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Journal of hazardous materials
Elsevier Scientific Publishing Co.
Journal of hazardous materials

Elsevier Scientific Publishing Co.

不定期

0304-3894

Journal of hazardous materials/Journal Journal of hazardous materialsSCIISTPAHCI
正式出版
收录年代

    Chloride-enhanced degradation of micropollutants in natural water by the iron/biochar/peroxymonosulfate system: Role of iron(Ⅳ) and radicals

    Mengqiao ZhangWenwen GongXiling WangLee Blaney...
    137952.1-137952.11页
    查看更多>>摘要：The increased occurrence and concentration of micropollutants in water supplies raise public health concerns.Advanced oxidation of micropollutants in real water sources remains challenging due to scavenging reactionsinvolving background anions and natural organic matter. For the first time, this paper demonstrates that chloride(Cl–) accelerates the activation of peroxymonosulfate (PMS) by iron-biochar (Fe/BC) composites. Under thetested conditions, this novel system completely degraded bisphenol A (BPA), a representative micropollutant,within 1.0 min. Micropollutant degradation was investigated at different Cl– contents, PMS levels, Fe/BC doses,and solution pH. The primary reactive species involved with BPA degradation were iron(Ⅳ) (Fe(Ⅳ)), sulfateradical (SO_4•–), hydroxyl radical (•OH), and reactive chlorine species (Cl•, ClO•, Cl_2•–). The steady-state concentrationsof these reactive species were evaluated to determine their relationships to the Cl– and PMS contents. Fe(Ⅳ) was confirmed as the dominant reactive species, with Fe(Ⅳ) concentrations increasing with Cl– content and salinity to enhance the overall BPA degradation. Importantly, BPA degradation by the Fe/BC/PMS/Cl– system was not greatly affected by background anions or natural organic matter (NOM) present in real water sources, and the system was successfully applied for five sequential cycles of BPA treatment.
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    Isobavachalcone confers protection against Cryptococcusneoformans-induced ferroptosis in Caenorhabditis elegans via lifespan extension and GSH-GPX-1 axis modulation

    Weidong QianJiaxing LuTing WangQiming Liu...
    137969.1-137969.17页
    查看更多>>摘要：The recent designation of Cryptococcus neoformans as a critical-priority fungal pathogen by the World HealthOrganization highlights the imperative need for novel antifungal agents with distinct mechanisms of action. Thisstudy elucidates the novel ferroptotic pathway underlying C. neoformans-induced cell death in Caenorhabditiselegans and investigates the therapeutic potential of isobavachalcone (IBC) through comprehensive evaluation ofcore biochemical markers: total glutathione (GSH), malondialdehyde, ferrous iron content, and lipid reactiveoxygen species (ROS). Integrated transcriptomic analysis via RNA-seq and subsequent RT-qPCR validationrevealed critical gene expression patterns associated with antiferroptotic regulation. Our findings demonstratethat C. neoformans infection initiates ferroptosis in C. elegans through iron-dependent lipid peroxidation cascades.Remarkably, IBC administration conferred significant protection against fungal-induced ferroptosis by restoringredox homeostasis-evidenced by elevated GSH levels, attenuated ROS accumulation, and decreased ferrous ironcontent. Mechanistic investigations identified IBC-mediated upregulation of SKN-1 and GSH biosynthesis genes,coupled with suppression of GPX-1 activity. These coordinated effects disrupted the iron-ROS amplification loop through modulation of the GSH-GPX-1 axis, ultimately extending host lifespan in C. neoformans-challenged models. Our results position IBC as a ferroptosis inhibitor with dual antioxidant and iron-chelating properties, offering a therapeutic strategy against cryptococcal infections through targeting of evolutionary conserved cell death pathways.
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    Degradation of dicamba – A persistent herbicide – By combined application of formic acid and UV as an advanced reduction process

    Zahra AskarniyaŁukasz CichockiSławomir MakowiecChongqing Wang...
    137984.1-137984.10页
    查看更多>>摘要：anions (CO_3~(2-) and SO_4~(2-)) had a slightly positive effect on the degradation of dicamba and led to an increase in degradation to 99 %, while they had a negative effect on the dechlorination by 7 % and 30 %, respectively. Due to the turbidity induced by dissolved organic matters (DOM), a moderate decrease in degradation by 39 % and dechlorination by 30 % was observed. The existence of five intermediates identified by GC-MS technique confirmed the proposed mechanism of dicamba degradation via ARP. Reductive degradation of dicamba mainly consists of processes based on CO_2•~‾, including single electron transfer process and radical-nucleophilic aromatic substitution (SRN) reactions, demonstrating the capability of this ARP for the effective degradation of dicamba.
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    Exposure and health risks of benzene from combustion by gas stoves: A modelling approach in U.S. homes

    Anchal GargYannai KashtanMetta NicholsonColin J. Finnegan...
    137986.1-137986.12页
    查看更多>>摘要：Natural gas and propane stoves emit benzene, a known carcinogen through combustion. This study evaluatespopulation-level benzene exposure and associated health risks for the 6.3 million U.S. residents exposed to thetop 5 % highest benzene-emitting gas stoves. We used the National Institute of Standards and Technology’sCONTAM, a multizone indoor air quality model, to simulate benzene concentration distributions across 24floorplans by integrating benzene emission rates with U.S. housing stock data. Health risks were assessed usingthe USEPA Health Risk Assessment methodology under scenarios of low, medium, and high stove usage withventilated (open windows or/and hoods) and non-ventilated conditions. The results show that gas stove emissionssignificantly elevate cancer risks in homes with medium to high gas stove usage and inadequate ventilation.The cumulative Incremental Lifetime Cancer Risks (ILTCR) often exceeded the WHO safe threshold of 1E-06, particularly for children, whose ILTCR was 1.85 times higher (95 % CI: 1.43–2.12) than for adults in most of the high and medium gas stove usage scenarios. While cancer risks were elevated, non-cancer outcomes had hazard quotients <1 in all scenarios. Ventilation mitigated risks, with high-efficiency (≥75 %) vented hoods notably reducing benzene exposure in kitchens. The study underscores the importance of addressing combustion-related indoor air pollutants to protect public health, particularly in households with limited ventilation.
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    Impact of sulfate on the release of genotoxic metals from hardened cement pastes

    Steffen AmannFalk WagemannSebastian BuchingerChristian Dietrich...
    137990.1-137990.9页
    查看更多>>摘要：We investigated the effects of environmentally relevant sulfate concentrations on the leaching behavior of certainmetalloids in hardened cement pastes. In our study, different cement pastes made of Portland cement (CEM I),blast furnace slag cement (CEM Ⅲ/A) and a sulfate-resistant cement (CEM I SR0) were cured for 28 days andleached with ultrapure water and with sulfate-containing water. The released concentrations of the most metalsand metalloids were independent of the presence of environmentally relevant sulfate concentrations below 1 μg/L or even below the limit of quantification (LOQ). However, the contact to sulfate-containing water led to anincreased chromium release from CEM I, compared to leaching in ultrapure water. Under the same conditions anincreased release of vanadium was observed from CEM Ⅲ/A. A micronucleus test of the selected eluates revealedgenotoxic effects which can be very likely attributed to the presence of vanadate. We were further able to connectthe different leaching behavior of cement in sulfate-containing water compared to ultrapure water to changes ofthe specific surface area of the hardened cement pastes.
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    Impact of microplastics on plant biogenic volatile organic compounds emission: A preliminary study

    Shuqin LiuShengmei FengYanping ZhangYang Zheng...
    138000.1-138000.12页
    查看更多>>摘要：Plants produce biogenic volatile organic compounds (BVOCs) that are essential for interacting with the environment.As emerging pollutants, microplastics (MPs) may influence BVOCs emissions, yet their effects remainpoorly underexplored. This study employed headspace solid phase microextraction coupled with gas chromatography– mass spectrum to investigate the impact of MPs on the BVOC emission profiles of lettuce (Lactucasativa). Our results demonstrated that polystyrene (PS) MPs exposure, even at environmental concentrations(0.5–2 mg/L), significantly altered BVOC profiles, with a marked increase in aldehydes and ketones. A 7-foldincrease in phenylacetaldehyde and benzaldehyde at 50 mg/L indicated stress-related metabolic changes,which also evidenced by reduced superoxide dismutase (SOD) activity and shifts in root microbial communities.The key discriminating BVOCs identified suggest that the presence of MPs impact plant survival and adaptability,with emissions originating from various metabolic pathways, including phenylpropanoid, lipoxygenase, andterpenoid synthesis pathways. Furthermore, variations in type, size, and aging treatment of MPs influencedBVOCs emission patterns. Our findings underscore the significance of BVOCs as indicators of exposure risksassociated with MPs and highlight the ecological threats posed by these pollutants.
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    Understanding phytotoxicity of fosthiazate on crop seedlings through uptake kinetics, ROS burst and chloroplast metabolism

    Jiamei ZhuMin JiangWen SunXiaochi Liu...
    138010.1-138010.12页
    查看更多>>摘要：As a crucial management strategy for crop diseases, pests and weeds, the use of pesticides can also have someadverse effects on plant health. Understanding the specific mechanisms is essential for developing effectivemitigation measure. However, most studies on phytotoxicity mechanism have focused on ionic balance andbiochemical responses, with little consideration given to pesticide distributions within plants. Herein, symptomsand the underlying mechanisms of fosthiazate phytotoxicity to crops represented by tomatoes were investigated.Necrotic leaf edge and the root inhibition of tomato seedlings was observed after fosthiazate soil applied at themaximum registered dose. Given its high hydrophilicity, fosthiazate dissolved in soil solution was readilyabsorbed by plant roots and efficiently translocated upward via the transpiration stream, leading to varyingconcentrations across different organs and thus differential phytotoxicity. As fosthiazate accumulates, it inducedplasmolysis, triggered reactive oxygen species (ROS) bursts, and disrupted photosynthesis, resulting in leafwilting and necrotic. The interference of sucrose synthesis, transport and metabolism further inhibited root growth. Fosthiazate-loaded microcapsules could alleviate its phytotoxicity by slowing down the release rate. Our findings provided an important basis for the improvement of pesticide application safety and guiding the development of chemicals targets at specific organisms.
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    Impact of industrial and traffic changes on atmospheric dust and trace element deposition in Didouche Mourad, Algeria

    Mokhtar BouzianeAhmed TerroucheLamri NaidjaHocine Ali-Khodja...
    138014.1-138014.22页
    查看更多>>摘要：Given the critical environmental and health implications of atmospheric deposition, this study examined thelong-term variations in atmospheric dust and trace element deposition in Didouche Mourad, Algeria, from 21/6/2002–20/6/2003 (P1) to 21/12/2017–20/12/2018 (P2), a period marked by significant industrial and infrastructuralchanges. Using a network of 10 sampling sites, we conducted two-year-long measurement campaignsto quantify the deposition rates of dust and seven trace elements (Pb, Mn, Cr, Ni, Cu, Co, and Cd). We used acombination of techniques, including spatiotemporal analysis and enrichment factor calculations, to understandhow local changes affect air quality. The results showed a substantial reduction in the average cross-sitedeposition rates between the two periods: dust (61 %), Co (98 %), Cd (97 %), Pb (90 %), Mn (76 %), Cu(62 %), Ni (51 %), and Cr (50 %). This improvement was attributed to specific interventions, including new roadconstruction and upgraded industrial filtration systems. Shifts in seasonal deposition patterns were observed,with elevated levels in summer and autumn during 2002–2003, changing to peaks in summer and winter in2017–2018. Four main pollution sources were identified through PCA for each period: agricultural activity (P1), soil dust (P2), Saharan dust (P1, P2), vehicular emissions (P1), cement plant (P2), and industrial processes (P1, P2). This study provides crucial insights into the long-term effectiveness of air quality management strategies in industrial areas and offers a model for assessing and mitigating atmospheric pollution in similar global settings. The comprehensive approach and extended timeframe of this study significantly contribute to our understanding of the complex dynamics of atmospheric deposition in evolving urban-industrial environments.
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    Lead (Pb~(2+)) biosorption and bioaccumulation efficiency of Enterobacter chuandaensis DGI-2: Isotherm, kinetics and mechanistic study for bioremediation

    Priyanka PalSudip Kumar GhoshSayanta MondalTushar Kanti Maiti...
    138017.1-138017.19页
    查看更多>>摘要：Heavy metal (HM) contamination, particularly lead (Pb~(2+)), threatens environmental and agricultural sustainability,necessitating effective remediation strategies. This study evaluates the Pb~(2+) sequestration potential ofEnterobacter chuandaensis DGI-2, an HM-tolerant rhizobacterium isolated from a Pb-contaminated rhizosphere.DGI-2 exhibited high Pb~(2+) removal efficiency, achieving 94.73 % removal at 100 μg/mL and 69.09 % at 750 μg/mL over 96 h, primarily through cell surface and exopolysaccharide (EPS) adsorption. Biosorption studiesdemonstrated higher Pb~(2+) uptake in living biomass (102.95 mg/g, 68.63 %) than in dead biomass (98.61 mg/g,65.74 %) under controlled conditions (0.5 g/L biomass, pH-6.5, 720 min). Mechanistic analyses revealed thatPb~(2+) adsorption primarily involved interactions with –OH, –COOH, and –PO_4~(3-) functional groups, facilitated bymultilayer sorption, complexation, and ion exchange. Moreover, a 210.66 % increase in phosphatase activitypromoted Pb~(2+) precipitation, forming stable Pb-phosphate minerals (e.g., Pb₅(PO_4)_3Cl, Pb_(10)(PO_4)_6(OH)_2), asconfirmed by X-ray diffraction (XRD), significantly contributing to Pb sequestration. Regeneration studiesdemonstrated the biomass’ reusability over four cycles. Soil microcosm experiments showed an 11.7–13.1 %reduction in bioavailable Pb, with greater stabilization in non-sterile soils, suggesting synergistic effects withnative microbiota. Additionally, DGI-2 exhibited plant growth-promoting (PGP) traits, reducing phytotoxicity, enhancing soil health and phytostabilization potential, positioning it as a sustainable biosorbent for Pb~(2+) remediation.
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    A critical review of liquid, low toxicity chemical warfare agent simulants: Enhancing accuracy, safety, and methodological approaches for sampling

    Sally WebbFrederic CoulonTracey Temple
    138021.1-138021.16页
    查看更多>>摘要：The use of simulants is a crucial aspect of studying the behaviour and effects of chemical warfare agents (CWAs)and toxic industrial chemicals (TICs) without the inherent dangers associated with handling and utilising theactual hazardous substances. This review assesses the selection and application of simulants for different classesof CWAs, including nerve agents such as soman, V agents and blister agents such as sulphur and nitrogenmustards. Several simulants were examined, including diethyl malonate, malathion, methyl salicylate, and di(propylene glycol) monomethyl ether, to ascertain their structural and physiochemical properties, yet presentminimal toxicity risks. A key insight from this review is the importance of aligning simulant physicochemicalproperties, such as hydrophobicity, volatility and solubility to those of CWAs. This ensures data relevancy insampling accuracy and method validation. Our findings demonstrate the efficacy of utilising multiple simulantsto model complex interactions within different environmental and forensic matrices, thereby enhancing theprecision and reliability of detection and verification procedures. By concentrating on liquid-based simulants andexcluding gaseous and solid agents, this review offers a focused assessment of existing sampling methodologiesfor liquid CWAs in field conditions. It concludes by proposing a unified approach to sampling standards thatmitigates the risk with the objective of enhancing the practicality and reliability of detection methods while ensuring personnel safety. Furthermore, this review provides crucial insights for developing robust, fielddeployableCWA sampling strategies that strike a balance between accuracy, accessibility and low toxicity.
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