Journal of Hazardous Materials最新文献

{"title":"Advancing wetland groundwater pollution zoning: A novel integration of Monte Carlo health risk modeling and machine learning","authors":"Jiayi Du ,&nbsp;Chao Jia ,&nbsp;Yue Ding ,&nbsp;Xiao Yang ,&nbsp;Keyin Feng ,&nbsp;Maojie Wei","doi":"10.1016/j.jhazmat.2025.138412","DOIUrl":"10.1016/j.jhazmat.2025.138412","url":null,"abstract":"<div><div>Wetlands serve as crucial water reservoirs, providing essential water resources for the surrounding regions. However, elevated ion concentrations in wetland groundwater may pose health risks to local populations. This study focused on Judian Lake and its adjacent areas, proposing an innovative multimodel coupled uncertainty propagation framework to establish an integrated \"process characterization-risk quantification-source management\" methodology. The Entropy-Weighted Water Quality Index (EWQI), deterministic and Monte Carlo-based probabilistic health risk assessments, Principal Component Analysis-Absolute Principal Component Score-Multiple Linear Regression (PCA-APCS-MLR), and Self-Organizing Map-K-means (SOM-K-means) clustering were used. Results indicated that over 50 % of the water resources in the study area were suitable for drinking and irrigation purposes. F^-, Mn, NO₂^-, and NO₃^- posed non-carcinogenic risks to both adults and children, with NO₃^- being the most severe. Monte Carlo indicated that for high-concentration pollutants (Mn, NO₂^-, and NO₃^-), source control measures should prioritize concentration reduction, whereas for low-concentration pollutants (F^-), minimizing exposure pathways was necessary. The PCA-APCS-MLR model suggested that NO₃^- primarily originated from agricultural activities, while F^- mainly came from the weathering and dissolution of fluorite. SOM-K-means divided the study into four clusters, of which cluster III was the most polluted.</div></div>","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"494 ","pages":"Article 138412"},"PeriodicalIF":12.2,"publicationDate":"2025-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143909764","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}

{"title":"Occurrence, cytotoxicity contribution, and formation characteristics of iodinated phenolic disinfection byproducts in drinking water","authors":"Hongyu Wu ,&nbsp;Junjie Wang ,&nbsp;Tao Ma ,&nbsp;Yuting Hu ,&nbsp;Yufan Wang ,&nbsp;Tingting Gong","doi":"10.1016/j.jhazmat.2025.138494","DOIUrl":"10.1016/j.jhazmat.2025.138494","url":null,"abstract":"<div><div>Recently iodinated disinfection byproducts (DBPs) have received increasing attention due to their high toxicity. Iodinated phenolic DBPs have been identified in drinking water, but their occurrence, toxicity contribution and formation characteristics have not been clarified. In this study, four categories of iodinated phenolic DBPs were investigated, including iodinated phenols (IPs), iodinated nitrophenols (INPs), iodinated hydroxybenzaldehydes (IHBALs), and iodinated hydroxybenzoic acids (IHBAs). Their occurrence and cytotoxicity contribution in drinking water were examined and their formation characteristics were explored. The results reveal that 17 iodinated phenolic DBPs were present in tap water with concentrations of 0.13–2.54 ng/L. The IPs in tap water exhibited relatively high concentrations and cytotoxicity contribution among the four categories of iodinated phenolic DBPs. The total concentrations and DBP-associated cytotoxicity of iodinated phenolic DBPs in chloramination were significantly higher than that in chlorination, while trihalo-phenols, dihalo-nitrophenols/hydroxybenzaldehydes/hydroxybenzoic acids were the dominant species in the chloraminated drinking water samples. The formation of iodinated phenolic DBPs in chloramination followed pseudo-first-order kinetics and the formation rate constants of IPs were higher than INPs, IHBALs, and IHBAs. Additionally, the total concentrations and DBP-associated cytotoxicity of iodinated phenolic DBPs in chloramination were affected by the monochloramine dose, bromide/iodide concentration, pH and temperature.</div></div>","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"494 ","pages":"Article 138494"},"PeriodicalIF":12.2,"publicationDate":"2025-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143909791","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}

{"title":"Bacterial community assembly processes mediate soil functioning under cadmium stress in the agroecosystem","authors":"Jiannan Jian ,&nbsp;Shuang Feng ,&nbsp;Yi Xu ,&nbsp;Maohang Jia ,&nbsp;Huayan Huang ,&nbsp;Xin Zheng ,&nbsp;Huakang Liu ,&nbsp;Heng Xu","doi":"10.1016/j.jhazmat.2025.138496","DOIUrl":"10.1016/j.jhazmat.2025.138496","url":null,"abstract":"<div><div>Elucidating the effects of community assembly processes on soil functioning represents a crucial challenge in theoretical ecology, particularly under cadmium (Cd) stress, where our understanding remains limited. In this study, we therefore used amplicon sequencing and a quantitative-PCR-based chip to analyze the changes in bacterial community characteristics, soil functioning and their interrelationships in agroecosystems under different levels of Cd stress. The results indicated that Cd stress led to a decline in community diversity (Z-score), network complexity and stability, an increase in species turnover, and a regulation of community structure. Cd stress significantly increased the relative importance of dispersal limitation and homogeneous selection, reducing community drift and rendering the community more deterministic. Finally, Cd stress significantly reduced soil functional potential (Z-score) and soil functional stability (Z-score), impairing soil carbon, nitrogen, phosphorus, and sulfur cycling. It is noteworthy that correlation and random forest analyses revealed significant effects of specific community assembly processes, including dispersal limitation, homogeneous selection, drift (and others), on changes in soil functional potential (Z-score). The results emphasize the pivotal role of community assembly processes in dictating soil functioning under Cd stress, thereby offering novel insights into the comprehension of microbial-driven mechanisms governing soil functioning.</div></div>","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"494 ","pages":"Article 138496"},"PeriodicalIF":12.2,"publicationDate":"2025-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143909789","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}

{"title":"Temperature-induced atomic intrinsic sites evolution during waste dyeing sludge into the wealthy iron-based catalyst to sustainable decontamination","authors":"Shengkun Zhang ,&nbsp;Xunheng Jiang ,&nbsp;Yue Chen ,&nbsp;Chenghui Luo ,&nbsp;Lixiao Wang ,&nbsp;Zimo Lou ,&nbsp;Jiang Xu ,&nbsp;Xinhua Xu","doi":"10.1016/j.jhazmat.2025.138491","DOIUrl":"10.1016/j.jhazmat.2025.138491","url":null,"abstract":"<div><div>Although the worldwide spike in the production of dyeing sludge offers a tantalizing resource to be harnessed, effective waste-to-wealth strategies remain elusive due to its intricate toxic organic matter and metallic elements. Here, we developed a temperature-rebuilding strategy to transform discarded dyeing sludge into an iron-based catalyst with favorable charge transfer for the highly efficient and sustainable Fenton-like catalytic degradation of ppm-level contaminants in wash-tank water. Using X-ray diffraction, X-ray photoelectron spectroscopy, and synchrotron X-ray absorption spectroscopy, we could precisely track and identify the gradual formation of inherent sites (i.e., Fe₂(SO₄)₃, FeOOH, and Fe_1-xS) towards active sites (i.e., FeS and Fe⁰) at crystal, surface, and atomic levels. Benefiting from the reconstruction of iron sites, BC-800 effectively decomposed peroxymonosulfate into multiple radicals and nonradicals through electronic structure modulation, which enabled nearly 100 % degradation and over 60 % mineralization rate of common aromatic compounds within 30 min via ring-opening and dechlorination/substitution pathways. More delightedly, the BC-800 maintained excellent Fenton-like activity across a broad pH or multiple anions coexisted, and its device allowed extended parachlorophenol degradation for over 1 d. This work proposes a feasible “waste control by waste” approach to the reutilization of dyeing sludge, encouraging a potential solution for sustainable wastewater treatment.</div></div>","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"494 ","pages":"Article 138491"},"PeriodicalIF":12.2,"publicationDate":"2025-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143909762","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}

{"title":"PFAS inhibited sulfamethoxazole removal by regulating biofilm metabolisms on biological activated carbon","authors":"Zhenguo Qi ,&nbsp;Xin Huang ,&nbsp;Min Wang ,&nbsp;Chunfeng Lv ,&nbsp;Baoyou Shi","doi":"10.1016/j.jhazmat.2025.138498","DOIUrl":"10.1016/j.jhazmat.2025.138498","url":null,"abstract":"<div><div>Activated carbon (AC) filtration is an effective technique to remove emerging contaminants in drinking water treatment plants. Adsorption onto AC and biodegradation by biofilm are two main mechanisms for the removal of emerging contaminants such as antibiotics. However, the effects of highly bioaccumulative and toxic poly- and perfluoroalkyl substances (PFAS) on antibiotic removal by AC filtration have not been well-understood. In this work, two AC columns were built and operated for 434 days to study the effects of ng-level PFAS on the removal of sulfamethoxazole (SMX). The results showed that 100 ng/L PFAS significantly decreased the removal rate of 1 μg/L SMX from 78.8 % to 71.7 %. Trace PFAS decreased the abundances of ammonia monooxygenase and nitrite-oxidizing bacteria, thus repressing nitrification co-metabolism process. Meanwhile, trace PFAS inhibited tricarboxylic acid (TCA) cycle by preventing pyruvate from generating acetyl-CoA, reducing energy supply for co-metabolism process. On the other hand, inhibiting TCA cycle led to a redirection of carbon from growth into polysaccharide intercellular adhesin biosynthesis. Trace PFAS also increased glutamate synthase and glutamine synthetase abundances, which promoted biofilm formation and then hindered SMX adsorption by AC. This study provides new insights into the adverse role of PFAS in antibiotic removal by AC filtration.</div></div>","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"494 ","pages":"Article 138498"},"PeriodicalIF":12.2,"publicationDate":"2025-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143909763","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}

{"title":"Co-incorporation of lattice S and P into nano zero-valent iron induces multiple Kirkendall effects for enhanced trichloroethylene reduction efficiently","authors":"Yinghao Shi ,&nbsp;Honghong Lyu ,&nbsp;Saisai Guo ,&nbsp;Jiaming Guo ,&nbsp;Feilong Gao ,&nbsp;Jingchun Tang","doi":"10.1016/j.jhazmat.2025.138402","DOIUrl":"10.1016/j.jhazmat.2025.138402","url":null,"abstract":"<div><div>Conventional zero-valent iron (ZVI) materials are limited by the constraints of reactivity-selectivity-stability trade-offs, so designing multi-heteroatom co-modified ZVI with synergistic effects is gradually gaining popularity. Herein, we developed a novel co-modified nZVI by simultaneously doping sulfur (S) and phosphorus (P) heteroatoms into nZVI using the one-step liquid-phase reduction method. In this case, the faster diffusion rate of core iron atoms compared to shell components triggeres multiple Kirkendall effects, causing the inward diffusion of vacancies with further coalescing into radial nanocracks. Regarding the reactivity and selectivity, sulfidation and phosphorylation co-modified nZVI exhibited the best performance, with a trichloroethylene (TCE) dechlorination rate (<span><math><msub><mrow><mi>k</mi></mrow><mrow><mi>obs</mi><mo>,</mo><mi>TCE</mi></mrow></msub></math></span>) of 0.65 h⁻¹ and an electron efficiency (<span><math><msub><mrow><mi>ε</mi></mrow><mrow><mi>e</mi></mrow></msub></math></span>) of 14.5 %, which are 20.9 and 13.8 times higher than those of unmodified nZVI. A series of characterizations and electrochemical analyses indicated that S and P doping significantly altered the physicochemical properties of the core and shell layers, generating distinctive “lemon slice” nanocracks that could be used as electron transport channels, and <span><math><msub><mrow><mtext>FeS</mtext></mrow><mrow><mtext>X</mtext></mrow></msub></math></span> significantly reduced the availability of hydrogen evolution reaction (HER) active surface sites and attenuates the passivation of nZVI. In addition, the co-modified S/P-nZVI exhibited excellent stability in different groundwater conditions, indicating its strong potential for application.</div></div>","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"494 ","pages":"Article 138402"},"PeriodicalIF":12.2,"publicationDate":"2025-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143900003","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}

{"title":"Quorum sensing regulates the efficiency of a microcystin-degrading microbial consortium","authors":"Jin Zhou ,&nbsp;Wei Zhao ,&nbsp;Mengjie Wu ,&nbsp;Jiajun Wu ,&nbsp;Jinming Zhu ,&nbsp;Xiaowan Liu ,&nbsp;Jing Hu ,&nbsp;Zhonghua Cai ,&nbsp;Leo Lai Chan","doi":"10.1016/j.jhazmat.2025.138479","DOIUrl":"10.1016/j.jhazmat.2025.138479","url":null,"abstract":"<div><div>Microbial biodegradation represents an environmentally friendly solution for microcystin (MC) removal. However, the regulatory factors influencing MC biodegradation within microbial communities remain poorly understood. We hypothesized that a consortium of MC-degrading microorganisms can synergistically enhance MC biodegradation efficiency under quorum sensing (QS) signal regulation. Initially, analysis of publicly available data identified a widespread correlation between QS signals and MC-degrading genes. Subsequent laboratory studies confirmed that acyl-homoserine lactones (AHLs) represent the predominant QS signal type during the degradation of MCs by microbial consortia. A significant positive correlation was found among the AHL signal, MC degradation genes, and microbial members of the degradation process. Finally, we found that the absence of the AHL system reduced both the efficiency of MC degradation and the expression of <em>mlr</em> cluster genes in the microbial consortium, confirming the regulatory role of the AHL system in MC degradation at the community level. The mutualistic cooperation mechanisms were also demonstrated by metatranscriptomic and qRT-PCR analyses. These findings underscore the significant role played by the QS system in microbial community-mediated MC degradation and suggest that the manipulation of QS signals could be a promising strategy for enhancing MC treatment efficiency. Harnessing microbial cooperation through QS offers a sustainable approach for mitigating MC contamination and safeguarding water health.</div></div>","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"494 ","pages":"Article 138479"},"PeriodicalIF":12.2,"publicationDate":"2025-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143901575","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}

{"title":"Prenatal exposure to multiple air pollutants and risks of preterm birth and low birth weight in twins: A comparison between natural conception and medically assisted reproduction","authors":"Wenpu Shao ,&nbsp;Zhiping Niu ,&nbsp;Hao Zhou ,&nbsp;Haifeng Xu ,&nbsp;Yangyang Zhu ,&nbsp;Shuang Du ,&nbsp;Yanyi Xu ,&nbsp;Xinlin Hou ,&nbsp;Fang Xiong ,&nbsp;Renci Zhu ,&nbsp;Weishe Zhang ,&nbsp;Zhice Xu ,&nbsp;Ying Gu ,&nbsp;Minya Sun ,&nbsp;Ying Chen ,&nbsp;Zhuohui Zhao","doi":"10.1016/j.jhazmat.2025.138489","DOIUrl":"10.1016/j.jhazmat.2025.138489","url":null,"abstract":"<div><div>Exposure to air pollution has been linked to higher risks of adverse pregnancy outcomes. However, evidence from twin pregnancies is limited, and differences between natural conception (NC) and medically assisted reproduction (MAR) remain unexplored. This study enrolled 935 twin pairs in Wuxi, China, from 2017 to 2022. A high spatiotemporal resolution prediction model was used to assess prenatal exposure to air pollutants, including PM_2.5, PM₁₀, SO₂, NO₂, CO, and O₃. Associations of prenatal air pollution exposure with preterm birth (PTB), low birth weight (LBW), and low birth weight preterm birth (LBWPT) were analyzed using generalized linear models. The prevalence of PTB, LBW, and LBWPT among the twin pairs was 68.0 %, 72.4 %, and 57.5 %, respectively. Prenatal exposures to PM_2.5, PM₁₀, SO₂, and CO were significantly associated with increased risks of PTB, LBW, and LBWPT. Subgroup analyses revealed increased risks in the MAR group (SO₂) for PTB and LBWPT, the NC group (CO) for LBW, and twins born in winter/spring (PM_2.5, PM₁₀, SO₂) for PTB and LBWPT. Our findings underscore the importance of tailoring preventive measures to MAR-conceived twins, NC twins, and those born in winter/spring to better protect against the adverse effects of prenatal air pollution exposure.</div></div>","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"494 ","pages":"Article 138489"},"PeriodicalIF":12.2,"publicationDate":"2025-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143901578","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}

{"title":"From glacier forelands to human settlements: Patterns, environmental drivers, and risks of antibiotic resistance genes","authors":"Binglin Zhang ,&nbsp;Ruiqi Yang ,&nbsp;Yang Liu ,&nbsp;Junming Guo ,&nbsp;Junhua Yang ,&nbsp;Xiang Qin ,&nbsp;Shijin Wang ,&nbsp;Junlin Liu ,&nbsp;Xiaoying Yang ,&nbsp;Wei Zhang ,&nbsp;Guangxiu Liu ,&nbsp;Tuo Chen","doi":"10.1016/j.jhazmat.2025.138455","DOIUrl":"10.1016/j.jhazmat.2025.138455","url":null,"abstract":"<div><div>Antibiotic resistance genes (ARGs) are biological pollutants widely present in glaciers, such as ice, snow, and melt water. However, it remains unclear whether ARGs in glaciers influence their distribution in human settlements within the glacier basins. Therefore, we investigated the distribution pattern and driving factors of ARGs in the Laohugou glacier basins on the Tibetan Plateau. Using high-throughput quantitative PCR, the total abundance of ARGs in the Laohugou glacier basins ranged from 7.53 × 10⁶ to 1.83 × 10⁹ copies/g, including 128 detected ARGs across 11 classes, with aminoglycoside resistance genes being the dominant group. The abundance of ARGs exhibited a U-shaped pattern along the elevational gradient, with higher levels in glacier regions and human settlements, and the lowest abundance at mid-elevations. While glacier melting and anthropogenic disturbance are likely major contributors to this pattern, other potential mechanisms may also be involved, such as elevation-dependent microbial community composition, atmospheric deposition and release of legacy ARGs from melting permafrost and glacial ice. Together, these processes likely interact to shape the observed ARG pattern in this alpine watershed. We further verified that the distribution of ARGs was strongly correlated with microbial community structure, especially bacterial communities (r &gt; 0.50; <em>p</em> &lt; 0.05). Network analysis showed that <em>Nitrolancea</em> negatively correlated with several core ARGs, suggesting its potential role in regulating the spread of ARGs. Random forest analysis and structural equation modeling (SEM) indicated that, after accounting for various driving factors, organic matter and bacterial biomass were the primary drivers of increased ARG abundance. This study provides a foundation for assessing the risks of ARGs in glacier basins under global climate change, offering insights into risk mitigation strategies and guiding future ecological and public health research.</div></div>","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"494 ","pages":"Article 138455"},"PeriodicalIF":12.2,"publicationDate":"2025-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143901576","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}

{"title":"Systematic quantitation for microplastics and nanoplastics based on size-fractionated filtration hyphenated to Raman/SERS and slope-matching strategy","authors":"Xinyuan Guo,&nbsp;Shu Li,&nbsp;Tong Wang,&nbsp;Jie Su,&nbsp;Yadi Liu,&nbsp;Jing Chen,&nbsp;Jinhua Zhan","doi":"10.1016/j.jhazmat.2025.138488","DOIUrl":"10.1016/j.jhazmat.2025.138488","url":null,"abstract":"<div><div>The issue of micro/nanoplastics has attracted widespread attention. The accurate quantitation of micro/nanoplastics remains challenging due to their heterogeneous size distributions. Herein, a systematic method was proposed that integrates Raman or surface-enhanced Raman spectroscopy (SERS) hyphenated to size-fractionated filtration (SFF-R/S) and a slope-matching strategy, thereby enhancing quantitative accuracy in spectral data acquisition and data handling. Micro/nanoplastics were categorized into four size fractions (&gt;1 μm, 500 nm–1 μm, 50–500 nm, and &lt;50 nm). Raman spectroscopy was employed to analyze larger particles, while SERS was used for 50–500 nm and sub-50 nm nanoplastics. In SFF-R/S, the spectral interferences between fractions were eliminated, thereby improving the accuracy of spectral intensities. In external quantitation, a slope-matching method was used to improve analytical accuracy by estimating particle size. The relative error was &lt; 10 % for single fraction quantitation and &lt; 5 % for mixtures. This systematic method works well with micro/nanoplastics of different polymers and showed a detection limit lowered to 2 × 10⁻⁵ g·L⁻¹ for polystyrene (PS) nanoplastics. Its practical utility was validated by the analysis of released micro/nanoplastics from disposable PS cups. This work provides information on chemical components, concentrations, and size distribution of micro/nanoplastics mixtures, which advances our understanding of their environmental behavior and physiological effects.</div></div>","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"494 ","pages":"Article 138488"},"PeriodicalIF":12.2,"publicationDate":"2025-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143901574","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}