Per- and Poly-Fluoroalkyl Substances, and Organophosphate Flame Retardants in the Upper Yangtze River: Occurrence, Spatiotemporal Distribution, and Risk Assessment

Toxics, Год журнала: 2025, Номер 13(2), С. 116 - 116

Опубликована: Фев. 1, 2025

Contaminants of Emerging Concern (CECs), including per- and polyfluoroalkyl substances (PFASs) organophosphate flame retardants (OPFRs), have raised global concerns due to their persistence, bioaccumulation potential, toxicity. This study presents a comprehensive investigation the occurrence, spatiotemporal distribution, potential sources, ecological human health risks associated with 18 PFASs 9 OPFRs in surface waters upper Yangtze River, China. The water samples were collected from main stream five major tributaries (Min, Jinsha, Tuo, Jialing, Wu Rivers) 2022 2023. total concentration ranged 16.07 927.19 ng/L, 17.36 190.42 respectively, consistently higher observed compared tributaries. Ultra-short-chain (e.g., TFMS) halogenated TCPP) predominant compounds, likely originating industrial discharges, wastewater effluents, other anthropogenic sources. Ecological risk assessments indicated low-to-moderate at most sampling sites, near discharge points. Human evaluations suggested negligible non-carcinogenic but identified carcinogenic OPFR exposure for adults specific locations, particularly Leshan city. highlights importance understanding fate impacts provides valuable insights developing targeted pollution control strategies management measures.

Язык: Английский

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Organophosphate ester flame retardants in sediments and marine fish species in Colombia: Occurrence, distribution, and implications for human risk assessment

Marine Pollution Bulletin, Год журнала: 2025, Номер 213, С. 117654 - 117654

Опубликована: Фев. 8, 2025

Exposure to organophosphate esters (OPEs) remains a significant concern, especially in aquatic systems where these compounds can bioaccumulate organisms. However, limited information exists regarding their potential health risks humans through the food web tropical ecosystems. This study investigated levels, bioaccumulation, and trophic transfer of OPEs sediments marine fish species from Cartagena Barbacoas bays, Colombia. Twenty target were quantified fish. The average concentrations ∑18OPEs ranged 2.80 115 ng/g dry weight (dw), while ∑20OPE 212 1968 lipid (lw), with highest found carnivorous species. Trophic magnification factors (TMF) for varied 11.0 25.8 such as 2-ethylhexyl diphenyl phosphate (EHDPP), 4-isopropylphenyl (4IPPDPP), tris(2-isopropylphenyl) (T2IPPP), tricresylphosphate (TCP), indicating biomagnification within web. Biota-sediment accumulation (BSAF) ∑11OPEs 0.340 4.32, showing Spearman correlation log Kow fish: Pargo chino (r = -0.78, p < 0.05), Mojarra blanca 0.79, Lisa 0.72, 0.05). suggests that bioaccumulation certain increase lipophilicity compounds. Despite findings, human risk OPE exposure via consumption was be minimal.

Язык: Английский

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Factors influencing the occurrence and distribution of organophosphate esters in sediments by cascade reservoirs of the Wujiang River in Southwest China

Acta Geochimica, Год журнала: 2025, Номер unknown

Опубликована: Фев. 19, 2025

Язык: Английский

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Adsorption–desorption properties and control mechanism of aromatic organophosphate esters on biochar–mineral complexes

Ecotoxicology and Environmental Safety, Год журнала: 2025, Номер 292, С. 117979 - 117979

Опубликована: Март 1, 2025

With the widespread application of biochar, biochar-mineral complexes are formed in large quantities environment. However, there few reports on their adsorption and desorption mechanisms for organophosphate esters (OPEs). In this study, (MBC@FH MBC@F) were prepared through co-ball-milling with biochar minerals (α-FeO(OH) Fe2O3). The properties pristine MBC@FH/F compared, adsorption-desorption OPEs all materials analyzed. results showed that have a larger specific surface area, more oxygen-containing functional groups, stronger aromaticity, pore structures, but less persistent free radicals than biochar. exhibited lower secondary kinetic rate constant (k2), higher intraparticle diffusion (k1p) capacity Hydrophobic interactions controlled TPhP TPPO complexes, π-π interactions, filling, hydrogen bonding also participated process. MBC@F had aromaticity MBC@FH, thus having MBC@FH. spatial volume inhibited its materials, demonstrating smaller amounts TPhP. was only observed TPhP, while no occurred TPPO. retention amount represented by subtracting from amount, which increased 1.22-6.98 times, reaching 4.48-41.07 mg/g. addition, hysteresis decreases increasing diameter MBC@FH/F. This study illustrated formation may be conducive to OPEs.

Язык: Английский

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Biogeochemical Impact on the Distribution Variations of Organophosphorus Flame Retardants in Estuarine Area and Insight into Climate Change

Journal of Hazardous Materials, Год журнала: 2025, Номер unknown, С. 137993 - 137993

Опубликована: Март 1, 2025

Язык: Английский

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Flame-retardant Tris(2-chloroethyl) phosphate: Assessing the effects on microalgae, mussel hemocytes and human peripheral blood cells

Environmental Research, Год журнала: 2025, Номер unknown, С. 121512 - 121512

Опубликована: Март 1, 2025

Язык: Английский

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Comprehensive assessment of the safety of bisphenol A and its analogs based on multi-toxicity tests in vitro

Journal of Hazardous Materials, Год журнала: 2024, Номер 486, С. 136983 - 136983

Опубликована: Дек. 25, 2024

Язык: Английский

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