The proposed methodology was applied to 31 air samples (PM10) collected in the Valencian Region (Spain). In the post-target analysis 34 metabolites were identified, of which 11 (3-ketocarburan, carbofuran-7-phenol, carbendazim, desmethylisoproturon, ethiofencarb-sulfoxide, malaoxon, methiocarb-sulfoxide, N-(2-ethyl-6-methylphenyl)-L-alanine, omethoate, 2-hydroxy-terbuthylazine, and THPAM) were confirmed using analytical standards. The semiquantitative estimated concentration ranged between 6.78 and 198.31 pg m(-3). Likewise, two unknown degradation products of malaoxon and fenhexamid were elucidated in the non-target screening.
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Affiliation(s)
- Antonio López
- Foundation for the Promotion of Health and Biomedical Research in the Valencian Region, FISABIO-Public Health, 21, Avenida Catalunya, 46020 Valencia, Spain; Public Health Laboratory of Valencia, 21, Avenida Catalunya, 46020 Valencia, Spain
| | - Vicent Yusà
- Foundation for the Promotion of Health and Biomedical Research in the Valencian Region, FISABIO-Public Health, 21, Avenida Catalunya, 46020 Valencia, Spain; Analytical Chemistry Department, University of Valencia, Edifici Jeroni Muñoz, Dr. Moliner 50, 46100 Burjassot, Spain; Public Health Laboratory of Valencia, 21, Avenida Catalunya, 46020 Valencia, Spain.
| | - Maurice Millet
- Institut de Chimie et Procedes pour l'Energie, l'Environnement et la Sante, ICPEES UMR 7515, Groupe de Physico-Chimie de l'Atmosphere, Université de Strasbourg/CNRS, France
| | - Clara Coscollà
- Foundation for the Promotion of Health and Biomedical Research in the Valencian Region, FISABIO-Public Health, 21, Avenida Catalunya, 46020 Valencia, Spain; Public Health Laboratory of Valencia, 21, Avenida Catalunya, 46020 Valencia, Spain
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83
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T'Syen J, Tassoni R, Hansen L, Sorensen SJ, Leroy B, Sekhar A, Wattiez R, De Mot R, Springael D. Identification of the Amidase BbdA That Initiates Biodegradation of the Groundwater Micropollutant 2,6-dichlorobenzamide (BAM) in Aminobacter sp. MSH1. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:11703-13. [PMID: 26308673 DOI: 10.1021/acs.est.5b02309] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
2,6-dichlorobenzamide (BAM) is a recalcitrant groundwater micropollutant that poses a major problem for drinking water production in European countries. Aminobacter sp. MSH1 and related strains have the unique ability to mineralize BAM at micropollutant concentrations but no information exists on the genetics of BAM biodegradation. An amidase-BbdA-converting BAM to 2,6-dichlorobenzoic acid (DCBA) was purified from Aminobacter sp. MSH1. Heterologous expression of the corresponding bbdA gene and its absence in MSH1 mutants defective in BAM degradation, confirmed its BAM degrading function. BbdA shows low amino acid sequence identity with reported amidases and is encoded by an IncP1-β plasmid (pBAM1, 40.6 kb) that lacks several genes for conjugation. BbdA has a remarkably low KM for BAM (0.71 μM) and also shows activity against benzamide and ortho-chlorobenzamide (OBAM). Differential proteomics and transcriptional reporter analysis suggest the constitutive expression of bbdA in MSH1. Also in other BAM mineralizing Aminobacter sp. strains, bbdA and pBAM1 appear to be involved in BAM degradation. BbdA's high affinity for BAM and its constitutive expression are of interest for using strain MSH1 in treatment of groundwater containing micropollutant concentrations of BAM for drinking water production.
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Affiliation(s)
- Jeroen T'Syen
- Division of Soil and Water Management, KU Leuven , Kasteelpark Arenberg 20, 3001 Leuven, Belgium
| | - Raffaella Tassoni
- Division of Soil and Water Management, KU Leuven , Kasteelpark Arenberg 20, 3001 Leuven, Belgium
| | - Lars Hansen
- Department of Biology, University of Copenhagen , Universitetsparken 15, 2100 København, Denmark
| | - Søren J Sorensen
- Department of Biology, University of Copenhagen , Universitetsparken 15, 2100 København, Denmark
| | - Baptiste Leroy
- Department of Proteomics and Microbiology, Research Institute for Biosciences, University of Mons , Place du Parc 20, 7000 Mons, Belgium
| | - Aswini Sekhar
- Division of Soil and Water Management, KU Leuven , Kasteelpark Arenberg 20, 3001 Leuven, Belgium
| | - Ruddy Wattiez
- Department of Proteomics and Microbiology, Research Institute for Biosciences, University of Mons , Place du Parc 20, 7000 Mons, Belgium
| | - René De Mot
- Centre of Microbial and Plant Genetics, KU Leuven , Kasteelpark Arenberg 20, 3001 Leuven, Belgium
| | - Dirk Springael
- Division of Soil and Water Management, KU Leuven , Kasteelpark Arenberg 20, 3001 Leuven, Belgium
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84
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Jekel M, Dott W, Bergmann A, Dünnbier U, Gnirß R, Haist-Gulde B, Hamscher G, Letzel M, Licha T, Lyko S, Miehe U, Sacher F, Scheurer M, Schmidt CK, Reemtsma T, Ruhl AS. Selection of organic process and source indicator substances for the anthropogenically influenced water cycle. CHEMOSPHERE 2015; 125:155-67. [PMID: 25563167 DOI: 10.1016/j.chemosphere.2014.12.025] [Citation(s) in RCA: 93] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Revised: 12/12/2014] [Accepted: 12/14/2014] [Indexed: 05/11/2023]
Abstract
An increasing number of organic micropollutants (OMP) is detected in anthropogenically influenced water cycles. Source control and effective natural and technical barriers are essential to maintain a high quality of drinking water resources under these circumstances. Based on the literature and our own research this study proposes a limited number of OMP that can serve as indicator substances for the major sources of OMP, such as wastewater treatment plants, agriculture and surface runoff. Furthermore functional indicators are proposed that allow assessment of the proper function of natural and technical barriers in the aquatic environment, namely conventional municipal wastewater treatment, advanced treatment (ozonation, activated carbon), bank filtration and soil aquifer treatment as well as self-purification in surface water. These indicator substances include the artificial sweetener acesulfame, the anti-inflammatory drug ibuprofen, the anticonvulsant carbamazepine, the corrosion inhibitor benzotriazole and the herbicide mecoprop among others. The chemical indicator substances are intended to support comparisons between watersheds and technical and natural processes independent of specific water cycles and to reduce efforts and costs of chemical analyses without losing essential information.
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Affiliation(s)
- Martin Jekel
- Centre for Water in Urban Areas, Technische Universität Berlin, Sekr. KF4, Straße des 17. Juni 135, 10623 Berlin, Germany
| | - Wolfgang Dott
- Institute of Hygiene and Environmental Medicine, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany
| | - Axel Bergmann
- IWW Water Centre, Water Resources Management, 45476 Mühlheim/Ruhr, Germany
| | - Uwe Dünnbier
- Berliner Wasserbetriebe, Neue Jüdenstraße 1, 10179 Berlin, Germany
| | - Regina Gnirß
- Berliner Wasserbetriebe, Neue Jüdenstraße 1, 10179 Berlin, Germany
| | - Brigitte Haist-Gulde
- DVGW-Technologiezentrum Wasser (TZW), Karlsruher Straße 84, 76139 Karlsruhe, Germany
| | - Gerd Hamscher
- Institute for Food Chemistry and Food Biotechnology, Justus Liebig University, Heinrich-Buff-Ring 58, 35392 Giessen, Germany
| | - Marion Letzel
- Bavarian Environmental Agency, Demollstraße 31, 82407 Wielenbach, Germany
| | - Tobias Licha
- Geoscience Centre, Department of Applied Geology, University Göttingen, Goldschmidtstraße 3, 37077 Göttingen, Germany
| | - Sven Lyko
- Emschergenossenschaft, Kronprinzenstraße 24, 45128 Essen, Germany
| | - Ulf Miehe
- Berlin Centre of Competence for Water, Cicerostraße 24, 10709 Berlin, Germany
| | - Frank Sacher
- DVGW-Technologiezentrum Wasser (TZW), Karlsruher Straße 84, 76139 Karlsruhe, Germany
| | - Marco Scheurer
- DVGW-Technologiezentrum Wasser (TZW), Karlsruher Straße 84, 76139 Karlsruhe, Germany
| | | | - Thorsten Reemtsma
- Helmholtz Centre for Environmental Research (UFZ), Department of Analytical Chemistry, Permoserstraße 15, 04318 Leipzig, Germany
| | - Aki Sebastian Ruhl
- Centre for Water in Urban Areas, Technische Universität Berlin, Sekr. KF4, Straße des 17. Juni 135, 10623 Berlin, Germany.
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85
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Giannouli DD, Antonopoulos VZ. Evaluation of two pesticide leaching models in an irrigated field cropped with corn. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2015; 150:508-515. [PMID: 25560660 DOI: 10.1016/j.jenvman.2014.12.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Revised: 11/26/2014] [Accepted: 12/26/2014] [Indexed: 06/04/2023]
Abstract
Pesticide leaching models is an easy and cost effective method used in the prediction of surface and groundwater pollution. In this paper, the ability of two pesticide leaching models, MACRO and PEARL, to describe soil water dynamics and atrazine's transport through the soil profile was examined. The data used for the comparison was obtained from an experiment in an irrigated corn field in the plain of the Ardas River, in north-eastern Greece. Both models were parameterized using pedotransfer functions, field and laboratory data. The uncalibrated simulation showed several discrepancies, therefore the retention curve and the sorption parameters were calibrated according to the trial and error method. The comparison of both models indicated that soil water flow was described similarly. The simulated results of atrazine's concentration were evaluated and compared to the measured concentrations at specific depths, using statistical criteria. Atrazine transport was simulated in a satisfactory manner as confirmed by model efficiency (EF) values, that are very close to unit. Coefficient of residual mass (CRM) values for both models are positive, indicating that both models underestimate the measured data. MACRO estimated higher accumulated actual evapotranspiration values, and less percolated water from soil profile than PEARL, and as a result, change in water content was higher in the latter. PEARL also predicted that half the amount of the applied mass was decayed two days earlier than the day estimated by MACRO. Generally, MACRO simulated the fate of atrazine in soil better than PEARL.
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Affiliation(s)
- Dorothea D Giannouli
- School of Agriculture, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
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86
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Regnier SM, Kirkley AG, Ye H, El-Hashani E, Zhang X, Neel BA, Kamau W, Thomas CC, Williams AK, Hayes ET, Massad NL, Johnson DN, Huang L, Zhang C, Sargis RM. Dietary exposure to the endocrine disruptor tolylfluanid promotes global metabolic dysfunction in male mice. Endocrinology 2015; 156:896-910. [PMID: 25535829 PMCID: PMC4330315 DOI: 10.1210/en.2014-1668] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Environmental endocrine disruptors are implicated as putative contributors to the burgeoning metabolic disease epidemic. Tolylfluanid (TF) is a commonly detected fungicide in Europe, and previous in vitro and ex vivo work has identified it as a potent endocrine disruptor with the capacity to promote adipocyte differentiation and induce adipocytic insulin resistance, effects likely resulting from activation of glucocorticoid receptor signaling. The present study extends these findings to an in vivo mouse model of dietary TF exposure. After 12 weeks of consumption of a normal chow diet supplemented with 100 parts per million TF, mice exhibited increased body weight gain and an increase in total fat mass, with a specific augmentation in visceral adipose depots. This increased adipose accumulation is proposed to occur through a reduction in lipolytic and fatty acid oxidation gene expression. Dietary TF exposure induced glucose intolerance, insulin resistance, and metabolic inflexibility, while also disrupting diurnal rhythms of energy expenditure and food consumption. Adipose tissue endocrine function was also impaired with a reduction in serum adiponectin levels. Moreover, adipocytes from TF-exposed mice exhibited reduced insulin sensitivity, an effect likely mediated through a specific down-regulation of insulin receptor substrate-1 expression, mirroring effects of ex vivo TF exposure. Finally, gene set enrichment analysis revealed an increase in adipose glucocorticoid receptor signaling with TF treatment. Taken together, these findings identify TF as a novel in vivo endocrine disruptor and obesogen in mice, with dietary exposure leading to alterations in energy homeostasis that recapitulate many features of the metabolic syndrome.
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Affiliation(s)
- Shane M Regnier
- Committee on Molecular Metabolism and Nutrition (S.M.R., R.M.S.), Pritzker School of Medicine (S.M.R., R.M.S.), Kovler Diabetes Center (H.Y., E.E.-H., X.Z., C.C.T., N.L.M., R.M.S.), Section of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Committee on Molecular Pathogenesis and Molecular Medicine (A.G.K., B.A.N.), Department of Pathology (D.N.J.), Center for Research Informatics (L.H., C.Z.), and University of Chicago (S.M.R., A.G.K., H.Y., E.E.-H., X.Z., B.A.N., W.K., C.C.T., N.L.M., D.N.J., L.H., C.Z., R.M.S.), Chicago, Illinois 60637; Kennedy-King College (A.K.W.), Chicago, Illinois 60621; and Walter Payton College Preparatory High School (E.T.H.), Chicago, Illinois 60610
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87
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Postigo C, Barceló D. Synthetic organic compounds and their transformation products in groundwater: occurrence, fate and mitigation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2015; 503-504:32-47. [PMID: 24974362 DOI: 10.1016/j.scitotenv.2014.06.019] [Citation(s) in RCA: 117] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Revised: 06/06/2014] [Accepted: 06/06/2014] [Indexed: 06/03/2023]
Abstract
Groundwater constitutes the main source of public drinking water supply in many regions. Thus, the contamination of groundwater resources by organic chemicals is a matter of growing concern because of its potential effects on public health. The present manuscript compiles the most recent works related to the study of synthetic organic compounds (SOCs) in groundwater, with special focus on the occurrence of contaminants not or barely covered by previously published reviews, e.g., pesticide and pharmaceutical transformation products, lifestyle products, and industrial chemicals such as corrosion inhibitors, brominated and organophosphate flame retardants, plasticizers, volatile organic compounds (VOCs), and polycyclic aromatic hydrocarbons (PAHs). Moreover, the main challenges in managed aquifer recharge, i.e., reclaimed water injection and infiltration, and riverbank filtration, regarding natural attenuation of organic micropollutants are discussed, and insights into the future chemical quality of groundwater are provided.
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Affiliation(s)
- Cristina Postigo
- Water and Soil Quality Research Group, Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research, (IDAEA-CSIC), C/ Jordi Girona, 18-26, 08034 Barcelona, Spain.
| | - Damià Barceló
- Water and Soil Quality Research Group, Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research, (IDAEA-CSIC), C/ Jordi Girona, 18-26, 08034 Barcelona, Spain; Catalan Institute for Water Research (ICRA), Parc Científic i Tecnològic de la Universitat de Girona, Edifici H2O, Emili Grahit 101, 17003 Girona, Spain
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88
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Gulkowska A, Buerge IJ, Poiger T. Online solid phase extraction LC–MS/MS method for the analysis of succinate dehydrogenase inhibitor fungicides and its applicability to surface water samples. Anal Bioanal Chem 2014; 406:6419-27. [DOI: 10.1007/s00216-014-8073-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Revised: 07/24/2014] [Accepted: 07/26/2014] [Indexed: 11/28/2022]
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89
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Padrón MET, Afonso-Olivares C, Sosa-Ferrera Z, Santana-Rodríguez JJ. Microextraction techniques coupled to liquid chromatography with mass spectrometry for the determination of organic micropollutants in environmental water samples. Molecules 2014; 19:10320-49. [PMID: 25033059 PMCID: PMC6272018 DOI: 10.3390/molecules190710320] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 07/02/2014] [Accepted: 07/10/2014] [Indexed: 11/17/2022] Open
Abstract
Until recently, sample preparation was carried out using traditional techniques, such as liquid–liquid extraction (LLE), that use large volumes of organic solvents. Solid-phase extraction (SPE) uses much less solvent than LLE, although the volume can still be significant. These preparation methods are expensive, time-consuming and environmentally unfriendly. Recently, a great effort has been made to develop new analytical methodologies able to perform direct analyses using miniaturised equipment, thereby achieving high enrichment factors, minimising solvent consumption and reducing waste. These microextraction techniques improve the performance during sample preparation, particularly in complex water environmental samples, such as wastewaters, surface and ground waters, tap waters, sea and river waters. Liquid chromatography coupled to tandem mass spectrometry (LC/MS/MS) and time-of-flight mass spectrometric (TOF/MS) techniques can be used when analysing a broad range of organic micropollutants. Before separating and detecting these compounds in environmental samples, the target analytes must be extracted and pre-concentrated to make them detectable. In this work, we review the most recent applications of microextraction preparation techniques in different water environmental matrices to determine organic micropollutants: solid-phase microextraction SPME, in-tube solid-phase microextraction (IT-SPME), stir bar sorptive extraction (SBSE) and liquid-phase microextraction (LPME). Several groups of compounds are considered organic micropollutants because these are being released continuously into the environment. Many of these compounds are considered emerging contaminants. These analytes are generally compounds that are not covered by the existing regulations and are now detected more frequently in different environmental compartments. Pharmaceuticals, surfactants, personal care products and other chemicals are considered micropollutants. These compounds must be monitored because, although they are detected in low concentrations, they might be harmful toward ecosystems.
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Affiliation(s)
- Ma Esther Torres Padrón
- Departamento de Química, Universidad de Las Palmas de Gran Canaria, 35017, Las Palmas de Gran Canaria, Spain.
| | - Cristina Afonso-Olivares
- Departamento de Química, Universidad de Las Palmas de Gran Canaria, 35017, Las Palmas de Gran Canaria, Spain.
| | - Zoraida Sosa-Ferrera
- Departamento de Química, Universidad de Las Palmas de Gran Canaria, 35017, Las Palmas de Gran Canaria, Spain.
| | - José Juan Santana-Rodríguez
- Departamento de Química, Universidad de Las Palmas de Gran Canaria, 35017, Las Palmas de Gran Canaria, Spain.
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90
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Moschet C, Wittmer I, Simovic J, Junghans M, Piazzoli A, Singer H, Stamm C, Leu C, Hollender J. How a complete pesticide screening changes the assessment of surface water quality. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2014; 48:5423-32. [PMID: 24821647 DOI: 10.1021/es500371t] [Citation(s) in RCA: 227] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
A comprehensive assessment of pesticides in surface waters is challenging due to the large number of potential contaminants. Most scientific studies and routine monitoring programs include only 15-40 pesticides, which leads to error-prone interpretations. In the present study, an extensive analytical screening was carried out using liquid chromatography-high-resolution mass spectrometry, covering 86% of all polar organic pesticides sold in Switzerland and applied to agricultural or urban land (in total 249 compounds), plus 134 transformation products; each of which could be quantified in the low ng/L range. Five medium-sized rivers, containing large areas of diverse crops and urban settlements within the respective catchments, were sampled between March and July 2012. More than 100 parent compounds and 40 transformation products were detected in total, between 30 and 50 parent compounds in each two-week composite sample in concentrations up to 1500 ng/L. The sum of pesticide concentrations was above 1000 ng/L in 78% of samples. The chronic environmental quality standard was exceeded for 19 single substances; using a mixture toxicity approach, exceedances occurred over the whole measurement period in all rivers. With scenario calculations including only 30-40 frequently measured pesticides, the number of detected substances and the mixture toxicity would be underestimated on average by a factor of 2. Thus, selecting a subset of substances to assess the surface water quality may be sufficient, but a comprehensive screening yields substantially more confidence.
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Affiliation(s)
- Christoph Moschet
- Eawag, Swiss Federal Institute of Aquatic Science and Technology , 8600 Dübendorf, Switzerland
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