Influence of water chemistry and operating parameters on PFOS/PFOA removal using rGO-nZVI nanohybrid

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 469, P. 133912 - 133912

Published: Feb. 28, 2024

Language: Английский

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Per- and polyfluoroalkyl substances (PFAS): Trends in mass spectrometric analysis for human biomonitoring and exposure patterns from recent global cohort studies

Environment International, Journal Year: 2024, Volume and Issue: 194, P. 109117 - 109117

Published: Nov. 7, 2024

Per- and polyfluoroalkyl substances (PFAS) are widespread environmental contaminants that have been shown to contribute human exposure, thereby raising a range of health concerns. In this context, biomonitoring is essential for linking exposure levels PFAS with their potential risks. Mass spectrometry-based analytical techniques extensively adopted the evaluation across various cohorts. However, challenges arising from use biological samples (e.g., plasma, serum, urine, etc.) necessitate ongoing research refinement methodologies. This review provides an overview current trends in mass approaches PFAS, including sample collection preparation, instrumental techniques. We also explore strategies overcome obtaining PFAS-free blank matrices address risk background contamination. Moreover, examines differing patterns regions by analyzing recent international cohort studies, specifically those conducted US China over past five years. Accordingly, several key gaps studies need be addressed moving forward highlighted.

Language: Английский

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The role and mechanisms of microbes in dichlorodiphenyltrichloroethane (DDT) and its residues bioremediation

Biotechnology Reports, Journal Year: 2024, Volume and Issue: 42, P. e00835 - e00835

Published: March 11, 2024

Environmental contamination with dichlorodiphenyltrichloroethane (DDT) has sever effects on the ecosystem worldwide. DDT is a recalcitrant synthetic chemical high toxicity and lipophilicity. It also bioaccumulated in food chain causes genotoxic, estrogenic, carcinogenic, mutagenic aquatic organisms humans. Microbial remediation mechanism its enzymes are very important for removing from environment. main residues dichlorodiphenyldichloroethylene (DDE) dichlorodiphenyldichloroethane (DDD) can biodegrade slowly soil water. To enhance this process, number of strategies proposed, such as bio-attenuation, biostimulation, bioaugmentation manipulation environmental conditions to activity microbial enzymes. The addition organic matter flooding degradation. candidates include micro-algae, fungi bacteria. This review provide brief information recommendation mechanisms.

Language: Английский

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Impact of perfluorooctanoic acid (PFOA) and perfluorobutanoic acid (PFBA) on oxidative stress and metabolic biomarkers in human neuronal cells (SH-SY5Y)

Environment International, Journal Year: 2024, Volume and Issue: 190, P. 108864 - 108864

Published: July 2, 2024

Perfluorinated alkyl substances (PFAS) are pervasive environmental contaminants that have attracted considerable attention due to their widespread utilization, resilient characteristics, adverse health implications, and regulatory scrutiny. Despite documented toxicity in living organisms, the precise molecular mechanisms governing induced effects remain unclear. This study aims elucidate of toxic action by collecting empirical data sets along oxidative stress metabolic disruption pathways. We investigated impact long-chain PFAS (perfluorooctanoic acid (PFOA)) its short-chain analog (perfluorobutanoic (PFBA)) on human neuronal cells (SH-SY5Y). The functionalities enzymes associated with (catalase glutathione reductase) cellular metabolism (lactate dehydrogenase pyruvate dehydrogenase) were also characterized. Our results reveal a 24-hour exposure PFOA PFBA generated significant levels reactive oxygen species. Correspondingly, there was notable decline catalase reductase activities, demonstrating more pronounced effect. High concentrations reduced activity. Lactate activity only impacted high concentration PFBA, while decreased increased exposure. findings from this contribute knowledge cell interactions potential underlying PFAS-induced toxicity.

Language: Английский

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Source identification and distribution of per- and polyfluoroalkyl substances (PFAS) in the freshwater environment of USA

International Journal of Environmental Science and Technology, Journal Year: 2024, Volume and Issue: unknown

Published: July 12, 2024

Language: Английский

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Review of Recent Computational Research on the Adsorption of PFASs with a Variety of Substrates

International Journal of Molecular Sciences, Journal Year: 2024, Volume and Issue: 25(6), P. 3445 - 3445

Published: March 19, 2024

The widespread use and impervious nature of per- polyfluorinated alkyl substances (PFASs) is leading to potentially harmful exposure in numerous environments. One avenue explore remediation PFAS-contaminated environments involves investigating how well PFASs adsorb onto various substrates. In the current review, we focus on summarizing recent computational research, largely involving density functional theory (DFT) molecular dynamics (MD), into adsorption interaction with a variety substrates an aim provide insight inspire further research that may lead solutions this critical problem impacts environment human health.

Language: Английский

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Species-specific profiles of per- and polyfluoroalkyl substances (PFAS) in small coastal sharks along the South Atlantic Bight of the United States

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 927, P. 171758 - 171758

Published: March 21, 2024

Language: Английский

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Poly- and perfluoroalkyl substances (PFASs) in amphibians and reptiles – exposure and health effects

Aquatic Toxicology, Journal Year: 2024, Volume and Issue: 270, P. 106907 - 106907

Published: March 31, 2024

Language: Английский

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Structure and mechanism of nanoengineered membranes toward per- and polyfluoroalkyl substances (PFAS) removal from water: A critical review

Journal of Water Process Engineering, Journal Year: 2024, Volume and Issue: 63, P. 105471 - 105471

Published: May 21, 2024

Language: Английский

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Characterizing PFASs in aquatic ecosystems with 3D hydrodynamic and water quality models

Environmental Science and Ecotechnology, Journal Year: 2024, Volume and Issue: 22, P. 100473 - 100473

Published: Aug. 8, 2024

Understanding how per- and polyfluoroalkyl substances (PFASs) enter aquatic ecosystems is challenging due to the complex interplay of physical, chemical, biological processes, as well influence hydraulic hydrological factors pollution sources at catchment scale. The spatiotemporal dynamics PFASs across various media remain largely unknown. Here we show fate transport mechanisms by integrating monitoring data from an estuarine reservoir in Singapore into a detailed 3D model. This model incorporates hydrological, hydrodynamic, water quality processes quantify distributions total PFASs, including major components perfluorooctanoate (PFOA) perfluorooctane sulfonate (PFOS), water, particulate matter, sediments within reservoir. Our results, validated against four years field measurements with most relative average deviations below 40%, demonstrate that this integrated approach effectively characterizes occurrence, sources, sinks, trends PFASs. majority are found dissolved phase (>95%), followed fractions sorbed organic particles like detritus (1.0-3.5%) phytoplankton (1-2%). We also assess potential risks both column risk quotients for PFOS PFOA <0.32 < 0.00016, respectively, indicating acceptable level body. exhibits substantial buffering capacity, even tenfold increase external loading, particularly managing associated compared PFOS. study not only enhances our understanding influencing surfactant contaminants but establishes framework future research explore dominant environmental can mitigate emerging ecosystems.

Language: Английский

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