Combining Passive Sampling with Suspect and Nontarget Screening to Characterize Organic Micropollutants in Streams Draining Mixed-Use Watersheds

Environmental Science & Technology, Journal Year: 2022, Volume and Issue: 56(23), P. 16726 - 16736

Published: Nov. 4, 2022

Organic micropollutants (OMPs) represent an anthropogenic stressor on stream ecosystems. In this work, we combined passive sampling with suspect and nontarget screening enabled by liquid chromatography–high-resolution mass spectrometry to characterize complex mixtures of OMPs in streams draining mixed-use watersheds. Suspect identified 122 unique for target quantification polar organic chemical integrative samplers (POCIS) grab samples collected from 20 sites upstate New York over two seasons. Hierarchical clustering established the co-occurrence profiles connection watershed attributes indicative influences. Nontarget leveraging time-integrative nature POCIS cross-site variability prioritized confirmed 11 additional compounds that were ubiquitously present monitored streams. Field rates 37 simultaneously occurred spanned range 0.02 0.22 L/d a median value 0.07 L/d. Comparative analyses daily average loads, cumulative exposure–activity ratios, multi-substance potentially affected fractions supported feasibility complementing OMP load estimation screening-level risk assessments. Overall, work demonstrated multi-watershed approach can be adapted assess contamination across landscapes.

Language: Английский

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Is there an urban pesticide signature? Urban streams in five U.S. regions share common dissolved-phase pesticides but differ in predicted aquatic toxicity

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 793, P. 148453 - 148453

Published: June 15, 2021

Language: Английский

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Continuous high-frequency pesticide monitoring to observe the unexpected and the overlooked

Water Research X, Journal Year: 2021, Volume and Issue: 13, P. 100125 - 100125

Published: Nov. 7, 2021

Synthetic Plant Protection Products (PPPs) are a key element for large part of today's global food systems. However, the transport PPPs and their transformation products (TPs) to water bodies has serious negative effects on aquatic ecosystems. Small streams in agricultural catchments may experience pronounced concentration peaks given proximity fields poor dilution capacity. Traditional sampling approaches often prevent comprehensive understanding TPs patterns being limited by trade-offs between temporal resolution duration observation period. These limitations result knowledge gap accurate ecotoxicological risk assessment achievement optimal monitoring strategies mitigation. We present here high-frequency time-series measured with autonomous MS2Field platform that combines continuous on-site measurements high-resolution mass spectrometer, which allows overcoming trade-offs. In small catchment, we continuously 60 compounds at 20 minutes 41 days during growing season. This period included 8 15 rain events provided 2560 values per compound. To identify similarities differences among compound-specific time-series, analysed entire dataset positive matrix factorisation. Six factors sufficiently captured overall complexity dynamics. While one factor reflected rainfall, five identified groups seemed share common history recent applications. The investigation event revealed surprising dynamic patterns; physico-chemical properties did not influence (dis)similarity chemographs. Some led while others lagged several hours level events. During events, always preceded peaks, were generally only observed when levels had almost receded pre-event levels. Thus, schemes relying rainfall or as proxies triggering lead systematic biases. high Swiss national integrating over 3.5 underestimated critical eight more than 32, 3 out 11 exceedances legal acute quality standards (the relevant Water Law) recorded 1 9 regulatory acceptable concentrations registration process). allowed observing unexpected overlooked pesticide dynamics consequences further research but also monitoring. variability timing relative calls in-depth analyses regarding respective mechanisms. perform these analyses, spatially distributed geo-referenced application data needed.

Language: Английский

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Integrated risk assessment framework for transformation products of emerging contaminants: what we know and what we should know

Frontiers of Environmental Science & Engineering, Journal Year: 2023, Volume and Issue: 17(7)

Published: May 10, 2023

Language: Английский

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Phosphorus doping-induced electron transfer promotes cobalt-iron biochar activation of peracetic acid: Selective reactive substance generation for pesticide degradation

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161468 - 161468

Published: March 1, 2025

Language: Английский

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Pesticide Residues in Aquatic Products: Sources, Advances in Detection Technologies, and Risk Management

Aquacultural Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 102536 - 102536

Published: March 1, 2025

Language: Английский

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Addressing emerging contaminants in agriculture affecting plant–soil interaction: a review on bio-based and nano-enhanced strategies for soil health and global food security (GFS)

Deleted Journal, Journal Year: 2025, Volume and Issue: 2(1)

Published: April 1, 2025

Abstract The agricultural sector plays a crucial role in global food security, yet its heavy reliance on chemical inputs has led to rise emerging contaminants modern agroecosystems. This review critically examines the impacts of these soil health, plant-soil interactions, and productivity. We highlight how xenobiotic compounds from pesticides, herbicides, antibiotics, fertilizers disrupt nutrient cycling microbial communities. Key contaminant classes, including pharmaceuticals, industrial pollutants, were discussed alongside their specific effects ecosystems. Additionally, this also explores innovative bio-based nano-enhanced remediation strategies, such as rhizosphere microbiome management nano-biofertilizers, which show promise mitigating impacts. Despite advancements, challenges persist regulatory frameworks, technology adoption, education. To address theses issues, we propose holistic approach integrating research, policy, stakeholder engagement. Our findings urgent need for sustainable practices that prioritize health ecosystem integrity ensure long-term security. Graphical

Language: Английский

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Caging Gammarus roeseli to track pesticide contamination: How agricultural practices shape water quality in small waterbodies?

Ecotoxicology and Environmental Safety, Journal Year: 2025, Volume and Issue: 295, P. 118143 - 118143

Published: April 1, 2025

Contaminant monitoring in agroecosystems is increasingly revealing overlooked molecules, particularly within complex pesticide mixtures. This study assessed the effectiveness of chemical and ecotoxicological methods for evaluating contamination biological responses Gammarus roeseli exposed to pesticides transformation products (TPs) lentic small water bodies (LSWBs) near agricultural zones. We examined 7 LSWBs, finding variable levels shaped by watershed composition differences. Analysis 136 compounds identified key TPs, including chlorothalonil R471811, metazachlor ESA, OXA, which collectively represented 86.2 % total quantified contaminants. These results underscore persistence both current banned ponds studied. While G. showed favorable survival rates, significant reductions locomotion ventilation were observed at heavily contaminated sites, with biochemical analyses suggesting neurotoxic effects activation detoxification mechanisms response Multivariate revealed site-specific variations, highlighting interactions between environmental conditions. Biomarker gammarids served as sensitive indicators residual toxicity frequent associations historical or applications. situ caging approach across a gradient demonstrates strong potential biomonitoring assessments agroecosystems. Extending exposure durations more could further enhance risk evaluation, thereby improving accuracy headwater aquatic ecosystems. By integrating conditions, profiles, responses, this provides valuable insights into influence practices on LSWBs underscores critical need incorporate TPs future assessment frameworks.

Language: Английский

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Integration of nontarget screening and QSAR modeling to identify novel butachlor transformation products of high priority in soil and water environment

Environment International, Journal Year: 2025, Volume and Issue: unknown, P. 109491 - 109491

Published: April 1, 2025

Butachlor (BTR), a widely used chloroacetanilide herbicide in rice paddies worldwide, has raised concerns due to limited data on its environmental transformation products (TPs) and their ecotoxicological effects. This study systematically investigates BTR's degradation kinetics, mechanisms, pathways, ecotoxicity water soil through batch tests, integrating Non-Target Screening (NTS) with Quantitative structure-activity relationship (QSAR) modeling. Hydrolysis half-lives (DT50) ranged from 73.2 196 days (pH 4-9), while photolysis were 12.9-18.6 h, indicating enhanced alkaline light-exposed conditions. In three representative soils, DT50 values 22.3 38 days, black exhibiting the most rapid degradation. Moreover, anaerobic conditions marginally accelerated both fluvo-aquic red soils. Using UPLC-Q-TOF-MS, ten TPs identified, including novel ones, four (TP191, TP225, TP277, TP293) confirmed synthetic standards. A probable mechanism was suggested based identified Density Functional Theory (DFT) calculations. Mechanistically, BTR primarily involves N-demethylation, N-debutoxylation hydrolysis, whereas it proceeds more diverse array of pathways - dechlorination, hydroxylation, dehydrogenation, N-debutoxylation, cyclization, dehydration, oxidation. Finally, Ecotoxicity modeling showed certain TPs, particularly had "extreme" acute toxicity Daphnia magna, TP277 TP293 posed higher chronic risks Danio rerio than parent compound. These findings highlight ecological advocate for inclusion risk assessments safeguard aquatic ecosystems.

Language: Английский

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Tandem field and laboratory approaches to quantify attenuation mechanisms of pharmaceutical and pharmaceutical transformation products in a wastewater effluent-dominated stream

Water Research, Journal Year: 2021, Volume and Issue: 203, P. 117537 - 117537

Published: Aug. 10, 2021

Language: Английский

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