Toxicology, Год журнала: 2024, Номер 511, С. 154019 - 154019
Опубликована: Ноя. 30, 2024
Язык: Английский
Journal of environmental chemical engineering, Год журнала: 2024, Номер 12(5), С. 113371 - 113371
Опубликована: Июнь 19, 2024
Язык: Английский
Процитировано
5
Environmental Science & Technology, Год журнала: 2023, Номер 57(38), С. 14396 - 14406
Опубликована: Сен. 11, 2023
Since the phase-out of polybrominated diphenyl ethers (PBDEs), large amounts alternative halogenated flame retardants (AHFRs) have been introduced to market. Due their persistence and toxicity, (HFRs) become a concern for ecosystem human health. However, there remains limited assessment atmospheric loadings, sources, environmental fate HFRs in Lake Ontario, which receives urban-related inputs cumulative chemical from upstream Great Lakes Canada United States. We combined long-term measurements with modified multimedia model based on site-specific parameters Ontario understand trends HFRs. All were detected air, precipitation, lake trout, herring gull egg samples throughout sampling periods. General decreasing found PBDEs, while temporal AHFRs not clear. Physical-chemical properties emissions significantly influence levels, profiles, trends. Using probabilistic modeling, HFR concentrations water sediment predicted be close measurement, suggesting good performance model. The loadings tributaries wastewater effluent primary input pathways. Transformations sedimentation estimated dominant output pathway three
Язык: Английский
Процитировано
10
Applied Clay Science, Год журнала: 2024, Номер 262, С. 107602 - 107602
Опубликована: Окт. 20, 2024
Язык: Английский
Процитировано
3
Опубликована: Янв. 14, 2025
Exploring the toxicity and evaluating risks of pollutants to ecosystems human health is an important task environmental science in twenty-first century. Due limitations cognition experimental conditions, studies have long focused on ecological effects individual typical pollutants, which not conducive achieving effective protection for environment. In this chapter, we provide a useful summary combined molecular mechanisms exposure flame retardant (FR) mixtures, presenting scientific challenges potential research directions. Current efforts been mainly devoted exploration toxic effects, but limited progress has achieved understanding mechanisms. More in-depth are needed obtain comprehensive involved FRs.
Язык: Английский
Процитировано
0
Ecotoxicology and Environmental Safety, Год журнала: 2025, Номер 291, С. 117836 - 117836
Опубликована: Фев. 1, 2025
Psoriasis risk can be affected by exposure to mixtures of environmental chemicals; however, the effect brominated flame retardants (BFRs) on self-reported psoriasis has not been assessed. Herein, we evaluated association between BFRs compounds 6 chemicals with psoriasis. Based data from National Health and Nutrition Examination Survey (NHANES) 2003-2006 2009-2014, this analysis was conducted among 6340 adults. Multivariable logistic regression, restricted cubic splines (RCS), weighted quantile sum (WQS) quantile-based g computation (Qgcomp) Bayesian kernel machine regression (BKMR) models were performed estimate associations. Our results indicated that co-exposure associated increased Notably, PBB153 emerged as a significant factor contributing psoriasis, showed non-linear relationship concentration serum prevalence Moreover, remained stable across all subgroup analyses, including those stratified gender. study presents robust evidence connecting emphasizing necessity for continued research policy interventions address health issue. Because are extensively used detected in various sources living organisms, future investigations should further elucidate mechanisms underlying observed associations risk.
Язык: Английский
Процитировано
0
Polymer Composites, Год журнала: 2025, Номер unknown
Опубликована: Апрель 3, 2025
Abstract Ethylene Vinyl Acetate (EVA) has been widely used in various industries for its excellent flexibility and corrosion resistance. However, high flammability poses significant safety risks, necessitating the incorporation of flame‐retardants to improve fire This study focuses on wet surface modification magnesium hydroxide (MH) using n‐octyl triethoxysilane (OTES). The hydrolysis products OTES react with OH MH form SiOMg bonds, thereby enhancing hydrophobicity compatibility EVA. MMH was incorporated into EVA, resulting composites were characterized XRD, SEM, TG, BET, FT‐IR, XPS. optimal conditions achieved an dosage 3 wt% at 45 °C 60 min, yielding a contact angle 142°, activation index 98.12%, oil absorption rate 43 mL/100 g. EVA/MMH demonstrated superior thermal stability flame retardancy compared unmodified Specifically, limiting oxygen (LOI) EVA/MMH‐55 reached 34.9%, it UL‐94 V‐0 rating, indicating self‐extinguishing properties. provides novel approach MH, offering practical solution enhance EVA composites. Highlights Hydrophobic is obtained by coating OTES. Contact 142° under (60 wt%) chemical reaction process between analyzed, revealing mechanism which SiOH groups intertwine hydrophobic layer. specific area reduced, good resin. LOI making nonflammable material.
Язык: Английский
Процитировано
0
The Chemical Record, Год журнала: 2025, Номер unknown
Опубликована: Апрель 7, 2025
Abstract Handling the waste associated with halogenated polymers is a daunting task due to well‐documented emission of halogen‐bearing toxicants during disposal or recycling operation. According Stockholm Convention treaty, most these products are classified as persistent organic pollutants their potential health hazards. This review aims provide holistic overview recent updates for treating polymeric through physical, chemical and biological approaches. In line inquiry, critical analysis obstacles prospects each degradation technique on polymer has been performed, assessing based efficiency, treatment upscaling, pollution control, feasibility. Though many treatments show promising results, they also entail drawbacks. Thermal exploiting various metal oxides, especially calcium additives, considered executable valorization coupled mineralization/metal extraction its intuitive operational feasibility scalability. Strategies combating soaring wastes summarized herein tap into promoting circular economy approach sustainable
Язык: Английский
Процитировано
0
International Journal of Molecular Sciences, Год журнала: 2023, Номер 24(11), С. 9281 - 9281
Опубликована: Май 25, 2023
In this study, zeolites prepared by the hydrothermal method from Ecuadorian clay were combined with precursor and semiconductor ZnTiO3/TiO2 sol-gel to adsorb photodegrade cyanide species aqueous solutions. These compounds characterized X-ray powder diffraction, fluorescence, scanning electron microscopy, energy-dispersive X-rays, point of zero charge, specific surface area. The adsorption characteristics measured using batch experiments as a function pH, initial concentration, temperature, contact time. Langmuir isotherm model pseudo-second-order fit process better. equilibrium state in reaction systems at pH = 7 was reached around 130 60 min photodegradation experiments, respectively. maximum value (73.37 mg g−1) obtained ZC compound (zeolite + clay), capacity (90.7%) under UV light TC (ZnTiO3/TiO2 clay). Finally, reuse five consecutive treatment cycles determined. results reflect that synthesized adapted extruded form could potentially be used for removal wastewater.
Язык: Английский
Процитировано
7
Applied Surface Science, Год журнала: 2023, Номер 626, С. 157206 - 157206
Опубликована: Апрель 8, 2023
Язык: Английский
Процитировано
6
Topics in Catalysis, Год журнала: 2024, Номер unknown
Опубликована: Май 16, 2024
Язык: Английский
Процитировано
2