Microplastics unveiled: Understanding their toxicological impact on terrestrial ecosystems

iScience, Journal Year: 2025, Volume and Issue: 28(2), P. 111879 - 111879

Published: Jan. 22, 2025

Microplastics (MPs), defined as plastic debris, smaller than <5 mm, are viewed persistent contaminants that significantly modify terrestrial ecosystems and biodiversity by altering soil microbiota, structure, functions. This paper summarizes MPs' interactions with various pollutants, including heavy metals pesticides, also addressing socio-economic impacts, such reduced agricultural yields threats to regional fisheries. The study emphasizes the need for an on basis of waste management model mitigate these effects, advocating collaborative efforts among stakeholders. Also, interdisciplinary studies incorporating material sciences, ecology, environmental policy essential confront challenges MPs ecological services. Additionally, review highlights how can serve vectors toxins damage health species survival. overview underscores a complex interplay between systems, urgency harnessing pollution protecting ecosystem integrity sustainability.

Language: Английский

Degradation of Diclofenac by Bisulfite Coupled with Iron and Manganous Ions: Dual Mechanism, DFT-Assisted Pathway Studies, and Toxicity Assessment

Water, Journal Year: 2024, Volume and Issue: 16(14), P. 1994 - 1994

Published: July 14, 2024

Diclofenac (DCF) is often detected in diverse aquatic bodies, and ineffective management can lead to detrimental effects on human health ecosystems. In this study, degradation of DCF by Fe(III) Mn(II) activating bisulfite (BS) was investigated. the Fe(III)/Mn(II)/BS system, 93.4% degraded at 200 μM BS within 120 s, additional research 1000 achieved 88.4% efficacy. Moreover, kinetics fitting with different concentrations studied find two highest reaction rates (200 μM, kobs = 0.0297 0.0317 s−1, respectively). Whereafter, SO4•− Mn(III) were identified as main active species these concentrations, respectively. Density functional theory (DFT) calculations, molecular frontier orbital theory, surface electrostatic potential (ESP) forecast electrophilic attack sites. pathways radical non-radical ways proposed site prediction thirteen intermediates UPLC-QTOF-MS. ECOSAR software 2.2 used for toxicity assessment. This work process presence BS, providing a new insight into water purification.

Language: Английский

Natural attenuation of pharmaceuticals and personal care products percolating through rocky substrates – an example based on the Káraný waterworks

EUROPEAN JOURNAL OF ENVIRONMENTAL SCIENCES, Journal Year: 2024, Volume and Issue: 14(1), P. 49 - 58

Published: June 24, 2024

This survey focused on a detailed analysis of the ability fluvial Quaternary sediments to remove pharmaceuticals and personal care products (PPCPs) from drinking water. Thirty-eight PPCPs were detected in Jizera River, which is used after infiltration produce water by Káraný waterworks. Several occurred at concentrations exceeding 100 ng/l, some are not possible (oxypurinol, acesulfame). The presence was monitored during passage through sandy gravels receiving well (total distance 180 m) monthly intervals 2022–2023. can be divided into different groups based results. Iohexol, iopromide, metoprolol, cetirizine, valsartan clarithromycin already below established threshold passing 60 m gravel. Other substances gradually attenuated diverse group remained groundwater even subsoil. Surprisingly, PPCP with high degree attenuation, such as metformin, whose concentration drops original value 677 ng/l 16 this group. member lowest attenuation sulfamethoxazole 9%. Five (benzotriazole, propylparaben, bisphenol S, hydrochlorothiazide, ibuprofen-2-hydroxy) identified most problematic since they passed quaternary aquifer practically unchanged process qualitative treatment using artificial appears ineffective.

Language: Английский