Multi-elemental compound-specific isotope analysis of pesticides for source identification and monitoring of degradation in soil: a review

Environmental Chemistry Letters, Год журнала: 2022, Номер 20(6), С. 3927 - 3942

Опубликована: Июль 28, 2022

Язык: Английский

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20 years of polybrominated diphenyl ethers on toxicity assessments

Water Research, Год журнала: 2023, Номер 249, С. 121007 - 121007

Опубликована: Дек. 9, 2023

Язык: Английский

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Triple-Element Compound-Specific Stable Isotope Analysis (3D-CSIA): Added Value of Cl Isotope Ratios to Assess Herbicide Degradation

Environmental Science & Technology, Год журнала: 2021, Номер 55(20), С. 13891 - 13901

Опубликована: Сен. 29, 2021

Multielement isotope fractionation studies to assess pollutant transformation are well-established for point-source pollution but only emerging diffuse by micropollutants like pesticides. Specifically, chlorine is hardly explored promising, because many pesticides contain few atoms so that "undiluted" position-specific Cl effects can be expected in compound-average data. This study combined Cl, N, and C sensitively detect biotic abiotic of the widespread herbicides groundwater contaminants acetochlor, metolachlor, atrazine. For chloroacetanilides, hydrolysis pathways studied under acidic, neutral, alkaline conditions as well biodegradation two soils resulted pronounced (εCl from −5.0 ± 2.3 −6.5 0.7‰). The characteristic dual C–Cl patterns (ΛC–Cl 0.39 0.15 0.67 0.08) reveal analysis provides a robust indicator chloroacetanilide degradation. atrazine, distinct ΛC–Cl values were observed (7.4 1.9) compared previous reports oxidative dealkylation (1.7 0.9 0.6 0.1, respectively). 3D approach allowed differentiating transformations would not distinguishable based on N data alone. first set together with new atrazine degradation, highlights potential using compound-specific studying situ pesticide

Язык: Английский

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Novel extraction methods and compound-specific isotope analysis of methoxychlor in environmental water and aquifer slurry samples

The Science of The Total Environment, Год журнала: 2024, Номер 931, С. 172858 - 172858

Опубликована: Май 5, 2024

Multi-element compound-specific stable isotope analysis (ME-CSIA) allows monitoring the environmental behavior and transformation of most common persistent contaminants. Recent advancements in analytical techniques have extended applicability ME-CSIA to organic micropollutants, including pesticides. Nevertheless, application this methodology remains unexplored concerning harmful insecticides such as methoxychlor, a polar organochlorine pesticide usually detected soil groundwater. This study introduces methods for dual carbon chlorine (δ

Язык: Английский

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The Role of Ponds in Pesticide Dissipation at the Agricultural Catchment Scale: A Critical Review

Water, Год журнала: 2021, Номер 13(9), С. 1202 - 1202

Опубликована: Апрель 26, 2021

Ponds in agricultural areas are ubiquitous water retention systems acting as reactive biogeochemical hotspots controlling pesticide dissipation and transfer at the catchment scale. Several issues need to be addressed order understand, follow-up predict role of ponds limiting In this review, we present a critical overview functional processes underpinning ponds. We highlight distinguish degradative non-degradative understand sediment-water interface dissipation. Yet it is not well-established how governs scale under varying hydro-climatic conditions operation practices. To illustrate multi-scale dynamic aspects issue, sketch modelling framework integrating Such an integrated can improve spatial prediction risk assessment across catchment-ponds-river continuum facilitate management rules operations.

Язык: Английский

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Effects of three surfactants on the degradation and environmental risk of metolachlor in aquatic environment

Chemosphere, Год журнала: 2022, Номер 300, С. 134295 - 134295

Опубликована: Март 10, 2022

Язык: Английский

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Comprehensive Assessment of Contaminants and Toxicity in Pesticide Factory Effluent

Опубликована: Янв. 1, 2025

Pesticide factories are crucial for maintaining crop yields. However, pesticide factory wastewater contains complex organic pollutants that, if not properly treated, can pose severe risks to aquatic environments and human health. In this study, performed between August December 2022, influent effluent water samples were collected from a treatment facility at factory. The comprehensively screened, the present quantified by non-targeted liquid chromatography high-resolution mass spectrometry. Zebrafish embryos used as model organisms assess toxicities of samples. results indicated that processes decreased overall pollutant concentration but number persistent concentrations certain compounds (e.g., nitrogen-containing substances, 2-aminophenol, phenylmethyl ketone) increased during treatments. more toxic than zebrafish in terms development, locomotor behavior, neurotoxicity. suggested currently entirely effective some transformed into new harmful substances treatment. improve our understanding environmental posed effluents will help development stricter pollution control policies advanced techniques. It is important investigate mechanisms involved contaminant transformations develop innovative techniques aimed decreasing potential

Язык: Английский

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Application of dual carbon-bromine stable isotope analysis to characterize anaerobic micro-degradation mechanisms of PBDEs in wetland bottom-water

Water Research, Год журнала: 2021, Номер 208, С. 117854 - 117854

Опубликована: Ноя. 9, 2021

Язык: Английский

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Simple extraction methods for pesticide compound-specific isotope analysis from environmental samples

MethodsX, Год журнала: 2022, Номер 9, С. 101880 - 101880

Опубликована: Янв. 1, 2022

Compound-specific isotope analysis (CSIA) is a powerful approach to evaluate the transformation of organic pollutants in environment. However, application CSIA micropollutants, such as pesticides, remains limited because appropriate extraction methods are currently lacking. Such should address wide range pesticides and environmental matrices, while recovering sufficient mass for reliable without inducing stable fractionation. Here, we present simple carbon nitrogen different matrices six commonly used herbicides, i.e., atrazine, terbutryn, acetochlor, alachlor, butachlor, S-metolachlor, three fungicides, dimethomorph, tebuconazole, metalaxyl. We examined potential several four types soils or sediments, waters aerial root plant samples multielement (ME)-CSIA.•Pesticide recoveries varied depending on physical characteristics matrix properties water (77 87%), soil sediment (35 82%), (40 59%) extraction.•The tested did not significantly affect signatures (Δ(13C) <0.9‰ Δ(15N) <1.0‰).

Язык: Английский

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Transformation and stable isotope fractionation of the urban biocide terbutryn during biodegradation, photodegradation and abiotic hydrolysis

Chemosphere, Год журнала: 2022, Номер 305, С. 135329 - 135329

Опубликована: Июнь 13, 2022

Язык: Английский

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