Pollution characteristics, ecological and health risks of herbicides in a drinking water source and its inflowing rivers in North China

Environmental Pollution, Год журнала: 2023, Номер 334, С. 122130 - 122130

Опубликована: Июнь 30, 2023

Язык: Английский

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Forever Pesticides: A Growing Source of PFAS Contamination in the Environment

Environmental Health Perspectives, Год журнала: 2024, Номер 132(7)

Опубликована: Июль 1, 2024

Environmental contamination by fluorinated chemicals, in particular chemicals from the per- and polyfluoroalkyl substances (PFAS) class, has raised concerns around globe because of documented adverse impacts on human health, wildlife, ecosystem quality. Recent studies have indicated that pesticide products may contain a variety meet PFAS definition, including active ingredients themselves. Given pesticides are some most widely distributed pollutants across world, legacy addition into could be widespread wide-ranging implications agriculture food water contamination, as well presence rural environments.

Язык: Английский

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A review on mitigation of emerging contaminants in an aqueous environment using microbial bio-machines as sustainable tools: Progress and limitations

Journal of Water Process Engineering, Год журнала: 2022, Номер 47, С. 102712 - 102712

Опубликована: Март 10, 2022

Язык: Английский

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Evaluation of pesticide pollution in the Gualeguay Basin: An extensive agriculture area in Argentina

The Science of The Total Environment, Год журнала: 2022, Номер 851, С. 158142 - 158142

Опубликована: Авг. 18, 2022

Язык: Английский

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Evaluation of a graphitic porous carbon modified with iron oxides for atrazine environmental remediation in water by adsorption

Environmental Research, Год журнала: 2022, Номер 219, С. 115054 - 115054

Опубликована: Дек. 12, 2022

Язык: Английский

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Characterizing the exposure of streams in southern Ontario to agricultural pesticides

Chemosphere, Год журнала: 2022, Номер 294, С. 133769 - 133769

Опубликована: Янв. 28, 2022

Язык: Английский

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Immobilization of zirconium-modified activated carbon in an alginate matrix for the removal of atrazine: Preparation, performances and mechanisms

Environmental Technology & Innovation, Год журнала: 2024, Номер 35, С. 103699 - 103699

Опубликована: Май 31, 2024

As an organic herbicide widely used in agriculture, atrazine has the characteristics of environmental persistence, high mobility and long half-life period, posing potential risks to ecological environment. The materials commonly remove are powdered activated carbon its modified materials, which have problems such as difficulty recycling secondary contamination. In order solve above problems, this study, a new functional material EI-Zr@AC was prepared by immobilizing zirconium-modified powder (Zr@AC) alginate matrix via embedding immobilization (EI) technique, employed for removing water. At optimal preparation conditions 2.5% sodium alginate, 4.0% CaCl2, 1.0% Zr@AC 2.0% bentonite, beads had porosity, dense reticulation, large number groups with mechanical strength mass transfer properties. When solution pH 3.0, temperature 25°C, dosage 16 g/L, removal efficiency 91.9%. It showed that mainly chemisorption multimolecular layer adsorption. addition, could be recycled after simple method, at 5.0 mg/L still 55.5% five cycles, structure remained intact Zr ion leaching rate very low. results kind remediation application value.

Язык: Английский

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Occurrence, removal and risk assessment of chemicals of emerging concern in selected rivers and wastewater treatment plants in western Kenya

The Science of The Total Environment, Год журнала: 2024, Номер 948, С. 174982 - 174982

Опубликована: Июль 23, 2024

Язык: Английский

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Challenges of spatially extrapolating aquatic pesticide pollution for policy evaluation

The Science of The Total Environment, Год журнала: 2023, Номер 875, С. 162639 - 162639

Опубликована: Март 6, 2023

Aquatic pesticide pollution is an important issue worldwide. Countries rely on monitoring programs to observe water bodies quality and models evaluate risks for entire stream networks. Measurements are typically sparse discontinuous which lead issues in quantifying transport at the catchment scale. Therefore, it essential assess performance of extrapolation approaches provide guidance how extend improve predictions. Here we present a feasibility study predict levels spatially explicit manner Swiss network based national program organic micropollutants 33 sites distributed explanatory variables. Firstly, focused limited set herbicides used corn crops. We observed significant relationship between herbicide concentrations areal fraction hydrologically connected cornfields. Neglecting connectivity revealed no influence coverage levels. Considering chemical properties compounds slightly improved correlation. Secondly, analysed 18 pesticides widely different crops monitored across country. In this case, fractions arable or crop lands showed correlations with average concentrations. Similar results were found annual discharge precipitation if two outlier neglected. The paper explained only about 30 % variance leaving most variability unexplained. Accordingly, extrapolating from existing river comes substantial uncertainty. Our highlights possible reasons weak matches, such as missing application data, program, understanding factors differentiating loss rates catchments. Improving data applications will be progress regard.

Язык: Английский

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Evaluating bottle liquid-liquid extraction technique for monitoring residual levels of organochlorine pesticides in wastewater treatment-associated matrices

Chemical Engineering Journal Advances, Год журнала: 2024, Номер 18, С. 100599 - 100599

Опубликована: Март 15, 2024

The gold standard for recovering residual organochlorine pesticides from wastewater and other environmental matrices is the continuous liquid-liquid extraction (CLLE) technique that requires toxic CH2Cl2 as solvent at its refluxing temperature. In light of a recent USEPA proposed prohibitions workplace protections due to toxicity, fact CLLE performed in expensive currently hard-to-acquire glassware, an alternative practiced therefore needed. bottle (BLLE) technique, demonstrated extracting semi-volatile organic contaminants surface water, potentially low cost high throughput such recovery. BLLE cheaper, contains vapor within, has smaller laboratory footprint. tightly capped bottle, also less ambient latter means encountered workplace. this study, was directly 1-L amber sampling bottles shown recover 21 efficiently influents effluents two treatment plants, can be used interchangeably. No statistical differences were found between (mean = 77.4, SD 9.28) 79.1, 14.3); t(22) 0.548, p(same mean) .58 even though recovered more than by 5.18 ± 8.15%. This systematic bias fits expression 1.4[CLLE] – 35 (r 0.88). Both recoveries consistently higher 4,4′-DDD lower aldrin, heptachlor endrin aldehyde. Diethyl ether addition, some suggested, did not improve BLLE. Synopsis: There need find cheap, reliable purifying SVOCs aqueous media efficiently. BLLE, little known fulfils need.

Язык: Английский

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