Perspectives of compound-specific isotope analysis of organic contaminants for assessing environmental fate and managing chemical pollution

Nature Water, Год журнала: 2024, Номер 2(1), С. 14 - 30

Опубликована: Янв. 17, 2024

Язык: Английский

---

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

---

Modeling pesticides and ecotoxicological risk assessment in an intermittent river using SWAT

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Март 16, 2024

Abstract The present work aimed to predict the fate of two pesticides, copper (Cu) and glyphosate in a Mediterranean basin with an intermittent river assess ecotoxicological risk related their presence water bodies coupling field measurements streamflow pesticide concentrations, eco-hydrological model. Soil Water Assessment Tool (SWAT) model was calibrated and, subsequently used predicted environmental concentrations pesticides surface waters. Cu assessed at reach scale by using Toxicity Exposure Ratio approach (TER). Measurements (< 0.5 μg l −1 ) exceeded maximum European threshold quality standards for (EQS) 0.1 . High were wet season September, when is mostly vineyards olive grove productions. Acute (TER < 100) associated detected several reaches. 6.5 ), mainly as fungicide vineyards, results assessment revealed that November January critical months during which most reaches showed chronic Cu.

Язык: Английский

---

Dissipation of the insecticide profenofos in tropical agricultural soils (Berambadi catchment, South India): insight from compound-specific isotope analysis (CSIA)

Journal of Hazardous Materials, Год журнала: 2025, Номер unknown, С. 137428 - 137428

Опубликована: Янв. 1, 2025

Язык: Английский

---

Assessing human toxicity and ecotoxicity impacts of agricultural pesticide use in Iran based on the USEtox model

Ecotoxicology and Environmental Safety, Год журнала: 2025, Номер 291, С. 117785 - 117785

Опубликована: Янв. 30, 2025

Язык: Английский

---

Role of membrane porosity in passive sampling of aquatic contaminants for stable isotope analysis: enhancement of analyte accumulation rates and selectivity

Analytical and Bioanalytical Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Янв. 31, 2025

Abstract Compound-specific isotope analysis (CSIA) is a potent method for illustrating the in situ degradation of aquatic contaminants. However, its application to surface and groundwater hindered by low contaminant concentrations, typically nanogram-per-litre range, requiring processing large water volumes. Polar organic chemical integrative samplers (POCIS) have shown promising results when combined with CSIA, yet their extended deployment time accumulate sufficient analyte mass remains major limitation. In our study, we addressed this issue increasing pore size polyethersulfone membrane (PES) from 0.1 8 $$\upmu $$ μ m. This resulted significant increases accumulation rates atrazine (3.5-fold), S-metolachlor (3.4-fold), boscalid (3.0-fold). Importantly, larger sizes did not compromise isotopic integrity, $$\Delta \delta ^{13}$$ Δ δ 13 C $$\le +0.4\pm 0.1$$ ≤ + 0.4 ± 0.1 ‰ ^{15}$$ 15 N -0.6\pm 0.4$$ - 0.6 ‰, both within accepted uncertainties. Additionally, observed an enhanced selectivity pores towards target analytes over humic acids, whereas no increase (bio)fouling potential was detected m membrane, as demonstrated gravimetric analysis, SEM measurements, rates, ratios fouled unfouled POCIS. Our findings show that reduces expedites required gas chromatography ratio spectrometry, offering expand CSIA low-concentration pesticide field. Graphical abstract

Язык: Английский

---

Environmental assessment of the central Atlantic coast of Morocco using a multibiomarker approach in Mytilus galloprovincialis

Environmental Science and Pollution Research, Год журнала: 2024, Номер 31(24), С. 35320 - 35331

Опубликована: Май 10, 2024

Язык: Английский

---

Evaluating pesticide degradation in artificial wetlands with compound-specific isotope analysis: A case study with the fungicide dimethomorph

The Science of The Total Environment, Год журнала: 2023, Номер 900, С. 165767 - 165767

Опубликована: Июль 26, 2023

Язык: Английский

---

Compatibility of polar organic chemical integrative sampler (POCIS) with compound specific isotope analysis (CSIA) of substituted chlorobenzenes

The Science of The Total Environment, Год журнала: 2023, Номер 906, С. 167628 - 167628

Опубликована: Окт. 6, 2023

Язык: Английский

---

Combined effects of micropollutants and their degradation on prokaryotic communities at the sediment–water interface

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Июль 22, 2024

Pesticides and pharmaceuticals enter aquatic ecosystems as complex mixtures. Various processes govern their dissipation effect on the sediment surface waters. These micropollutants often show persistence can adversely affect microorganisms even at low concentrations. We investigated effects procaryotic communities of metformin (antidiabetic drug), metolachlor (agricultural herbicide), terbutryn (herbicide in building materials). contaminants were introduced individually or a mixture (17.6 µM per micropollutant) into laboratory microcosms mimicking sediment-water interface. Metformin completely dissipated within 70 days, whereas persisted. Dissipation did not differ whether part mixture. Sequence analysis 16S rRNA gene amplicons evidenced distinct responses prokaryotic both water. Prokaryotic community variations mainly driven by matrix composition incubation time. Micropollutant exposure played secondary but influential role, with pronounced recalcitrant micropollutant Antagonistic synergistic non-additive identified for specific taxa across taxonomic levels response to This study underscores importance considering diversity interactions between micropollutants, communities, respective environments when examining interfaces affected multiple contaminants.

Язык: Английский

---