Journal of hazardous materials advances最新文献

{"title":"Surface tuning strategy: Functionalized carbon cloth as flexible and disposable sensor for 4-nitrophenol","authors":"Ganesh Pattan-Siddappa ,&nbsp;Saheed E. Elugoke ,&nbsp;Yong Hae Heo ,&nbsp;Sang-Youn Kim ,&nbsp;Eno E. Ebenso","doi":"10.1016/j.hazadv.2026.101022","DOIUrl":"10.1016/j.hazadv.2026.101022","url":null,"abstract":"<div><div>Herein, flexible and disposable electrochemical sensor for 4-Nitrophenol (4-NP) was fabricated through the surface oxygen functionalization of a bare carbon cloth electrode (BCCE). The oxygen-functionalized carbon cloth electrode (OFCCE) and the BCCE were characterized with X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). OFCCE showed higher electronic conductivity and greater electrocatalytic activity for 4-NP reduction than the BCCE. The limit of detection (LOD) of 4-NP at OFCCE was 12.45 nM within a linear dynamic range of 0.16 – 2.65 μM. The percentage recovery of 4-NP from tap water at OFCCE was within the range of 97.80 – 100.73 %. OFCCE demonstrated outstanding anti-interference properties in the presence of notable interferons in addition to its remarkable 92 % peak current retention after 25 days of regular 4-NP electroanalysis at 5 days interval. The low detection limit, good shelf-life and the ease of fabricating OFCCE confirm its suitability for routine 4-NP electroanalysis in water samples.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"21 ","pages":"Article 101022"},"PeriodicalIF":7.7,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146022487","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":"The impact of interaction between particulate matter and sunlight duration on neonatal hyperbilirubinemia","authors":"Jing-Jing Xu ,&nbsp;Cheng Li ,&nbsp;Si-Wei Zhang ,&nbsp;Yanhui Hao ,&nbsp;He-Feng Huang ,&nbsp;Xia Meng ,&nbsp;Haidong Kan ,&nbsp;Yan-Ting Wu","doi":"10.1016/j.hazadv.2026.101021","DOIUrl":"10.1016/j.hazadv.2026.101021","url":null,"abstract":"<div><div>While the associations among particulate matters (PMs) exposure and neonatal hyperbilirubinemia (NHB) have been studied, the potential protective effect role of perinatal sunlight exposure and its interaction with PMs on NHB remains unclear. Thus, we designed this study to investigate the impact of maternal PMs exposure and sunlight duration on NHB. We included 155,970 pregnant women and their singleton newborns (without ABO hemolytic disease) from two major obstetric hospitals in Shanghai. Generalized linear models were used to evaluate the effects of PM_2.5, PM₁₀, and PM_2.5–10, daily sunlight duration, and their interactive effects on NHB during different periods throughout the pregnancy. Our findings reveal that the risk of NHB was associated with increased exposure levels of PM_2.5–10 (aOR: 1.081; 95%CI: 1.022, 1.144) and PM₁₀ (aOR: 1.046; 95%CI: 1.018, 1.074) and decreased sunlight duration (aOR: 0.900; 95%CI: 0.870, 0.932) during the 3^rd trimester. While NHB was not directly linked to PM_2.5 exposure alone (aOR: 1.025, 95%CI: 0.988, 1.063), we identified a significant interaction between reduced sunlight duration and increased PM_2.5 exposure during the 3^rd trimester (P _{for interaction}&lt;0.001), as well as with PM_2.5–10 (P _{for interaction}=0.030) and PM₁₀ (P _{for interaction}=0.032). In conclusion, increased PM_2.5–10 and PM₁₀ exposure and decreased sunlight duration during late pregnancy were associated with NHB. Moreover, reduced sunlight duration had an interactive effect with increased concentrations of PM_2.5, PM₁₀, and PM_2.5–10 on the incidence of NHB. Therefore, mitigating PMs exposure and ensuring adequate sunlight during pregnancy may help reduce the incidence of NHB.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"21 ","pages":"Article 101021"},"PeriodicalIF":7.7,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146022377","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":"High-efficiency glufosinate ammonium degradation by Dunaliella salina: Discovery and preliminary mechanistic insights","authors":"Xuehua Liu ,&nbsp;Xue Li ,&nbsp;Wenhui Gu ,&nbsp;Kun Sun ,&nbsp;Yuechang Li ,&nbsp;Xi Qiang ,&nbsp;Lijun Wang ,&nbsp;Xiujun Xie ,&nbsp;Shan Gao ,&nbsp;Xulei Wang ,&nbsp;Li Huan ,&nbsp;Qi Qiu ,&nbsp;Guangce Wang","doi":"10.1016/j.hazadv.2026.101029","DOIUrl":"10.1016/j.hazadv.2026.101029","url":null,"abstract":"<div><div>Glufosinate ammonium (GA), a widely used organophosphorus herbicide, poses significant environmental risks due to its high solubility and chemical stability. Once introduced into aquatic ecosystems via surface runoff, GA can accumulate and persist, particularly in hypersaline environments. This study explores the biodegradation efficiency and underlying mechanisms of GA degradation by <em>Dunaliella salina</em> under hypersaline conditions. The findings revealed that <em>D. salina</em> exhibited a maximum GA tolerance of 0.8 mg/mL and effectively reduced GA concentrations from 0.194 mg/mL to 0.016 mg/mL within three days, achieving a degradation efficiency of 91.74 %. Notably, the GA degradation efficiency of <em>D. salina</em> displayed a broad salinity tolerance, with degradation rates being influenced by cell density and light intensity. Exposure to GA induced acetyltransferase-related, phosphinothricin acetyltransferase (PAT)-immunoreactive signals in <em>D. salina</em>, suggesting the involvement of GA-responsive acetyltransferase-associated processes. In addition, physiological assays, nutrient utilization experiments, transcriptomic analyses, and phosphate-dynamics measurements indicate that <em>D. salina</em> can utilize GA as a phosphorus source, potentially involving carbon–phosphorus bond cleavage. Transcriptomic profiling further identified coordinated regulation of genes related to glutamine metabolism, antioxidant defense, polyamine biosynthesis, and carbohydrate metabolism, reflecting adaptive metabolic responses to GA-induced stress. Collectively, this study provides the first evidence that <em>D. salina</em> can reduce GA toxicity in hypersaline environments. Multiple biological responses, including GA-derived phosphorus utilization and acetyltransferase-related stress responses, play an important role in GA degradation. These findings advance our understanding of the adaptive metabolic network of <em>D. salina</em> and offer foundational insights for developing bioremediation strategies for herbicide-contaminated saline water bodies.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"21 ","pages":"Article 101029"},"PeriodicalIF":7.7,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147381607","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":"Comprehensive profiling of metal compound toxicity: potential novel targets and mechanistic insights using Tox21 screening.","authors":"Masato Ooka, Precious Adesina, Vishakha Goyal, Jinghua Zhao, Shuaizhang Li, Gabrielle Feldman, Charlotte TeKrony, Dvir Blivis, Majid Harouni, Matthew D Hall, Stephen S Ferguson, David Reif, Ty Voss, Ruili Huang, Menghang Xia","doi":"10.1016/j.hazadv.2026.101063","DOIUrl":"10.1016/j.hazadv.2026.101063","url":null,"abstract":"<p><p>Metals and metalloids are widely used in industrial applications, and increasing experimental and epidemiological evidence has linked metal exposure to adverse health outcomes. However, the underlying mechanisms for these effects have not been fully understood. As a part of the Toxicology in 21^st century (Tox21) program, we have screened more than 150 metal-containing compounds and their salt forms across over 90 biological endpoints. In this study, we analyzed the comprehensive toxicity of metal compounds using Tox21 screening data to enhance the understanding of their mechanism and molecular pathways involved in molecular initiating events. Integrated data analysis and <i>in vitro</i> confirmation experiments identified three potential novel targets of metal compounds (i.e., sonic hedgehog pathway, thyroid-stimulating hormone receptor, and thyrotropin-releasing hormone receptor). We also found that mercury- and tin-containing substances were highly bioactive. Furthermore, cell painting analysis uncovered metal-induced bioactivity could be classified into two patterns depending on their respective associations to mitochondrial-related morphology changes. Our results provide a comprehensive analysis of metals-association bioactivity data within Tox21 assays, which can be applied to estimate the potency ranges for metal-induced bioactivity that support risk assessment efforts for metal and metalloid exposures. These findings identify previously undercharacterized molecular targets of metal compounds, offering new insights into mechanisms of metal toxicity and informing improved risk assessment methodologies.</p>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"21 ","pages":""},"PeriodicalIF":9.1,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13567650/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148957528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Removal of tetracycline from water using immobilized laccase on polyvinyl alcohol-gum Arabic hydrogel nanocomposites","authors":"Naghmeh Taghizadeh ,&nbsp;Shohreh Ariaeenejad ,&nbsp;Elaheh Motamedi","doi":"10.1016/j.hazadv.2025.100954","DOIUrl":"10.1016/j.hazadv.2025.100954","url":null,"abstract":"<div><div>This study explored the synthesis of the hydrogel nanocomposite based on gum Arabic (GA) and polyvinyl alcohol (PVA) reinforced with Fe₂O₃ nanoparticles incorporated onto nanocellulose (NC-Fe). The water absorbencies of the hydrogels varied from 33.1 to 217.1 g/g, depending on Fe/NC and cross-linker content, as well as PVA molecular weight. The SEM images of the hydrogels revealed that the presence of Fe/NC led to smaller pores in the hydrogel matrix (i.e., pore size range of 6.9–50 µm in hydrogel nanocomposite vs. 8.3–63.3 μm in the pristine hydrogel). The immobilization of a metagenomic laccase (PersiLac3) onto the hydrogels provided an efficient, innovative, and multi-functional system for the removal of the antibiotic tetracycline (TC) from water. Immobilizing PersiLac3 on both the pristine hydrogel (PVA-GA-hydrogel) and the hydrogel nanocomposite (PVA-GA-hydrogel/NC-Fe) remarkably boosted its performance in TC removal compared to the free enzyme. At an initial TC concentration of 500 mg/L, the maximum removal reached 83 %, 67 %, and 38 % for PersiLac3@PVA-GA-hydrogel/NC-Fe, PersiLac3@PVA-GA-hydrogel, and the free PersiLac3, respectively, within 60 min. Moreover, the TC removal performance of the neat hydrogels (48 % for PVA-GA-hydrogel/NC-Fe and 17 % for PVA-GA-hydrogel) suggested that the antibiotic was eliminated through the combined processes of adsorption by the hydrogels and enzymatic degradation by PersiLac3. Addition of NC-Fe in the hydrogel played a bi-functional role in TC removal: it reduced the pore size, thereby increasing TC sorption by the hydrogel, and it acted as a Fenton-like catalyst in TC degradation. Finally, the immobilized enzyme demonstrated superior stability in harsh environments compared to the free enzyme, removing 70 % of TC after six consecutive runs. This is the first report on the potential application of the bio-based PVA–GA/Fe–NC hydrogel as a robust, reusable, and eco-friendly carrier for metagenomic laccase in antibiotic degradation, offering a novel strategy for sustainable water treatment.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"21 ","pages":"Article 100954"},"PeriodicalIF":7.7,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145685541","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":"Synthesis and characterization of gamma irradiated magnetic biochar derived from rice straw and grafting with (acrylic acid-co-acrylamide) hydrogel for removing methylene blue dye","authors":"Ramy S. Elnagar ,&nbsp;Taha M.A. Razek ,&nbsp;Hagar A. Nawar ,&nbsp;Sherif F. Mohamed","doi":"10.1016/j.hazadv.2025.100998","DOIUrl":"10.1016/j.hazadv.2025.100998","url":null,"abstract":"<div><div>In this study, acid-activated biochar derived from rice straw was combined with Fe₃O₄ nanoparticles using the co-precipitation method, followed by grafting with acrylic acid (AAc) and acrylamide (AAm) at different monomer ratios of 70:30 (RS4), 50:50 (RS5), and 30:70 (RS6) by ⁶⁰Co gamma irradiation at a dose of 15 kGy. The aim was to develop magnetic copolymer hydrogel adsorbents with enhanced swelling properties and capacity for methylene blue (MB) dye removal. The synthesized adsorbents were thoroughly characterized using FTIR, Raman spectroscopy, XRD, SEM–EDX, TEM, VSM, BET analysis, zeta potential measurements, and particle size distribution (PSD). The maximum adsorption capacities (qmax) were 467.31 mg/g (RS4), 478.82 mg/g (RS5), and 271.73 mg/g (RS6) under optimal conditions of 180 min contact time, a temperature of 25 °C, an adsorbent dosage NN of 25 mg, pH 7, and a 100 mg/L initial dye concentration. Kinetic data was best fitted by the nonlinear pseudo-second order (PSO) model, indicating that adsorption was primarily governed by the availability of active sites. The Freundlich isotherm provided a better fit for RS4 and RS5, suggesting heterogeneous multilayer adsorption, whereas RS6 followed the Langmuir isotherm, reflecting a more uniform surface. Thermodynamic parameters (ΔH, ΔS, and ΔG) confirmed that the adsorption process was spontaneous and endothermic. The findings demonstrate that tuning the AAc/AAm ratio during γ-irradiation is an effective method for optimizing the structural and adsorption properties of magnetic biochar hydrogel composites for efficient dye removal.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"21 ","pages":"Article 100998"},"PeriodicalIF":7.7,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145924656","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":"Anthropogenic footprint and ecological risk assessment of organochlorine pesticides and polychlorinated biphenyls in sediments from Lake Victoria, East Africa","authors":"Afuwa Kagoya ,&nbsp;Kenneth Arinaitwe ,&nbsp;Silver Odongo ,&nbsp;Douglas Sifuna ,&nbsp;Henry Matovu ,&nbsp;Julius Matsiko ,&nbsp;Godfrey Muhwezi ,&nbsp;Ivan Špánik ,&nbsp;Charles Drago Kato ,&nbsp;Mika Sillanpaä ,&nbsp;Patrick Ssebugere","doi":"10.1016/j.hazadv.2025.100979","DOIUrl":"10.1016/j.hazadv.2025.100979","url":null,"abstract":"<div><div>Lake Victoria, the world’s second-largest freshwater lake, continues to face pressure from anthropogenic activities in its catchment area, releasing pollutants, which are ultimately trapped in the sediment core, thereby posing threats to aquatic organisms. This study quantified thirteen organochlorine pesticides (OCPs) and ten polychlorinated biphenyls (PCBs) in sediments from the Uganda, Kenya, and Tanzania sides of Lake Victoria using soxhlet method, fractionation column and GC–MS/MS analysis. Total (∑₁₃) OCPs levels were up to 412, 148, and 522 µg kg^-1 dry weight (d.w), and 12.1, 8.69 and 9.87 µg kg^-1 dw for total (∑₁₀) PCBs for sediments from Uganda, Kenya, and Tanzania, respectively. Diagnostic ratios suggested past and ongoing use of OCPs while principal component analysis confirmed that OCP profiles were mainly due to their application in controlling pests in agriculture and public health programs, and PCB congeners were largely due to volatilization, degradation of higher PCBs into lighter PCBs, improper waste disposal of old transformers, hydraulic fluids, plasticizers, and capacitors. Ecological risk assessment highlighted that the PCB levels in sediments were below threshold effect and probable effect levels, but <em>p,p</em>′-DDD, and lindane were likely to pose adverse effects to sediment-dwelling organisms in Lake Victoria. These results imply persistent pollutant loads in Lake Victoria, and consequently, a need for its enhanced management.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"21 ","pages":"Article 100979"},"PeriodicalIF":7.7,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145924732","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":"Genotypic variation in physiological and molecular responses underpins differential germanium tolerance in rice (Oryza sativa L.)","authors":"Saireen Ahsen ,&nbsp;Shuxin Tu ,&nbsp;Muhammad Ahmad Javeed ,&nbsp;Khurram Shehzad ,&nbsp;Muhammad Baqir Hussain","doi":"10.1016/j.hazadv.2025.100978","DOIUrl":"10.1016/j.hazadv.2025.100978","url":null,"abstract":"<div><div>Germanium (Ge) exhibits dual effects in plants, ranging from beneficial to toxic, depending on its concentration and the plant genotype. A germination-based screening of 18 diverse rice varieties identified TXY2115 and CLY669 as tolerant, and ZXY1205 and ZZY8 as sensitive to Ge stress. This study elucidates the physiological and molecular mechanisms underpinning this differential tolerance under escalating Ge stress (0–40 mg <span>l</span>^-1). The tolerant genotypes effectively mitigated Ge toxicity, sustaining superior growth, higher biomass, and preserving photosynthetic function, evidenced by 18–25 % higher stomatal conductance. This superior photosynthetic function, despite similar percent reductions in total chlorophyll content (56 % in tolerant vs. 54 % in sensitive varieties at 40 mg <span>l</span>^-1 Ge), is explained by two key traits: (1) tolerant varieties retained a higher chlorophyll a/b ratio (1.8 ± 0.1 vs. 1.4 ± 0.1 in sensitive genotypes), preserving photosystem II (PSII) stability, and (2) stronger coupling between stomatal conductance (Gs) and net photosynthetic rate (Pn) (<em>r</em> = 0.83, <em>p</em> &lt; 0.01), as observed in arsenic-tolerant rice. The cornerstone of their tolerance was a preemptive and highly coordinated antioxidant defense system. This was characterized by a significantly enhanced capacity to activate antioxidant enzymes (11–40 % higher Superoxide Dismutase,(SOD) and Catalase (CAT) activity), boost key metabolites like glutathione (33 % higher root GSH), and strongly upregulate the expression of core antioxidant genes (<em>OsSOD1</em> and <em>OsCAT1</em>). This robust multi-level response effectively curtailed oxidative damage, resulting in 37–53 % lower ROS and 45–58 % lower Malondialdehyde (MDA) levels than the sensitive varieties at high Ge concentrations. This research provides a critical framework for assessing Ge’s role in agriculture, its mitigation, and identifies specific targets for breeding crops resilient to Ge stress or suitable for Ge biofortification.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"21 ","pages":"Article 100978"},"PeriodicalIF":7.7,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145924733","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":"Optimized mechanical performances of eco-friendly particulate wood-plastic composites using poplar, cypress, and Platanaceae: Enhancing tensile, flexural, and impact strength","authors":"Yasir A. Abdullah ,&nbsp;Taher Azdast ,&nbsp;Ali Doniavi ,&nbsp;Rezgar Hasanzadeh","doi":"10.1016/j.hazadv.2026.101011","DOIUrl":"10.1016/j.hazadv.2026.101011","url":null,"abstract":"<div><div>Wood-plastic composites (WPCs) are recognized for their long lifespan, lightweight design, good resistance to corrosion and moisture, and eco-friendliness. They are ideal for various applications, making significant contributions to the industry. WPCs samples were manufactured using different weights and particle sizes for three types of wood: poplar, cypress, and Platanaceae. High-density polyethylene (HDPE) and maleic anhydride (MAPE) were added in specific proportions to produce WPCs using the Taguchi design of experiments. Injection-molded samples were obtained through the injection molding process. Additionally, pure samples of HDPE were prepared for comparison with the polymer composites. The main effects of the signal-to-noise ratio analysis and the optimal values for each mechanical property (tensile strength, elongation at break, flexural strength, and impact strength) were determined. ANOVA results showed that the wood type significantly affected tensile strength, while the weight ratio and particle size had no statistical significance. The types of wood had a noticeable and statistically significant effect on flexural strength, with a contribution of 71.28%, followed by the weight ratio, with a contribution of 11.66%, and the particle size, with a contribution of 2.58%. Additionally, the weight ratio significantly influenced the elongation at break and impact resistance tests. Predictive optimized mechanical characteristic values were calculated, showing that the predictive values were in acceptable agreement with the experimental values with errors smaller than 5%. Optimized tensile strength of 39.94 MPa, elongation at break of 18.41%, flexural strength of 51.71 MPa, and impact strength of 19.27 kJ/m² were achieved.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"21 ","pages":"Article 101011"},"PeriodicalIF":7.7,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145924810","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":"2026-02-01","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}