Journal of Hazardous Materials最新文献_第3页

Year 116 of the Plastic Age: a Pandora’s Box as a Time Bomb for Pregnancy? Review of Clinical and Fundamental Data on Prenatal Exposure to Plastics 塑料时代的第116年：潘多拉的盒子是怀孕的定时炸弹？产前塑料暴露的临床和基础资料综述

IF 13.6 1区环境科学与生态学

Journal of Hazardous Materials Pub Date : 2025-09-30 DOI: 10.1016/j.jhazmat.2025.140018

Bertrand Lefrère, Léa Poinsignon, Thierry Fournier, Gaëtane Lespes, Jean-Louis Beaudeux, Amal Zerrad-Saadi

{"title":"Year 116 of the Plastic Age: a Pandora’s Box as a Time Bomb for Pregnancy? Review of Clinical and Fundamental Data on Prenatal Exposure to Plastics","authors":"Bertrand Lefrère, Léa Poinsignon, Thierry Fournier, Gaëtane Lespes, Jean-Louis Beaudeux, Amal Zerrad-Saadi","doi":"10.1016/j.jhazmat.2025.140018","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.140018","url":null,"abstract":"Plastics constitute an area of growing interest within the context of the placental exposome. A growing body of evidence now indicates that various micro- and nanoplastics — including notably polystyrene, polypropylene, polyethylene, and polyvinyl chloride — are present in the human placenta, from the basal plate to the fetal membranes. Results from in vitro and ex vivo studies have shown that these environmental pollutants can enter the maternal bloodstream and reach the placenta, where they concentrate in the syncytiotrophoblast. These so-called “plasticenta” have been observed even in uncomplicated pregnancies, and to date, no longitudinal study has confirmed harmful long-term consequences for the newborn. However, plastics appear to alter placental functions and may therefore be associated with adverse outcomes such as miscarriage, intrauterine growth restriction and preterm birth. Findings from ex vivo human studies, in vivo murine models, and in vitro experiments with micro- and nanoplastics indicate that factors such as particle type, size, concentration, surface functionalization, route of exposure, and environmental conditions play key roles in cellular uptake and subsequent alterations in cell function and phenotype. Consequently, various impairments in placental metabolic and immune functions may contribute to abnormal development of the placenta and the fetus. Maternal exposure to these ubiquitous environmental pollutants may induce prenatal and neonatal disease states. In this review, we examine the current clinical, in vivo and in vitro data on the occurrence, distribution and impact of micro- and nanoplastics in the placenta.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"65 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145189346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Magnetic biochar-facilitated azo dye degradation in bioelectrochemical system: Mechanistic insights from carbon metabolism, electron transfer, and molecular docking 磁性生物炭在生物电化学系统中促进偶氮染料降解：来自碳代谢、电子转移和分子对接的机制见解

IF 13.6 1区环境科学与生态学

Journal of Hazardous Materials Pub Date : 2025-09-30 DOI: 10.1016/j.jhazmat.2025.140017

Tianyi Wang, Mengzhuang Yang, Jiawei Liang, Longfeng Hu, Jiaxuan Yang, Hongzhi Liu, Han Zhang, Min Zheng, Heng Liang

{"title":"Magnetic biochar-facilitated azo dye degradation in bioelectrochemical system: Mechanistic insights from carbon metabolism, electron transfer, and molecular docking","authors":"Tianyi Wang, Mengzhuang Yang, Jiawei Liang, Longfeng Hu, Jiaxuan Yang, Hongzhi Liu, Han Zhang, Min Zheng, Heng Liang","doi":"10.1016/j.jhazmat.2025.140017","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.140017","url":null,"abstract":"In this study, Fe-based magnetic biochar (FMB) derived from straw was synthesized and comprehensively investigated for its role in enhancing azo dye degradation in a bioelectrochemical system integrated with a membrane-aerated biofilm reactor. Experimental results revealed that FMB with a 30% iron loading achieved the highest decolorization and mineralization efficiency of alizarin yellow R (AYR) by lowering the biofilm redox potential and charge transfer resistance. Characterization of FMB indicated that surface functional groups (e.g., C=C, C=O) and Fe₃O₄ particles enhanced electron transfer within the system. Moreover, extracellular polymeric substances (EPS) exhibited an increased content of redox-active components, and the α-helix content in proteins increased by 4.61%, enhancing the electroactivity of the biofilm. Metatranscriptomic analysis indicated that FMB modulated carbon metabolism, the electron transport chain and heme biosynthesis to facilitate electron flow toward azoR, the gene encoding azo reductase, and upregulate its expression. Additionally, Aquaspirillum sp. LM1 and Paralcaligenes sp. KSB-10 were identified as the dominant azoR-expressing species in the cathodic and anodic biofilms, respectively. Molecular docking further demonstrated that FMB could spontaneously bind to azoR, reducing the binding free energy of the azoR-AYR complex and accelerating azo bond cleavage. This study provides insights for understanding the mechanisms of magnetic biochar in enhancing the treatment of azo dye wastewater.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"6 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145189436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prospective Associations of In Utero Exposure to Multiple Insecticides with Cord Blood Mitochondria DNA Copy Number and Longitudinal Offspring Telomere Length Shortening 子宫内暴露于多种杀虫剂与脐带血线粒体DNA拷贝数和子代纵向端粒长度缩短的前瞻性关联

IF 13.6 1区环境科学与生态学

Journal of Hazardous Materials Pub Date : 2025-09-30 DOI: 10.1016/j.jhazmat.2025.140019

Feng Qiu, Yanjian Wan, Aizhen Wang, Gaga Mahai, Yujie He, Wensi Zhou, Ying Zhu, Wei Xia, Shunqing Xu, Yuanyuan Li

{"title":"Prospective Associations of In Utero Exposure to Multiple Insecticides with Cord Blood Mitochondria DNA Copy Number and Longitudinal Offspring Telomere Length Shortening","authors":"Feng Qiu, Yanjian Wan, Aizhen Wang, Gaga Mahai, Yujie He, Wensi Zhou, Ying Zhu, Wei Xia, Shunqing Xu, Yuanyuan Li","doi":"10.1016/j.jhazmat.2025.140019","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.140019","url":null,"abstract":"Widespread insecticide exposure can cause adverse health outcomes in offspring due to maternal exposure via elevating oxidative stress levels, which may be evidenced through variations in telomere length (TL) and mitochondrial DNA copy number (mtDNAcn). However, the potential risks of in-utero exposure to multiple classes of insecticides at environmentally relevant doses on offspring's TL and mtDNAcn in early life are still poorly understood. This study aimed to elucidate associations between in-utero exposure to organophosphates, pyrethroids, neonicotinoids and cord blood mtDNAcn and offspring TL shortening. Maternal urinary metabolites of these insecticides were repeatedly measured in three trimesters. Relative mtDNAcn (n = 520) in cord blood and relative TL (n = 299) in cord blood & blood samples of three years old toddlers were also measured. The results showed that the first-, second-, and third-trimester insecticide mixtures were all significantly associated with reduced cord blood mtDNAcn, and the association was primarily driven by desmethyl-clothianidin (DM-CLO). Additionally, the second-trimester insecticide mixture was significantly associated with TL attrition, with DM-CLO being the primary contributor. Our findings showed that in-utero insecticide mixture exposure was related to decreased cord blood mtDNAcn and accelerated longitudinal offspring TL attrition, with DM-CLO being the major contributor.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"100 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145189349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Trace-Level Discrimination and Detection of Polycyclic Aromatic Hydrocarbons via hybrid Photonic-Plasmonic SERS Sensors Integrated with Machine Learning Algorithms 结合机器学习算法的光子-等离子体SERS传感器痕量识别与检测多环芳烃

IF 13.6 1区环境科学与生态学

Journal of Hazardous Materials Pub Date : 2025-09-30 DOI: 10.1016/j.jhazmat.2025.140013

Shiqiang Wang, Huiyun Jiang, Yan Jin, Changkun Qiu, Haozhi Wang, Yifan Song, Liang Zhu

{"title":"Trace-Level Discrimination and Detection of Polycyclic Aromatic Hydrocarbons via hybrid Photonic-Plasmonic SERS Sensors Integrated with Machine Learning Algorithms","authors":"Shiqiang Wang, Huiyun Jiang, Yan Jin, Changkun Qiu, Haozhi Wang, Yifan Song, Liang Zhu","doi":"10.1016/j.jhazmat.2025.140013","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.140013","url":null,"abstract":"Polycyclic aromatic hydrocarbons (PAHs) pose severe environmental threats, yet their trace-level detection via surface-enhanced Raman spectroscopy (SERS) remains challenging, primarily due to insufficient electromagnetic field enhancement and weak substrate-analyte affinity. Herein, a hybrid photonic-plasmonic SERS platform integrated with machine learning algorithms was introduced to address these critical limitations and enhance detection accuracy as well as analysis efficiency. The engineered architecture, comprising Au film-poly(ionic liquid) (PIL) nanobowl-Au nanosphere, exhibited exceptional detection performance through the synergistic coupling of photonic nanocavities and plasmonic hotspots, which collectively generated high-intensity electromagnetic field regions. Concurrently, the PIL nanobowl structures enabled efficient PAH enrichment via hydrophobic interactions and π-π stacking. This integrated system achieved ultra-sensitive quantification of pyrene, anthracene, phenanthrene, and benzo[a]pyrene, with a limit of detection (LOD) ranging from 6.1–8.5×10-10 mol/L. Notably, a strong linear relationship (R2=0.998) was established between principal component analysis (PCA)-derived Euclidean distances and molar ratios in binary mixtures. Furthermore, by leveraging PCA and support vector machine (SVM) algorithms, the sensing platform demonstrated robust discriminative capability for seven structurally analogous PAHs—including single-component analytes and binary/ternary mixtures—in real river water matrices. This study presents a data-driven intelligent sensing strategy integrating nanomaterial engineering and machine learning algorithms, thereby enabling rapid, low-cost detection of trace organic contaminants, especially those with similar chemical structures.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"32 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145189344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Selection of microbial isolates for oxyfluorfen degradation in soil 土壤中羟氟醚降解微生物分离物的筛选

IF 13.6 1区环境科学与生态学

Journal of Hazardous Materials Pub Date : 2025-09-30 DOI: 10.1016/j.jhazmat.2025.139969

Lais Tereza Rego Torquato Reginaldo, Matheus de Freitas Souza, Cydianne Cavalcante da Silva, Jarlan Lucas dos Santos Silva, Gilsivan Sales Medeiros de Aquino, Paulo Sergio Fernandes das Chagas, Nathan Rezende Blat, Márcia Michelle de Queiroz Ambrósio, Ioná Santos Araújo Holanda, Daniel Valadão Silva

{"title":"Selection of microbial isolates for oxyfluorfen degradation in soil","authors":"Lais Tereza Rego Torquato Reginaldo, Matheus de Freitas Souza, Cydianne Cavalcante da Silva, Jarlan Lucas dos Santos Silva, Gilsivan Sales Medeiros de Aquino, Paulo Sergio Fernandes das Chagas, Nathan Rezende Blat, Márcia Michelle de Queiroz Ambrósio, Ioná Santos Araújo Holanda, Daniel Valadão Silva","doi":"10.1016/j.jhazmat.2025.139969","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.139969","url":null,"abstract":"Brazilian agriculture is a key sector for economic development and food security; however, the intensive use of herbicides, particularly oxyfluorfen, has raised environmental concerns due to its persistence in soil. Microbial biodegradation represents a sustainable and promising alternative for mitigating such impacts. This study aimed to: select microbial isolates from soils with a history of oxyfluorfen application capable of surviving in media containing the herbicide; evaluate their oxyfluorfen degradation potential in vitro; identify biochemical markers associated with degradation efficiency; assess the degradation performance of selected isolates in soil via bioaugmentation; and identify the most efficient isolates at the species level. From 35 isolates, 20 demonstrated growth in the presence of oxyfluorfen. Among these, 65% were Gram-positive Bacillus spp., with 50% forming endospores; the remainder included Gram-positive cocci and yeasts. Multiple correspondence analysis of biochemical profiles did not clearly distinguish isolates by degradation capacity. However, isolates 14 and 4 showed superior performance, degrading 40% of the herbicide in 2.8 and 7.4 days (100 mg kg⁻¹), and 9.8 and 13.6 days (200 mg kg⁻¹), respectively. The most effective strains were identified as Bacillus licheniformis, Bacillus pumilus, Bacillus paralicheniformis, Micrococcus luteus, and Moesziomyces aphidis, the latter reported here for the first time.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"29 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145195116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Anchored adsorption and in-situ coagulation of cyanobacteria via Ce(III)-based salt: Enhanced removal efficiency and reduced toxicity 通过Ce（III）基盐锚定吸附和原位混凝蓝藻：提高去除效率和降低毒性

IF 13.6 1区环境科学与生态学

Journal of Hazardous Materials Pub Date : 2025-09-30 DOI: 10.1016/j.jhazmat.2025.140021

Jiaojie He, Qingwang Cai, Ziyi Kang, Jingxin Zhang, Jiaqi Shen, Yuxin Gu, Zhiquan Liu, Tinglin Huang

{"title":"Anchored adsorption and in-situ coagulation of cyanobacteria via Ce(III)-based salt: Enhanced removal efficiency and reduced toxicity","authors":"Jiaojie He, Qingwang Cai, Ziyi Kang, Jingxin Zhang, Jiaqi Shen, Yuxin Gu, Zhiquan Liu, Tinglin Huang","doi":"10.1016/j.jhazmat.2025.140021","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.140021","url":null,"abstract":"This study compared the coagulation performance, floc characteristics, and algal cell integrity between cerium-based coagulants and polyaluminum chloride (PAC). Under optimal dosage (6 mg Ce/L), both CAN (Ce(IV)-based) and CCl (Ce(III)-based) exhibited comparable algal removal efficiency to PAC (>90%), while generating larger flocs (>1200 µm) that settled rapidly (90% within 5 min). However, CAN caused significant algal cell lysis during floc aging, whereas CCl exhibited minimal cell damage. Analysis of CCl flocs revealed a distinct increase in the Ce(IV) concentration post-coagulation, accompanied by pronounced phosphate and carboxyl peaks on the floc surface. Further investigation into the extracellular polymeric substances (EPS) during algal coagulation proved that the coagulation mechanism of CCl proceeded in two steps: 1) Anchoring of the coagulant onto the algal surface via strong adsorption of phosphate and carboxyl groups; 2) Synergistic interactions between algae and EPS, which induced partial oxidation of Ce(III) to Ce(IV), triggering in-situ hydrolysis of Ce(IV). This process generated large floc structures and the subsequent coagulation targeted to algae. This study highlights CCl as an eco-friendly and effective alternative with high algal removal and low toxicity (attributed to reduced Ce(IV) dosage), offering practical advantages for water treatment applications.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"100 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145189437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Functional evidence for the partial conservation of arsenic tolerance mechanisms in Marchantia polymorpha and Arabidopsis thaliana 多形苋和拟南芥耐砷机制部分保存的功能证据

IF 13.6 1区环境科学与生态学

Journal of Hazardous Materials Pub Date : 2025-09-29 DOI: 10.1016/j.jhazmat.2025.140001

Mingai Li, Cong Wang, Paolo Sonego, Enrico Barbaro, Daniela Bertoldi, Alessandro Cestaro, Roberto Larcher, Luigi Sanità di Toppi, Claudio Varotto

{"title":"Functional evidence for the partial conservation of arsenic tolerance mechanisms in Marchantia polymorpha and Arabidopsis thaliana","authors":"Mingai Li, Cong Wang, Paolo Sonego, Enrico Barbaro, Daniela Bertoldi, Alessandro Cestaro, Roberto Larcher, Luigi Sanità di Toppi, Claudio Varotto","doi":"10.1016/j.jhazmat.2025.140001","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.140001","url":null,"abstract":"Arsenic is a widespread metalloid that even at low concentrations is highly toxic to most plant species. While the transcriptional responses associated to arsenic tolerance have been widely investigated in vascular plants, comparatively little is known in their sister lineage, the bryophytes. Most importantly, functional evidence of whether the same genes play major roles in arsenic tolerance responses in these two anciently diverged land plant lineages is currently largely missing.In this study, we identified by RNA-Seq a highly reliable set of differentially expressed genes (DEGs) responding to arsenite toxicity in the model bryophyte Marchantia polymorpha. We then explored the evolutionary level of functional conservation of seven upregulated DEGs by Agrobacterium-mediated transformation in the highly arsenic-sensitive cad1-3 mutant of Arabidopsis thaliana as a representative of tracheophytes, and characterized fresh weight, malondialdehyde production and total arsenic content in dry biomass of transgenic lines.While two of the tested M. polymorpha DEGs did not significantly enhance arsenic tolerance, the remaining five DEGs, when overexpressed in cad1-3, conferred maximal levels of tolerance, measured as biomass accumulation, between 56% and 100% of WT Col-0 plants. Among them, a putative 1-cys peroxiredoxin restored growth, protection from lipid peroxidation and capacity to accumulate arsenic to levels indistinguishable from those of WT.These results provide functional evidence for the considerable conservation of arsenic tolerance responses between M. polymorpha and A. thaliana, suggesting that M. polymorpha can be a valid model for the identification of evolutionary deeply conserved genes for the genetic improvement of crops for arsenic tolerance.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"92 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145183083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Polycyclic aromatic hydrocarbons released from Laohugou Glacier No. 12 in the Qilian Mountains: temporal dynamics, transport mechanisms and fluxes 祁连山老湖沟12号冰川多环芳烃释放：时间动态、输送机制和通量

IF 13.6 1区环境科学与生态学

Journal of Hazardous Materials Pub Date : 2025-09-29 DOI: 10.1016/j.jhazmat.2025.140011

Hua Tao, Zhaofu Hu, Shichang Kang, Xiaobo Wu, Quanlian Li, Xiang Qin, YuShuo Liu, Fangping Yan

{"title":"Polycyclic aromatic hydrocarbons released from Laohugou Glacier No. 12 in the Qilian Mountains: temporal dynamics, transport mechanisms and fluxes","authors":"Hua Tao, Zhaofu Hu, Shichang Kang, Xiaobo Wu, Quanlian Li, Xiang Qin, YuShuo Liu, Fangping Yan","doi":"10.1016/j.jhazmat.2025.140011","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.140011","url":null,"abstract":"Accelerated glacier retreat on the Tibetan Plateau is transforming high-altitude glaciers from pollutant sinks into secondary emission sources of polycyclic aromatic hydrocarbons (PAHs). This study investigated the release characteristics, fluxes, and potential ecological risks of PAHs during the whole ablation season of Laohugou Glacier No. 12. The results show that the total PAHs load ranged from 51.2 to 388.2 ng/L, with dissolved PAHs (DPAHs) dominating the total load. Concentrations of DPAHs and particulate-bound PAHs (PPAHs) peaked during the early ablation season (May) and the intensive ablation period (late July), respectively. Three-ring PAHs were the most abundant, and the average molecular weight of DPAHs was significantly lower than that of PPAHs. DPAHs exhibited no significant diurnal variation pattern, whereas PPAHs concentrations exhibited a distinct diurnal pattern with daytime increases and nighttime decreases. Low-molecular-weight PAHs tended to be released predominantly at night, while high-molecular-weight PAHs showed preferential daytime release. DPAHs release was influenced by fewer environmental factors, while PPAHs release was primarily controlled by runoff and suspended particulate matter. The annual release flux of PAHs from Laohugou Glacier No. 12 reached 6.32 kg/year, with significantly elevated fluxes in July–August due to peak PAHs concentrations and runoff. Meanwhile, PPAHs could adversely affect the survival of benthic organisms. This study provides the first assessment of PAHs release fluxes from the TP glaciers, offering critical baseline data for predicting the downstream ecological impacts of accelerated glacier retreat across High Mountain Asia under climate change.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"6 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145189396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A feature selection-based hybrid model for accurate spatial prediction of potentially toxic elements in sediments: Application to Poyang Lake, China 基于特征选择的沉积物中潜在有毒元素空间准确预测混合模型——以鄱阳湖为例

IF 13.6 1区环境科学与生态学

Journal of Hazardous Materials Pub Date : 2025-09-29 DOI: 10.1016/j.jhazmat.2025.140008

Guanghui Guo, Anjiang Meiduo, Ruiqing Zhang, Chaoyang Wei, Mei Lei

{"title":"A feature selection-based hybrid model for accurate spatial prediction of potentially toxic elements in sediments: Application to Poyang Lake, China","authors":"Guanghui Guo, Anjiang Meiduo, Ruiqing Zhang, Chaoyang Wei, Mei Lei","doi":"10.1016/j.jhazmat.2025.140008","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.140008","url":null,"abstract":"Accurately predicting spatial distribution of potentially toxic elements (PTEs) in sediments is crucial for protecting aquatic ecosystem but remains challenging due to complex interactions of environmental variables. This study developed an integrated framework by combining optimal machine learning (ML) with ordinary kriging (OK) and feature selection to improve prediction accuracy of PTEs in Poyang Lake sediments. Three ML models—random forest (RF), extreme gradient boosting (XGBoost), and support vector machine (SVM)—were evaluated to identify the optimal approach for predicting PTE concentrations. Feature selection techniques including relative importance analysis and recursive feature elimination were applied to identify suitable predictors for each PTE. RF model outperformed the others across all PTEs (R2>0.70). Distinct sets of predictors were identified for each PTE, further refining RFOK model. Incorporating selected predictors, RFOK significantly enhanced prediction accuracy, increasing R2 by 37.5% (Cr) to 421% (Cd) relative to OK, and by 133% (Cr) to 457% (Pb) relative to inverse distance weighting, effectively capturing fine-scale spatial variability. The findings highlight the effectiveness of the RFOK hybridization and the importance of feature selection in enhancing prediction accuracy within complex multifactor aquatic environments, providing scientific supports for designing targeted protection strategies against PTE pollution in aquatic ecosystem.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"1 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145183042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Soil-Air Exchange of Substituted Chlorobenzenes and Volatile PFAS at Contaminated Site: Impact of Environmental Factors and Development of a Fugacity-Based Model 污染场地中取代氯苯和挥发性PFAS的土壤-空气交换：环境因素的影响及基于逸度模型的建立

IF 13.6 1区环境科学与生态学

Journal of Hazardous Materials Pub Date : 2025-09-29 DOI: 10.1016/j.jhazmat.2025.139995

Weiwei Zhang, Limin Ma, Jinpeng Yu, Chengcheng Bu, Yongzhi Wang, Haoyu Zeng, Yuchen Han

{"title":"Soil-Air Exchange of Substituted Chlorobenzenes and Volatile PFAS at Contaminated Site: Impact of Environmental Factors and Development of a Fugacity-Based Model","authors":"Weiwei Zhang, Limin Ma, Jinpeng Yu, Chengcheng Bu, Yongzhi Wang, Haoyu Zeng, Yuchen Han","doi":"10.1016/j.jhazmat.2025.139995","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.139995","url":null,"abstract":"Substituted chlorobenzenes and volatile per- and polyfluoroalkyl substances (PFAS) are significant environmental contaminants that impact soil and air ecosystems. This study investigates the soil-air exchange behavior of these compounds and develops models to predict their exchange under varying environmental conditions. The soil-air partitioning coefficient (KSA) was determined for substituted chlorobenzenes using a solid-phase fugacity meter under different temperatures, relative humidity, and soil organic carbon contents. The results indicate that temperature, relative humidity, and soil organic carbon content significantly influence KSA values. Higher temperatures and humidity increase the volatilization of substituted chlorobenzenes from soil to air, while higher organic carbon content reduces volatility. A multiple linear regression (KSA-MLR) model was developed to predict KSA values, showing high accuracy (adjusted R² = 0.956). Additionally, a fugacity-based model (KSA-In situ) was established to quantify the actual soil-air exchange of these compounds at contaminated sites or laboratory microenvironments. The KSA-In situ model demonstrated better accuracy than the KSA-MLR model in non-equilibrium conditions. This study provides insight into the soil-air behavior and fate of substituted chlorobenzenes and volatile PFAS at contaminated sites. It also offers a robust predictive framework for quantifying their soil-air exchange under varying environmental conditions. This enhances our understanding of their transport mechanisms and supports more effective environmental management and risk assessment.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"199 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145183043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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