Journal of hazardous materials advances最新文献

{"title":"Radionuclide associations in a concrete core extracted from the decommissioned hunterston A spent nuclear fuel pond","authors":"Anna E. Denman ,&nbsp;Gareth T.W. Law ,&nbsp;Thomas Carey ,&nbsp;Nicholas T. Smith ,&nbsp;Francis R. Livens ,&nbsp;Peter Quayle ,&nbsp;Aula A. Alwattar ,&nbsp;Gianni F. Vettese ,&nbsp;Joyce W.L. Ang ,&nbsp;Scott L. Heath","doi":"10.1016/j.hazadv.2025.100945","DOIUrl":"10.1016/j.hazadv.2025.100945","url":null,"abstract":"<div><div>Characterisation of a unique concrete core obtained from beneath the water level of the decommissioned Hunterston A spent nuclear fuel (SNF) storage pond has been conducted to aid understanding of long-term radionuclide contamination in nuclear infrastructure. Radionuclide contamination is primarily isolated to the protective coatings adhering to the concrete walls, with the majority of activity arising from fission products (Sr-90 and Cs-137) and actinides (Am-241 and Pu-241) as determined by gamma spectroscopy and liquid scintillation counting. Analysis of this core in vertical cross-section showed that radionuclides had penetrated through the protective layers and into the underlying, bulk concrete, with Cs-137 detected to a depth of 10 mm. X-ray diffraction (XRD), scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDX) and autoradiography suggest that Sr-90 contamination was concentrated within the cement phases, <em>via</em> interaction with calcium silicate hydrate (CSH), while Cs-137 was associated with aggregate materials, including quartz and gabbro. Decontamination experiments using cross-linked polymer hydrogels demonstrate time-dependent decontamination of the painted surface where the hydrogels were effective in removing both fission products and actinides.</div></div><div><h3>Environmental implication</h3><div>Concrete and rubble comprises up to 90 % of the volume of low level and very low level waste generated from decommissioning at nuclear sites and, in the UK, the total volume of such wastes may be as great as 4 million m³. Sentencing such wastes to the correct waste stream, in accordance with the Waste Hierarchy, potentially offers major cost and time savings, and reduced environmental impact. This study provides insight into the long-term contamination of concrete infrastructures and highlights how hydrogels can be used to reduce the volume of intermediate level waste generated during decommissioning operations.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"21 ","pages":"Article 100945"},"PeriodicalIF":7.7,"publicationDate":"2025-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145618466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biochar derived from spent mushroom substrate for efficient atrazine removal in aqueous solution","authors":"Yuhang Sun ,&nbsp;Ping Han ,&nbsp;Jing Li ,&nbsp;Qi Gao ,&nbsp;Mingyu Zhao ,&nbsp;Kai Wang ,&nbsp;Zhan Wang ,&nbsp;Ercheng Zhao ,&nbsp;Hongtao Zou ,&nbsp;Junxue Wu","doi":"10.1016/j.hazadv.2025.100951","DOIUrl":"10.1016/j.hazadv.2025.100951","url":null,"abstract":"<div><div>Given its extensive global usage and environmental persistence conferred by the stable triazine ring structure, the frequent detection of atrazine (ATZ) in the environment poses ecological and health risks. Spent mushroom substrate (SMS), as a widely available and low-cost agricultural waste, and its lignocellulosic composition and inherent porosity are conducive to generating highly aromatic and porous biochar structures for adsorbing ATZ. This study pioneeringly prepared biochar (BC) and acid-treated BC derived from SMSs of <em>Pleurotus ostreatus, Oudemansiella apalosarca</em>, and <em>Lentinula edodes</em>) via pyrolysis at 800 °C. Comprehensive characterization confirmed that the physicochemical properties of BC were significantly influenced by feedstock origin and acid treatment. Acid treatment improved specific surface area, porosity, and aromaticity, and alongside reduced hydrophilic ash content. Batch experiments indicated that acid-treated BC improved ATZ adsorption efficiency with removal rates increasing by 3.5–5.6 times, following the order of APBC (98.2 %) &gt; AOBC (38.4 %) &gt; ALBC (27.1 %). Adsorption kinetics and isotherms indicated heterogeneous surface interactions and multi-mechanism involvement. The elevated log<em>K</em>_OC values of acid-treated BC reflected stronger affinity for ATZ on organic carbon-enriched sites. Mechanistic analysis quantified four dominant pathways with distinct contribution ranges of pore filling (2.2–42.4 %), hydrophobic partitioning (2.2–47.2 %), π–π electron donor-acceptor interactions (15.6–49.8 %), and hydrogen bonding (0.9–35.0 %). Thermodynamic studies revealed spontaneous, endothermic, and entropy-driven adsorption processes, and adsorption capacity of ATZ was favored under acidic and high-temperature conditions. These findings not only offer a solution for agricultural byproducts SMSs reuse into high-efficiency adsorbents through pyrolysis and acid modification but also establish a method to mitigate pesticide contamination in aqueous systems.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"21 ","pages":"Article 100951"},"PeriodicalIF":7.7,"publicationDate":"2025-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145594790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sustainable leaching of nickel and cobalt from asbestos waste using deep eutectic solvents: Kinetic modeling and recovery performance","authors":"Rustam Sharipov ,&nbsp;Assel Dagubayeva ,&nbsp;Galymzhan Maldybayev ,&nbsp;Mohamad Nasir Mohamad Ibrahim ,&nbsp;Omirserik Baigenzhenov ,&nbsp;Tiancheng Mu","doi":"10.1016/j.hazadv.2025.100948","DOIUrl":"10.1016/j.hazadv.2025.100948","url":null,"abstract":"<div><div>A sustainable hydrometallurgical route was developed for the selective recovery of nickel and cobalt from asbestos production waste using a novel deep eutectic solvent (DES) composed of ethylene glycol and hydroxylamine hydrochloride. Magnetic separation yielded a Ni–Co-enriched fraction with a 10–12-fold increase in target metal content relative to the raw waste, as confirmed by WD-XRF, SEM/EDS, and chemical analysis. Under optimized conditions (80 °C, 4 h, L/S = 4:1), leaching efficiencies of 72.4 % for Ni and 79.6 % for Co were achieved, while co-dissolution of Fe, Mg, and Si remained below 8 %, demonstrating exceptional selectivity. Kinetic analysis revealed a dual-control mechanism: the excellent fit to the Prout–Tompkins model (R² &gt; 0.99) reflects autocatalytic, ligand-assisted surface reactions driven by Ni^2+/Co²⁺ coordination with DES components, whereas the low activation energies (15.73 kJ/mol for Ni, 13.68 kJ/mol for Co) and strong agreement with the Jander diffusion model indicate that mass transfer through the evolving porous residue governs the overall rate. Critically, ¹H NMR spectroscopy of the spent DES shows pronounced signal broadening and attenuation due to paramagnetic Ni^2+/Co²⁺ ions, providing direct, solution-phase evidence of metal - ligand complexation - a key advancement over indirect FTIR data alone. Complementary SEM and XRD analyses confirm selective phase dissolution without bulk matrix degradation. These results establish the DES as an environmentally benign, ligand-functionalized leaching medium that enables the valorization of hazardous asbestos waste into a secondary source of critical metals, aligning with green and circular hydrometallurgical principles.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"21 ","pages":"Article 100948"},"PeriodicalIF":7.7,"publicationDate":"2025-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145618469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Source appointment, chemical impacts and health risk of volatile organic compounds in an industrial park in Zibo, China","authors":"Lin Sun ,&nbsp;Wenge Zhang ,&nbsp;Wenyu Bai ,&nbsp;Hao Gan ,&nbsp;Bo Xu ,&nbsp;Jing Wang ,&nbsp;Yanhui Liu ,&nbsp;Chunmei Geng ,&nbsp;Wen Yang","doi":"10.1016/j.hazadv.2025.100944","DOIUrl":"10.1016/j.hazadv.2025.100944","url":null,"abstract":"<div><div>Volatile Organic Compounds (VOCs) are priority tropospheric pollutants, characterized by high chemical reactivity and adverse health effects. Industrial emission is a major VOC source, yet studies on its characteristics in industrial parks within Zibo remain limited. This research investigates VOC emissions at two sites (X1 and X2) within an industrial park in Zibo during the summer of 2021, focusing on their sources, chemical impacts, and health risks. Mobile, petrochemical industry and solvent usage were identified as the predominant anthropogenic contributors at both sites. Alkene (X1: 54.71 ppbv, X2: 48.94 ppbv) was the key ozone precursor, and petrochemical industry was the largest contributor to ozone formation (X1: 33.83 ppbv, X2: 40.10 ppbv). As a typical tracer of biogenic emissions and a key contributor to ozone formation, our identification of significant industrial isoprene emissions suggests the potential for its anthropogenic regulation. Health risk assessment revealed acrolein and 1,3-butadiene as the dominant contributors to non-carcinogenic risk (expressed by hazard ratio, X1: 8.62, X2: 4.19) and carcinogenic risk (expressed by lifetime cancer risk, X1: 2.12×10⁻⁵, X2: 2.38×10⁻⁵), respectively. Solvent usage (hazard ratio: 4.76, lifetime cancer risk:1.70×10⁻⁵) contributed most at X1, while petrochemical industry (hazard ratio: 2.45, lifetime cancer risk:3.35×10⁻⁵) was the largest contributor at X2. These findings underscore the need for source-specific mitigation strategies to effectively mitigate ozone and alleviate health risks in industrial regions.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"21 ","pages":"Article 100944"},"PeriodicalIF":7.7,"publicationDate":"2025-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145685542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent advances on photocatalytic geopolymer on the degradation of organic pollutants: A review","authors":"Noorulayuni Atiqah Yaacob ,&nbsp;Mohd Mustafa Al Bakri Abdullah ,&nbsp;Liew Yun Ming ,&nbsp;Shafiq Ishak ,&nbsp;Petrica Vizureanu ,&nbsp;Harun Tanyildizi ,&nbsp;Thanongsak Imjai ,&nbsp;Mohamad Anuar Kamaruddin ,&nbsp;Rosnita Mohamed","doi":"10.1016/j.hazadv.2025.100946","DOIUrl":"10.1016/j.hazadv.2025.100946","url":null,"abstract":"<div><div>The widespread occurrence of organic pollutants, particularly antibiotic and dye residues, in both aquatic and terrestrial ecosystems pose a significant environmental threat and contributes to the concerning increase in human health risks. Often, these persistent contaminants are not eliminated by conventional water treatment methods. Thus, the effective management of organic pollutants in water is indeed a complex and ongoing issue, requiring significant attention from academic researchers. Indeed, geopolymer-based photocatalysts have gained popularity as a promising and eco-friendly approach for the treatment of organic pollutants in water in recent years. However, despite the growing interest, literature details on the application of geopolymer in photodegradation of organic pollutants is insufficient. Therefore, this review highlights the recent advancements in the development of geopolymer-based photocatalysts on organic pollutants degradation and the geopolymerization process. In addition, the operational parameters influencing photocatalytic degradation such as effect of pH, catalyst dosage, and initial concentration of pollutants are briefly reviewed to highlight the significance of the parameters that critically impacted the photocatalytic degradation efficiency. The fundamental mechanism of organic pollutants, recent advances, and practical application of photocatalytic degradation are also discussed. This would aid in setting the trajectory for providing references on efficient geopolymer-based photocatalysts, establishing new insights and potential applications for effective wastewater remediation.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"21 ","pages":"Article 100946"},"PeriodicalIF":7.7,"publicationDate":"2025-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145618467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of arsenic exposure through dietary sources and drinking water in Gallbladder cancer patients of Bihar","authors":"Shivam Kumar ,&nbsp;Arun Kumar ,&nbsp;Megha Sharma ,&nbsp;Kanhaiya Kumar ,&nbsp;Manishankar Kumar ,&nbsp;Dhruv Kumar ,&nbsp;Akhouri Bishwapriya ,&nbsp;Maiko Sakamoto ,&nbsp;Ashok Kumar Ghosh","doi":"10.1016/j.hazadv.2025.100947","DOIUrl":"10.1016/j.hazadv.2025.100947","url":null,"abstract":"<div><div>In the recent times, there has been significant rise in the Gallbladder cancer (GBC) incidences globally. The present study examines the relationship between dietary arsenic exposure and GBC risk in n=141 inhabitants of Bihar. A total of n=705 samples were collected from n=141 subject’s households which included rice, wheat, pulse, potato and their household water samples. The study revealed that 11% of rice samples, 2% of potato samples, 6% of pulse samples, and 33% of wheat samples exceeded FAO permissible limits (200 µg/kg for rice, potatoes, and pulses; 100 µg/kg for wheat), with maximum concentrations of 574.8 µg/kg, 912 µg/kg, 267.2 µg/kg, and 376.4 µg/kg, respectively. Additionally, 21% of 141 handpump water samples had arsenic concentration more than the WHO limit of 10 µg/L, with maximum concentration as 91.6 µg/L. Health risk assessments indicated significant non-carcinogenic (Hazard Quotient &gt; 1) and carcinogenic (Cancer Risk &gt; 1 × 10⁻⁶) risks, with rice emerging as the primary dietary contributor, followed by wheat, while pulses and potatoes posed lower risks. Pearson correlation coefficients (r = 0.2590–0.4446, p &lt; 0.01) among staple food consumptions. In the present study, the human health risk assessment based on food samples showed that 17.73% of wheat samples exceeded the non-carcinogenic risk limit, and 58.15% exceeded the carcinogenic risk limit. Similarly, for rice samples, 39% of the exposed population showed potential non-carcinogenic risk, while 59.57% were at risk of carcinogenic effects. Rice showed the highest non-carcinogenic (HQ) and carcinogenic (CR) risks, with HQ values frequently exceeding the threshold of 1 and CR values surpassing the acceptable safety limit (1 × 10⁻⁶). This establishes rice as the primary dietary contributor to arsenic-related gallbladder cancer risk in the study population. Wheat presented moderate risk, with some HQ values exceeding 1 and CR values approaching the risk boundary, suggesting a secondary but significant contribution. In contrast, pulses demonstrated very low HQ and CR values, both well within safe limits, indicating negligible health risk from arsenic exposure through this food group. Overall, these findings highlight rice as the dominant dietary source of arsenic exposure among gallbladder cancer patients, followed by wheat, while pulses and potatoes pose comparatively lower risks. The study emphasizes the need for continuous biomonitoring and public health interventions, including safe irrigation and dietary diversification, to mitigate GBC risk in this arsenic-endemic region, with further research required to understand the impact of other confounding risk factors.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"21 ","pages":"Article 100947"},"PeriodicalIF":7.7,"publicationDate":"2025-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145618470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Trends in quality and risk assessment applicability of microplastic ecotoxicity studies","authors":"Stephanie B. Kennedy ,&nbsp;Ana L. Antonio Vital ,&nbsp;Anna Kukkola ,&nbsp;Ezra Miller ,&nbsp;Andrew Yeh ,&nbsp;Scott Coffin ,&nbsp;Towsif K. Ahmed ,&nbsp;Lidwina Bertrand ,&nbsp;Andrew Barrick ,&nbsp;Win Cowger ,&nbsp;Magdalena M. Mair ,&nbsp;Darragh Doyle","doi":"10.1016/j.hazadv.2025.100942","DOIUrl":"10.1016/j.hazadv.2025.100942","url":null,"abstract":"<div><div>The Toxicity of Microplastics Explorer 2.0 (ToMEx 2.0) aquatic organism database contains 286 microplastic ecotoxicity studies that have been scored for quality and applicability to risk assessment. The overall reporting quality of microplastic effects studies was assessed, and the relationships between quality scores and various factors, including time, taxonomic group were evaluated. Data uploaded into ToMEx were first evaluated against quality assurance and quality control criteria for the requirements of the database. Each study was given at least three total scores related to: technical quality, applicability to risk assessment, and overall study quality, which is the sum of scores for all criteria. While most studies reliably reported technical criteria, the majority of studies were not rated as applicable to risk assessment. Overall, study quality scores and reporting of technical criteria have not changed over time. However, a weak but significant decline in applicability to risk assessment was observed over time. Additionally, there was a weak, significant positive trend between study quality score and journal impact factors, but no significant correlation between study quality and whether a study found a significant effect. Quality scores varied significantly depending on species, with fish studies generally having lower risk applicability criteria scores and studies with crustaceans, molluscs, and annelids generally having higher scores. This analysis highlights uncertainties underlying the current state of knowledge regarding microplastic ecotoxicity, data gaps in the microplastic ecotoxicity literature, and provides a framework for assessing aggregated microplastic ecotoxicity data quality and their applicability to risk assessment.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"21 ","pages":"Article 100942"},"PeriodicalIF":7.7,"publicationDate":"2025-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145618468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Does tourism enhance microplastic pollution in the ecologically critical areas of Bangladesh? Evidence from Tanguar Haor, Kaptai Lake, and the Sundarbans","authors":"Md.Anamul Hassan,&nbsp;D.M.Salah Mahmud,&nbsp;Mashura Shammi,&nbsp;Shafi M. Tareq","doi":"10.1016/j.hazadv.2025.100929","DOIUrl":"10.1016/j.hazadv.2025.100929","url":null,"abstract":"<div><div>Microplastic (MP) pollution is a growing environmental threat, particularly in ecologically sensitive and biodiverse aquatic ecosystems. This study assessed the abundance, composition, and potential sources of MPs at three prominent tourist destinations in Bangladesh: Tanguar Haor, Kaptai Lake, and Sundarbans. A total of 60 surface water samples (20 per site) were collected and analyzed using density separation followed by visual identification. The results showed that the abundance of MPs in the Sundarbans was 23.25 ± 2.55 particles/L, followed by Kaptai Lake at 12.00 ± 1.22 particles/L, and Tanguar Haor at 9.42 ± 1.10 particles/L. The polymer types were confirmed using Fourier-transform infrared (FTIR) spectroscopy, with polyethylene terephthalate being common across all locations. Environmental risk was evaluated using multiple indices including the Pollution Load Index (PLI), Polymeric Risk Assessment (PRA), Pollution Risk Index (PRI), and Polymeric Hazard Index (PHI), which indicate varying levels of ecological threat. These findings highlight the influence of tourism and associated anthropogenic activities on MP contamination in these ecologically critical areas. This study emphasizes the urgent need to promote eco-tourism, implement targeted mitigation strategies, improve waste management, and establish long-term monitoring programs to protect vulnerable ecosystems from increasing MP pollution.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"21 ","pages":"Article 100929"},"PeriodicalIF":7.7,"publicationDate":"2025-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145594506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Intelligent feature elimination via Monte Carlo approach for machine learning-based groundwater nitrate prediction and health risk assessment","authors":"Mahmood Yousefi ,&nbsp;Vahide Oskoei ,&nbsp;Ali Oghazyan ,&nbsp;Ahmad Khosravi ,&nbsp;Mansour Baziar","doi":"10.1016/j.hazadv.2025.100927","DOIUrl":"10.1016/j.hazadv.2025.100927","url":null,"abstract":"<div><div>This study presents a Monte Carlo Feature Selection (MCFS) approach for predicting nitrate concentrations in groundwater, utilizing predefined randomized subsets of five features and applying the ExtraTrees regression algorithm. Feature selection is governed by stringent criteria, including an R² performance threshold and feature occurrence frequency. The approach enhanced prediction accuracy by 8 % and achieved a 50 % reduction in the number of input features. Among the variables, bicarbonate (HCO₃⁻) was identified as the most influential, appearing in 66.4 % of the high-performing feature subsets. An analysis of 147 groundwater samples collected from 12 sites indicated considerable health risks for infants and children, as evidenced by HQ values exceeding 1(HQ &gt; 1). Among the five evaluated models of AdaBoost, Random Forest, Extra Trees, Decision Tree, and CatBoost, the Extra Trees algorithm exhibited the highest predictive performance, maintaining an R² of approximately 0.98 both prior to and following feature selection, thereby validating the robustness of the employed method. The optimized model preserved only the most consistently selected features, achieving a high level of predictive accuracy.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"20 ","pages":"Article 100927"},"PeriodicalIF":7.7,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145466612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Environmental microplastics accumulate in gonads in a sex-dependent manner and alter reproductive success in zebrafish (Danio rerio)","authors":"Andry Ny Aina Rabezanahary ,&nbsp;Baptiste Ducarme ,&nbsp;Andriamalala Rajoelisoa ,&nbsp;Yves Jean Michel Mong ,&nbsp;Aala Azari ,&nbsp;Manosij Ghosh ,&nbsp;Peter H.M. Hoet ,&nbsp;Hugo B. Muller ,&nbsp;Gauthier Eppe ,&nbsp;Benoît Bernay ,&nbsp;Ranjàna Hanitra Randrianarivo ,&nbsp;Patrick Kestemont ,&nbsp;Omayma Missawi ,&nbsp;Valérie Cornet","doi":"10.1016/j.hazadv.2025.100923","DOIUrl":"10.1016/j.hazadv.2025.100923","url":null,"abstract":"<div><div>Microplastics (MPs) are increasingly associated with physiological disruptions in aquatic organisms, yet the biological responses to environmentally sourced particles remain underexplored. This study investigated the reproductive toxicity of environmentally derived MPs collected from the Ikopa River (Antananarivo, Madagascar) in Danio rerio. Zebrafish were chronically exposed to cryomilled riverine MPs (1.2–50 µm) at concentrations of 100 and 1000 µg/L for 66 days, with daily reproductive assessments conducted over the final 21 days in accordance with OECD Test Guideline 229. Microplastic accumulation in gonadal tissue was assessed, along with subcellular responses via enzymatic assays in gonads and proteomic profiling in liver samples. Reproductive toxicity was evaluated through gonadal histology, fecundity, and fertility rates. MPs accumulated in gonads in a sex- and concentration dependent manner, with the highest levels in males exposed to 1000 µg/L (177.88 ± 102.65 particles/mg tissue, mean ± SD, <em>n</em> = 4). Despite MPs accumulation, no histopathological lesions were observed. However, significant oxidative stress and energy metabolism disruptions were identified in the liver, suggesting hepatic dysfunction as a potential driver of reproductive impairments. Furthermore, six polychlorinated biphenyl (PCB) congeners ranging from dozens to hundreds of ng/g MPs, and seven polybrominated diphenyl ether (PBDE) congeners in the range of a few ng/g MPs were detected on MPs surfaces, which may exacerbate toxicity via apoptosis inhibition. These findings provide novel mechanistic insights into how environmentally relevant MPs impair reproductive function in fish. The results underscore the necessity of incorporating environmental microplastics into toxicity testing frameworks to ensure accurate ecological risk assessment.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"20 ","pages":"Article 100923"},"PeriodicalIF":7.7,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145416490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}