Journal of Hazardous Materials最新文献

{"title":"Bicarbonate ions promote rapid degradation of pollutants in Co(II)Fe(II)/peroxyacetic acid systems","authors":"Yuqiong Wang, Zonghui Zhang, Lele Zhao, Chong Ma, Qi Hu, Xiaohong Hou","doi":"10.1016/j.jhazmat.2024.136918","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2024.136918","url":null,"abstract":"Peroxyacetic acid (PAA), as an oxidizing agent, has gained significant attention in the field of advanced oxidation because of its low toxicity and high degradation capacity. In this study, cobalt-iron-based Prussian blue analogs (Co-PBAs) were utilized for the first time to activate PAA for tetracycline degradation. In the Co-PBAs/PAA system, organic radicals (RO•) and high-valent metal oxides are mainly produced. TC is efficiently removed in a wide pH range (5−9) and a variety of interferences (Cl^-, SO₄^2-, bicarbonate ions (HCO₃^-), humic acid, and the actual water bodies) in water bodies due to the specificity of RO•. Interestingly, the catalytic rate of the Co-PBAs/PAA system was significantly accelerated in the presence of HCO₃^- (k_obs increasing from 0.171 min⁻¹ to 0.534 min⁻¹). This enhancement is attributed to the reaction between HCO₃^- and PAA, and carbonate radicals (•CO₃^-) and acetyl peroxyl radicals (CH₃C(O)OO•) are generated and then react with the phenolic hydroxyl group of TC. In this study, the mechanism of PAA activation by Co-PBAs was revealed, and PAA-based advanced oxidation process enhanced by HCO₃^- was provided for the removal of pollutants from wastewater.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"31 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857938","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":"Effective management of pre-existing biofilms using UV-LED through inactivation, disintegration and peeling","authors":"Liang Shen, Wenqi Chen, Jinyu He, Xueru Luo, Yang Mei, Baoping Zhang","doi":"10.1016/j.jhazmat.2024.136925","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2024.136925","url":null,"abstract":"Managing undesirable biofilms is constantly a hard problem in water treatment and distribution systems. Although ultraviolet-light emitting diode (UV-LED) irradiation, an emerging disinfection method with the chemical-free and emission-adjustable merits, has been widely reported effective to inactivate planktonic bacteria, there are few studies about UV-LED on biofilms. This study thereby attempts to merge this gap by exploring the performance and mechanism of UV-LEDs on the prefabricated <em>Escherichia coli</em> (<em>E. coli</em>) biofilms with varying irradiation conditions. Consequently, the wavelength of 275<!-- --> <!-- -->nm exhibited better inactivation effect on the biofilm-bound bacteria than 268, 312 and 370<!-- --> <!-- -->nm, achieving 3.2<!-- --> <!-- -->log inactivation at fluence of 346.5 mJ/cm² and irradiance of 660 μW/cm². Further, irradiance and irradiation time were proposed for the first time a pair of conjugate variables correlating to log inactivation, as a modification of Bunsen-Roscoe reciprocity law. Moreover, the effect of UV irradiation on extracellular polymeric substances (EPS) in terms of the structure and chemical properties was investigated, which supports that the oxidative degradation of the polysaccharides and proteins in EPS matrix should be the primary reason for destroying the biofilm framework. Subsequently, an additional hydraulic shear was implemented on the irradiated biofilms, suggesting an effective way for enhanced biofilm removal.<h3>Environmental Implication</h3>Unwanted but ubiquitous biofilms in water and wastewater systems are highly hazardous events, leading to problems like microbial contamination, biocorrosion and particularly pathogens habitation. Ultraviolet (UV) irradiation is a non-chemical alternative of the conventional disinfection technique chlorination. While so far, most UV disinfection studies focused on planktonic bacteria but not biofilms. Besides, the conventional UV light source mercury lamp has evolved to UV-light emitting diode (UV-LED). This study will bridge the gap of the new technology (UV-LED irradiation) and the old problem (biofilm control), and then provide new insights and useful reference for effective management of biofilms in water environment.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"23 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857883","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":"Human exposure to polychlorinated alkanes (C8-36) in soil and dust from Nigerian e-waste sites: occurrence, homologue pattern and health risk assessment","authors":"Shanshan Yin, Bilikis T. Folarin, Stijn Bosschaerts, Temilola Oluseyi, Giulia Poma, Xuanchen Liu, Adrian Covaci","doi":"10.1016/j.jhazmat.2024.136954","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2024.136954","url":null,"abstract":"Electronic waste (e-waste) dismantling and dumpsite processes are recognized as significant sources of chlorinated paraffin (CP) exposure. This study aims to investigate the environmental occurrence and distribution of polychlorinated alkanes (PCAs-C_8-36), specifically in soil and outdoor dust samples collected from e-waste dumpsites and automobile dismantling and resale sites in Nigeria. The results revealed a widespread occurrence of PCAs across all sampled locations. For the PCAs homologue groups ∑PCAs-C_10-13, ∑PCAs-C_14-17, and ∑PCAs-C_18-20, the median concentrations were 1,150<!-- --> <!-- -->ng/g dry weight (dw), 1,180<!-- --> <!-- -->ng/g dw, and 370<!-- --> <!-- -->ng/g dw in the dust samples, and 2,840<!-- --> <!-- -->ng/g dw, 1,820<!-- --> <!-- -->ng/g dw, and 830<!-- --> <!-- -->ng/g dw in the soil samples, respectively. Notably, the homologue distribution patterns of PCAs-C_8-36 were similar in both dust and soil samples. However, PCAs-C_10-13 was found to be higher in the soil samples, likely due to the wet and/or dry deposition effect of the aerosols, given these chemicals' volatile nature and ease of atmospheric dispersion. Pearson correlation analysis further revealed a co-occurrence of contaminants in the soil samples, supporting the hypothesis that soil acts as a sink for persistent organic pollutants (POPs). Additionally, lower molecular weight polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) showed reduced correlation with the PCAs. Health risk assessments indicated that working on e-waste sites could potentially pose a risk to the workers' health. This study highlights the urgent need for mitigating occupational exposure to PCAs, especially in informal e-waste processing environments where personal protective measures are often lacking.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"89 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867333","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":"Two sides of the same coin: weathering differences of plastic fragments in coastal environments around the globe","authors":"Bo Hu, Mui-Choo Jong, João Frias, Irina Chubarenko, Gabriel Enrique De-la-Torre, Prabhu Kolandhasamy, Md. Jaker Hossain, Elena Esiukova, Lei Su, Hua Deng, Wenjun Zhao, Yifan Zheng, Huahong Shi","doi":"10.1016/j.jhazmat.2024.136957","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2024.136957","url":null,"abstract":"Plastic debris in coastal environments usually undergoes weathering due to various environmental conditions. However, the weathering effects on exposed and shaded sides of the same plastics are underexplored. In this study, 1573 plastic fragments were collected from 15 coastal sites worldwide between December 2021 and December 2022, and weathering experiments were conducted outdoors. The field investigation showed significant two-sided weathering differences of plastic fragments. The weathering morphology included biota, cracks, delamination, discoloration, etc. The weathering degree was assessed with three metrics, i.e., line density (0 to 58<!-- --> <!-- -->mm/mm²), surface loss (0 to 92%), and texture index (0 to 2). The 3D magnitudes of these three metrics revealed the two-sided weathering differences of plastic fragments. Specifically, 43% of the samples had magnitudes &gt; 5, indicating significant differences. Outdoor simulations suggested that sun-exposed sides developed more cracks, pores, and bubbles, while shaded sides remained smoother. After 12 months, the line density increased from 2.85 to 9.23<!-- --> <!-- -->mm/mm² for polyethylene (PE) and 4.16 to 8.47<!-- --> <!-- -->mm/mm² for polypropylene (PP) (<em>p</em> &lt; 0.05). The carbonyl index increased from 0.50 to 1.70 (PE), from 0.18 to 1.10 (PP), and from 0.45 to 1.57 (polyvinyl chloride). This increase indicated oxidative degradation on sun-exposed sides. Our results highlighted the uneven degree of weathering on both sides of the same plastic fragment due to different environmental factors. The study provided critical insights for creating more accurate models to predict plastic degradation, which will help inform global strategies to reduce plastic pollution.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"1 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867336","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":"Solar driven enhanced adsorption of radioactive Cs+ and Sr2+ from nuclear wastewater by chitosan-based aerogel embedded with Prussian blue analog","authors":"Na Yang, Xu Guo, Jing Yu, Qi Liu, Jingyuan Liu, Jiahui Zhu, Rongrong Chen, Jun Wang","doi":"10.1016/j.jhazmat.2024.136955","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2024.136955","url":null,"abstract":"The rational use of solar energy to achieve photothermal conversion is an attractive strategy to promote the efficient removal of radioactive Cs⁺ and Sr²⁺ from nuclear wastewater. Herein, a photothermal adsorbent of composite aerogel with three-dimensional porous structure is fabricated by integrating prussian blue analogues (PBAs) and straw biochar into the chitosan (CS) and waste leather scrap hydrolysate (WLSH) aerogel matrix (CS/WLSH/C/PBAs). The local heating effect generated by CS/WLSH/C/PBAs aerogel induce to generate steam, accelerating the enrichment of Cs⁺ and Sr²⁺ in the solution, which increase their interaction with the CS/WLSH/C/PBAs and improves their adsorption rates and capacities. Under simulated sunlight, the adsorption equilibrium times for Cs⁺ and Sr²⁺ by CS/WLSH/C/PBAs are shortened from 5<!-- --> <!-- -->h in the dark condition to 2<!-- --> <!-- -->h, with maximum adsorption capacities of 156.0 and 95.1<!-- --> <!-- -->mg/g for Cs⁺ and Sr²⁺, respectively. Meanwhile, the CS/WLSH/C/PBAs aerogel also exhibits excellent reusability. Notably, the Cs⁺ and Sr²⁺ still can be efficiently removed in simulated seawater. Encouragingly, the CS/WLSH/C/PBAs aerogel also exhibits excellent adsorption properties for dyes and oils. This work provides insights for the design of multifunctional and efficient composite adsorbents, and paving a promising way for enhancing the adsorption of Cs⁺ and Sr²⁺ through solar energy.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"31 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857980","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":"GPR120 exacerbates the immune-inflammatory response in chicken liver by mediating acetochlor induced macrophage M1 polarization","authors":"Yue Zhang, Hongmin Lu, Lulu Hou, Xin Zhang, Tiantian Guo, Ruoqi Wang, Qi Wang, Mingwei Xing","doi":"10.1016/j.jhazmat.2024.136928","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2024.136928","url":null,"abstract":"Acetochlor is a widely used and highly effective herbicide. Its overuse poses significant threats to biosecurity and ecological integrity, particularly affecting free-ranging birds. Data on its impact, especially mechanisms of liver toxicity in chickens, are lacking. Thus, we established an animal-cell-animal model to explore intrinsic mechanisms at multiple levels. We found that acetochlor exposure caused liver cell swelling, inflammatory cell accumulation, and lipid deposition. Transcriptomic analyses revealed that differential gene were mainly enriched in hepatic immune, inflammatory, and programmed cell death pathways. We next focused on the gene GPR120, conducting transfection and agonism experiments in LMH, HD11, and co-cultured cells. Acetochlor significantly increased ROS accumulation, activated the NLRP3 inflammasome, and which induced PANoptosis. HD11 cells exhibited M1 polarization with upregulated pro-inflammatory factors. Silencing GPR120 exacerbated cellular damage and immune responses, whereas its agonist, GSK7A, dramatically reduced macrophage M1 polarization and mitigated immune damage to LMH cells. Finally, we returned to animal studies, adding Omega-3-a known GPR120 agonist-to the diet. Omega-3 effectively reversed acetochlor-induced hepatitis and PANoptosis. Given that acetochlor residues pose potential threats to ecosystems and avian health, it is crucial to strengthen residue control, conduct risk assessments, and explore targeted pathways and nutritional supplementation to counteract these negative impacts.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"23 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857933","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":"In-situ designed Bi metal @ defective Bi2O2SO4 to enhance photocatalytic NO removal via boosted directional interfacial charge transfer","authors":"Qin Geng, Hongtao Xie, Ye He, Si Chen, Fan Dong, Yanjuan Sun","doi":"10.1016/j.jhazmat.2024.136951","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2024.136951","url":null,"abstract":"Photocatalytic technology provides a new approach for the harmless treatment of low concentration NO_x in the atmosphere. The development of high-performance semiconductor materials to improve the light absorption efficiency and the separation efficiency of photogenerated carriers is the focus of the research. Bismuth oxybismuth sulfate (Bi₂O₂SO₄) shows significant potential for photocatalytic NO_x purification due to its unique electronic and layered structure. However, its wide bandgap limits light absorption efficiency in the visible region, resulting in an undesirable photocatalytic activity. The surface plasmon resonance effect presents an effective strategy to enhance the catalytic activity of wide bandgap semiconductors under visible light. In this study, metal Bi loaded Bi₂O₂SO₄ photocatalysts with abundant oxygen vacancies (OVs) were prepared by in-situ reduction with NaBH₄, which exhibited a significantly enhanced visible-light catalytic purification of NO. The OVs not only induced the formation of intermediate energy levels and reduced the bandgap, but also enhanced the visible-light absorption ability of Bi₂O₂SO₄ and promoted carrier separation. The Bi metal also promoted the carrier separation and provided more hot electrons for the activation of small molecules to generate reactive radicals, which facilitated the photocatalytic reaction. The photocatalytic NO purification pathway and its performance enhancement mechanism were investigated by combining theoretical calculations and in-situ infrared characterization. This work provides new insights for the development and design of novel Bi-based semiconductors and new materials for the application of low concentration NO_x photocatalytic purification process.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"31 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857884","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":"Robust source reconstruction of atmospheric radionuclides from observations of different sparsity with spatial preselection and non-smooth constraints","authors":"Yuhan Xu, Xinwen Dong, Haoyuan Luo, Sheng Fang","doi":"10.1016/j.jhazmat.2024.136919","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2024.136919","url":null,"abstract":"As the global-nuclear-capacity-tripling plan is implemented, reconstruction of the source locations and release rates of atmospheric radionuclides becomes increasingly important for the environment and human health. However, such reconstruction is vulnerable to unrealistic solutions because it is ill-posed. This study proposed a spatiotemporally constrained reconstruction method that excludes false estimates and achieves high accuracy. It uses the Spearman’s correlation coefficient to constrain the spatial search range and applies the L2 cost-function within this range to retrieve the source location. Using this location, time-varying release rates are estimated with non-smooth constraints, which simultaneously reconstructs the peak releases and removes unrealistic oscillations. Validation against both field experiments and real-world events demonstrated that this method effectively excludes false source locations. The estimated location is up to 96.27%, 98.31%, and 96.48% closer to the reported sources than those of the L2 cost-function, Pearson-correlation-constrained L2 cost-function, and Bayesian methods, respectively. The estimated release rates matched the reported time windows and total amounts, avoiding the unrealistic oscillations in other estimation methods. The proposed method exhibited superior performance and speed over the L2 cost-function method under different station layouts and numbers. Furthermore, it could improve other methods using different cost functions, indicating its potential for various applications.<h3>Environmental Implication</h3>Source reconstruction of atmospheric radionuclide releases is becoming increasingly important for the environment and human health because of the persistent leakage risk and increased demands following the global-nuclear-capacity-tripling announcement. We propose a spatiotemporally constrained reconstruction method that adaptively excludes false source locations and unrealistic temporal variations, both of which are long-standing problems in reconstruction of real events, and achieves robust performance under scenarios with different observation sparsity and station layouts. Additionally, the proposed approach can improve existing methods, especially with limited observations, thereby representing a versatile tool both for global radioactivity surveillance and environmental process investigation based on radioactivity tracers.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"42 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142849354","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":"Effects of compound immobilized bacteria on remediation and bacterial community of PAHs-contaminated soil","authors":"Jiantao Li, Miao Yu, Weitao Liu, Zeqi Zheng, Jinzheng Liu, Ruiying Shi, Aurang Zeb, Qi Wang, Jianling Wang","doi":"10.1016/j.jhazmat.2024.136941","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2024.136941","url":null,"abstract":"Immobilized microorganism technology is expected to enhance microbial activity and stability and is considered an effective technique for removing soil polycyclic aromatic hydrocarbons (PAHs). However, there are limited high-efficiency and stable bacterial preparations available. In this study, alkali-modified biochar (Na@CBC700) was used as the adsorption carrier, sodium alginate (SA) and polyvinyl alcohol (PVA) as embedding agents, and CaCl₂ as the cross-linking agent to prepare immobilized <em>Acinetobacter</em> (CoIMB) through a composite immobilization method. The CoIMB preparation was optimized using response surface methodology and applied to PAH-contaminated soil remediation. Results indicated that CoIMB exhibited improved mechanical strength and microbial activity, achieving degradation rates of 2-5 rings PAHs up to 82.41%, averaging 1.5 times higher than CK. High dose CoIMB treatment enhanced soil microbial community diversity, enriching <em>Acinetobacter</em>, and increased the abundance of functional genes related to fatty acid metabolism and energy metabolism (K00249, K01897, K00059). This composite immobilized bacterial particle provides a novel, broad-spectrum, and cost-effective solution for remediating organic pollutants in soil environments.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"54 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857932","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":"Size-dependent selectivity and quantification on detecting PS nanoplastics particles in a mixed solution with different diameters by using periodic Ag nanocavities SERS substrates with high sensitivity","authors":"Yansheng Liu, Zhenle Qin, Guofu Wang, Xiaobo Jia, Jin Zhou, Hongqi Li, Zhaoxu Li, Xiaohui Fang","doi":"10.1016/j.jhazmat.2024.136943","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2024.136943","url":null,"abstract":"Nanoplastic particles (NPPs) have attracted lots of attention due to their toxicity. In this study, a Surface-enhanced Raman scattering (SERS)-based category on selectivity and quantification detecting the polystyrene (PS) NPPs has been presented. Firstly, the size-dependent SERS relationship between the diameter of Ag nanocavities (AgNCAs) and the diameter of the PS NPPs is studied. By continuously dripping the PS NPPs on proposed AgNCAs substrates, AgNCAs exhibit excellent enrichment capability with a promoted limit of detection (LOD) of 0.001<!-- --> <!-- -->mg/mL. Secondly, thermally evaporated Ag nanoparticles (AgNPs) as an enhancement layer are used to form the AgNPs/PS NPPs/AgNCAs sandwich structure with a SERS enhancement of 300%. Thirdly, a SERS microfluidic chip constructed by integrating two kinds of pore size (87<!-- --> <!-- -->nm and 356<!-- --> <!-- -->nm) AgNCAs is fabricated to selectivity quantifying absolute concentration of the mixed PS NPPs with different diameters in a mixed solution. It shows excellent performance. This novel category proves a good method for identifying plastic nanoparticles and analyzing their size distribution existing in the surroundings indicating good practical applications.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"114 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142849351","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}