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Ferroptosis involved in inhaled polystyrene microplastics leaded myocardial fibrosis through HIF-ROS-SLC7A11/GPX4 Pathway 认领 引用 被引量：1
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作者 Danyang Huang Huiwen Kang +5 位作者 Ziyan Liu Wei Zhang Jingyu Wang Ziyan Wang Guangyu Jiang Ai Gao 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2026年第1期391-402,共12页
The issue of microplastic(MPs)pollution has received increased attention in recent years.Studies have indicated that inhalation of microplastics may result in the cardiovascular harm.However,the specific mechanism rem... The issue of microplastic(MPs)pollution has received increased attention in recent years.Studies have indicated that inhalation of microplastics may result in the cardiovascular harm.However,the specific mechanism remains to be elucidated.In this study,5μm polystyrene microplastics(PS-MPs)were employed to construct in vivo and in vitro exposure models to investigate the potential mechanisms of microplastic-induced cardiac fibrosis.In vivo model of respiratory exposure to MPs,echocardiography observed a decrease in systolic-diastolic function of the mouse heart,and myocardial tissue showed significant mitochondrial morphological abnormalities and myocardial fibrosis.In vitro models also revealed upregulation of fibrosis indicators in human cardiomyocytes AC16 cells.Transcriptome and RT-qPCR assay exposed that ferroptosis-related pathways were significantly gath-ered in the MPs group,with decreased expression of ferroptosis related genes SLC7A11 and GPX4.Liproxstatin-1(Lip-1),a ferroptosis inhibitor,significantly ameliorated MPs-induced cardiomyocyte fibrosis and ferroptosis.We further demonstrated that inhibition of hypoxia-inducible factor?(HIF-?)and oxidative stress ameliorated PS-MPs-induced cardiomyocyte ferroptosis,and thus upregulation of the HIF pathway and oxidative stress may be the upstream mechanism of MPs-induced ferroptosis in myocardial fibrosis.Above all,our study demonstrated that MPs exposure resulted in cardiac fibrosis via the HIF-ROS-SLC7A11/GPX4 signaling pathway. 展开更多
关键词 Polystyrene Microplastics Inhale Ferroptosis Cardiotoxicity
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Polystyrene microplastics impaired decidualization in mice via oxidative stress and inflammation and disrupted the reproductive function of their female offspring 认领 引用
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作者 Weike Li Boyin Tan +12 位作者 Jun Xiong Jiani Diao Jing Wang Jing Long Zhenyin Chen Yuguang He Xuemei Chen Fei Han Fangfang Li Junlin He Yingxiong Wang Yan Su Rufei Gao 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2026年第4期51-63,共13页
The extensive utilization of plastics has heightened concerns regarding microplastics exposure.However,the effects of polystyrene microplastics(PS-MPs)on early pregnancy remain inadequately investigated.This study aim... The extensive utilization of plastics has heightened concerns regarding microplastics exposure.However,the effects of polystyrene microplastics(PS-MPs)on early pregnancy remain inadequately investigated.This study aimed to examine the impact of PS-MPs on decidualization and embryo implantation in female mice,as well as the reproductive function of their offspring following maternal exposure to PS-MPs.We investigated the harmful effects of different PS-MPs sizes on mouse endometrial stromal cells(mESCs)during in vitro decidualization.Pregnant mice were orally given various concentrations of PS-MPs to examine their impact on decidualization.We evaluated oxidative stress and inflammation markers to understand their roles in abnormal decidualization.Additionally,we assessed potential reproductive health impacts on female offspring.Our findings indicated that 5μm PS-MPs effectively penetrated mESCs and significantly disrupted decidualization compared to smaller or larger particles.Pregnant mice that were exposed to 5μm PS-MPs at a dose of 1000 mg/(kg・day)exhibited substantial reductions in the decidual area and downregulation of decidualization markers such as BMP2.Inflammatory cytokines increased significantly in mESCs following 5μm PS-MPs exposure,and the elevated malondialdehyde levels in uterine tissue were mitigated by antioxidant treatment.Moreover,offspring exhibited decreased uterine wet weight,uterine organ coefficients,decidual areas,and expression of BMP2 due to maternal exposure to PS-MPs.These results highlighted the detrimental effects of PS-MPs on maternal decidualization and embryo implantation,suggesting a link to oxidative stress and inflammation,and maternal exposure to PS-MPs during pregnancy impaired reproductive function in offspring females. 展开更多
关键词 Polystyrene microplastics Decidualization Endometrial stromal cell Oxidative stress Inflammation Offspring
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Polystyrene microplastics trigger intestinal inflammation through CXCL11-mediated T-cell recruitment 认领 引用
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作者 Yao Tan Xiaoyan Chen +4 位作者 Hao Ge Yu Han Binqi Yang Xiaopeng Zhu Li Yuan 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2026年第8期488-497,共10页
Polystyrene microplastics(PMs)are pervasive aquatic contaminants,yet the molecular mechanisms driving their ecotoxicity,particularly intestinal inflammation,remain poorly elucidated.Here,we investigated the effects of... Polystyrene microplastics(PMs)are pervasive aquatic contaminants,yet the molecular mechanisms driving their ecotoxicity,particularly intestinal inflammation,remain poorly elucidated.Here,we investigated the effects of environmentally relevant PMs concentrations(1.0μm;0,25,and 250μg/L)in zebrafish(Danio rerio).Multiorgan screening identified the intestine as the primary site of inflammation,where PMs were confirmed to accumulate.Exposure of 4 weeks induced significant histopathological damage(2.2-2.7-fold increase in histological scores)and elevated key pro-inflammatory cytokines,including tumor necrosis factor-α(increased by251.0%)and interleukin-2(increased by 81.7%)at 250μg/L.Mechanistic investigation using transcriptomics and qPCR revealed the activation of the interferon-gamma(INFy)-signal transducer and activator of transcription 1(ST AT1)pathway.This activation resulted in the significant upregulation of downstream chemokine genes,notably cxcl11.1(>2.2-fold).This signaling cascade subsequently promoted T-cell infiltration into the intestine,as confirmed by immunofluorescence(1.8-1.9-fold increase in cluster of differentiation 3ε(CD3ε)intensity) and Western blot(2.2-2.3-fold increase in CD3εprotein).Our findings demonstrate that PMs disrupt intestinal homeostasis by triggering an INFγ-STAT1-CXCL11 signaling axis,which heightens C-X-C motif chemokine ligand 11(CXCL11)expression to drive T-cell recruitment and amplify the inflammatory cascade.This study provides novel molecular insights into PMs-induced immunotoxicity in fish,elucidating a specific pathway of intestinal disruption and highlighting the ecological risks of microplastic pollution. 展开更多
关键词 Polystyrene microparticles Zebrafish Intestinal inflammation Immunotoxicity INFγ-STAT1 signaling
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Polystyrene waste valorization via selective C-C bond cleavage:the second life of polymers 认领 引用
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作者 Mei Wu Jia Wang Hu Li 《ENGINEERING Chemical Engineering》 SCIE EI CAS CSCD 2026年第6期75-77,共3页
1 Background and current research progress Since the 1950s,petroleum-derived plastics have emerged and played irreplaceable roles in ameliorating everyday life,driven by extensive applications in food packaging,buildi... 1 Background and current research progress Since the 1950s,petroleum-derived plastics have emerged and played irreplaceable roles in ameliorating everyday life,driven by extensive applications in food packaging,building materials,and electronic devices.In 2019,plastics in output reached 460 million tonnes per year,and it is expected to outstrip 1.014 billion tonnes by 2060[1]. 展开更多
关键词 electronic devicesin c c bond cleavage waste valorization polystyrene food packagingbuilding plastic production forecast polymer reuse
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Mass spectrometry analysis reveals changes in patterns and correlations of nucleic acid epigenetic modifications in mouse tissues exposed to polystyrene microplastics 认领 引用 被引量：1
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作者 Tian Feng Shu-Yi Gu +2 位作者 Lu-Fei Shi Yao-Hua Gu Bi-Feng Yuan 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第3期418-423,共6页
Microplastics(MPs),which originate from plastic degradation,are becoming a significant environmental pollutant,and their prevalence is increasing rapidly.Humans can ingest MPs through various pathways and their presen... Microplastics(MPs),which originate from plastic degradation,are becoming a significant environmental pollutant,and their prevalence is increasing rapidly.Humans can ingest MPs through various pathways and their presence has been detected in multiple human organs,raising concerns about the potential toxic effects associated with plastic consumption.Epigenetic modifications of nucleic acids play crucial roles in various biological processes,including gene expression and tumorigenesis.Previous studies have demonstrated that exposure to certain environmental pollutants can influence disease pathogenesis by affecting epigenetic factors,including modifications of nucleic acids.However,the impact of MPs on epigenetic modifications of nucleic acids remains largely unexplored.In this study,we systematically investigated the alterations in epigenetic modifications of DNA and RNA following exposure to polystyrene microplastics(PS-MPs).We utilized liquid chromatography-tandem mass spectrometry(LCMS/MS)to simultaneously analyze two DNA epigenetic modifications of 5-methylcytosine(5m C)and 5-hydroxymethylcytosine(5hm C),along with twenty RNA epigenetic modifications from small RNA and nine epigenetic modifications from m RNA.We measured changes in the levels of DNA and RNA modifications across six tissues(heart,liver,spleen,lung,kidney,and intestine)in mice after PS-MPs exposure.The results indicated that exposure to PS-MPs significantly altered the landscape of epigenetic modifications in nucleic acids.Furthermore,we observed tissue-specific effects,suggesting that different organs respond uniquely to PS-MPs exposure.Additionally,the correlation patterns between DNA and RNA modifications changed following PS-MPs exposure.These findings provide valuable insights suggesting that PS-MPs exposure may alter the patterns of epigenetic modifications in nucleic acids,potentially leading to adverse health effects. 展开更多
关键词 Polystyrene microplastics Exposure Epigenetics Mass spectrometry DNA modification RNA modification
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Influence of polystyrene microplastics on bioconcentration and metabolism of 2-ethylhexyl diphenyl phosphate in common carp(Cyprinus carpio) 认领 引用
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作者 Zhihui Zhong Jingyao Wang +6 位作者 Hongxia Zhao Jia Zhao Tadiyose Girma Bekele Huihui Wan Yuming Sun Xintong Li Xiaonuo Zhang 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2026年第8期1-10,共10页
The synergistic effects of microplastics(MPs)and co-existing pollutants,particularly their impact on aquatic organisms,is an emerging concern.The influence of MPs on the bioconcentration and biotransformation of organ... The synergistic effects of microplastics(MPs)and co-existing pollutants,particularly their impact on aquatic organisms,is an emerging concern.The influence of MPs on the bioconcentration and biotransformation of organophosphate flame retardants(OPFRs)in organisms remains poorly understood.This study investigated the impact of polystyrene microplastics(PS-MPs)on the bioconcentration and metabolism of 2-ethylhexyl diphenyl phosphate(EHDPHP),a specific OPFR,in common carp.Results indicated that the adsorption kinetics of PSMPs on EHDPHP conformed to the pseudo-second-order kinetic model(R2>0.961),indicating a high adsorption capacity.Both the linear model(R2=0.995)and Freundlich model(R2=0.996)described effectively the adsorption isotherms.Compared with EHDPHP exposure alone,the presence of PS-MPs potentially reduced the bioconcentration of EHDPHP in fish tissues without significantly altering its distribution.Notably,the bioconcentration factors(BCFs)and half-life(t1/2)of EHDPHP were elevated in fish.Furthermore,14 metabolites,primarily formed through hydroxylation metabolism,were identified,suggesting that PS-MPs may amplify EHDPHP's hydroxylation process.These results offer critical insights into the environmental behavior and risk assessments of MPs and OPFRs,underscoring the need for comprehensive ecological studies in this area. 展开更多
关键词 2-Ethylhexyl diphenyl phosphate Polystyrene microplastics Bioconcentration Metabolism Adsorption Common carp
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Co-exposure to polystyrene microplastics and perfluorooctanoic acid can exacerbate lipid metabolism disorders and liver damage in adult zebrafish 认领 引用
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作者 Sijie Tian Ruixiang Li +5 位作者 Ya Zeng Lingfeng Qin Caicheng Long Taiping Qing Peng Zhang Bo Feng 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2026年第5期185-196,共12页
Microplastics(MPs)and perfluorooctanoic acid(PFOA)are common emerging environmental contaminants in aquatic environments,and their ecological risks have become a research focus.Although they coexist widely in aquatic ... Microplastics(MPs)and perfluorooctanoic acid(PFOA)are common emerging environmental contaminants in aquatic environments,and their ecological risks have become a research focus.Although they coexist widely in aquatic environments,the combined toxicity of polystyrene microplastics(PS-MPs)and PFOA to aquatic organisms remains unclear.This study investigated the individual and combined toxicity of PS-MPs and PFOA to zebrafish after 28 days of exposure.The results showed that ingestion of PS-MPs and PFOA induced intestinal and liver tissue damage,alterations in oxidative stress,and lipid index in zebrafish.The breakdown of the intestinal barrier will further lead to the increase of lipopolysaccharide in the blood.Notably,combined exposure to PS-MPs and PFOA exerted greater adverse effects than exposure to each contaminant individually.Additionally,exposure to PS-MPs and PFOA significantly disrupted the homeostasis of the intestinal microbiota,and the relative abundances of Proteobacteria and Actinobacteria significantly increased.Transcriptomic analysis further revealed that exposure to PS-MPs and PFOA would lead to the upregulation of genes related to lipid metabolism in zebrafish and alterations in pathways such as glycerolipid metabolism,fat digestion and absorption,and peroxisome proliferator-activated receptor signaling.In conclusion,this study demonstrates that combined exposure to PS-MPs and PFOA exacerbates liver and intestinal damage in zebrafish,disrupts lipid homeostasis,and may contribute to the development of nonalcoholic fatty liver disease.This study has enhanced our understanding of the environmental health risks from the coexistence of MPs and PFOA,and has reference value for formulating complex pollution control standards. 展开更多
关键词 Polystyrene microplastics(PS-MPS) Perfluorooctanoic acid(PFOA) Combined toxicity Lipid metabolism Hepatotoxicity Zebrafish
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Dual-functional ionic liquid catalysts for efficient photooxidative upcycling of polystyrene to benzoic acid 认领 引用
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作者 Haoyi Wang Yankai Zhang +3 位作者 Chunying Si Yunbiao Qi Quanxing Zhang Wei Jiang 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 2026年第4期231-243,共13页
Polystyrene,a widely used yet chemically inert plastic,poses major recycling challenges due to its low degradability and global recovery rate below 1%,calling for innovative upcycling strategies under mild conditions.... Polystyrene,a widely used yet chemically inert plastic,poses major recycling challenges due to its low degradability and global recovery rate below 1%,calling for innovative upcycling strategies under mild conditions.Herein,we report a dual-functional ionic liquid catalyst,[BSPy][OTf]-Fe(OTf)3,that enables room-temperature photooxidative upcycling of PS into benzoic acid with a yield of 76.43%in 24 h under an oxygen atmosphere.This catalytic performance is substantially higher than that of control systems using individual components or their physical mixture,indicating a strong synergistic effect.Mechanistic investigations revealed that Fe3+in the ionic liquid initiates chain scission via a single-electron transfer process,generating oxidized intermediates.These intermediates are subsequently converted to benzoic acid through singlet oxygen,as supported by kinetic isotope effect studies and density functional theory calculations.The generation of singlet oxygen is facilitated by the ionic liquid catalyst,as confirmed by ultraviolet-visible and electron paramagnetic resonance spectroscopy.The approach is applicable to post-consumer Polystyrene products,with benzoic acid yields ranging from 56.01%to 74.57%.This study establishes a mechanistically guided strategy for low-energy,selective upcycling of PS,offering a viable alternative to conventional high-temperature or harsh-oxidant approaches. 展开更多
关键词 Polystyrene upcycling Acidic ionic liquid catalyst Photooxidative degradation Singlet oxygen Single-electron transfer Post-consumer plastic waste
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Preparation and Catalytic Performance of Hierarchical Porous Polystyrene Microsphere-supported Au NPs Composite Catalyst 认领 引用
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作者 ZHANG Yao ZHANG Jinming +2 位作者 XIONG Yi LI Xuefeng ZHANG Gaowen 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS CSCD 2026年第4期1107-1115,共9页
A hierarchical porous polystyrene microsphere(HPPM)that simultaneously possesses micro-,meso-,and macropores was fabricated by two-step seed swelling and hyper-crosslinking method,respectively,based on the polystyrene... A hierarchical porous polystyrene microsphere(HPPM)that simultaneously possesses micro-,meso-,and macropores was fabricated by two-step seed swelling and hyper-crosslinking method,respectively,based on the polystyrene(PS)microspheres prepared by dispersion polymerization using a shaker.Subsequently,Au NPs were in-situ loaded onto the sulphonated HPPM via a thermal reduction reaction to prepare the hierarchical porous polystyrene microsphere-supported Au NPs(Au@sHPPM)composite catalyst.SEM and particle size test results show that the microspheres exhibit excellent monodispersity.The specific surface area reaches 529.21 m2·g-1when the ratio of St/DVB is 0.6:2.0,and further increases to 644.14 m2·g-1after hyper-crosslinking.The XRD and XPS analysis results indicate that HAuCl4is reduced to Au NPs.In the reduction reaction of 4-nitrophenol with sodium borohydride(NaBH4),Au@sHPPM composite catalyst demonstrates excellent catalytic performance,with a conversion rate of up to 96.76%within 15 minutes.Furthermore,it also demonstrates outstanding catalytic performance for organic dyes such as Congo red,Rhodamine B and Malachite green,indicating that the Au@sHPPM composite catalyst has good stability and reusability. 展开更多
关键词 polystyrene microspheres hierarchical porous shaking table method Au NPs catalytic performance
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A pseudo-elastic damage-based model for compressive stress in expanded polystyrene foams 认领 引用
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作者 Alejandro E.Rodriguez-Sanchez 《Theoretical & Applied Mechanics Letters》 EI CAS CSCD 2026年第2期175-184,共10页
This work presents the application of a pseudo-elastic model to address the uniaxial compressive stress-strain behavior of expanded polystyrene foams.The model combines an Ogden-based hyperfoam formulation for the loa... This work presents the application of a pseudo-elastic model to address the uniaxial compressive stress-strain behavior of expanded polystyrene foams.The model combines an Ogden-based hyperfoam formulation for the loading path of experimental testing with a damage-dependent approach for the unloading.The loading during compression is described using a simplified hyperfoam strain-energy function that effectively captures the nonlinear response of compressible polymer foams.For the unloading path,the model incorporates a scalar damage parameter controlled by three key variables:maximum damage,a damage evolution rate,and a transition parameter.Experimental validation confirms the model's accuracy in predicting the mechanical response of polystyrene foams,including inelastic phenomena.This precision is supported by coefficient of determination R2 values close to unity when comparing the model's predictions with experimental data.Thus,the proposed model provides a practical tool for analyzing the compressive stress response in polystyrene foams. 展开更多
关键词 Expanded polystyrene Compressive stress Pseudo-elastic model Stress-strain curves
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Deciphering the toxic effects of polystyrene nanoparticles on erythropoiesis at single-cell resolution 认领 引用 被引量：2
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作者 Eun Jung Kwon Hyeon Mi Sung +10 位作者 Hansong Lee Soyul Ahn Yejin Kim Chae Rin Lee Kihun Kim Kyungjae Myung Won Kyu Kim Dokyoung Kim Sanghwa Jeong Chang-Kyu Oh Yun Hak Kim 《Zoological Research》 SCIE CAS CSCD 2025年第1期165-176,共12页
Polystyrene nanoparticles pose significant toxicological risks to aquatic ecosystems,yet their impact on zebrafish(Danio rerio)embryonic development,particularly erythropoiesis,remains underexplored.This study used si... Polystyrene nanoparticles pose significant toxicological risks to aquatic ecosystems,yet their impact on zebrafish(Danio rerio)embryonic development,particularly erythropoiesis,remains underexplored.This study used single-cell RNA sequencing to comprehensively evaluate the effects of polystyrene nanoparticle exposure on erythropoiesis in zebrafish embryos.In vivo validation experiments corroborated the transcriptomic findings,revealing that polystyrene nanoparticle exposure disrupted erythrocyte differentiation,as evidenced by the decrease in mature erythrocytes and concomitant increase in immature erythrocytes.Additionally,impaired heme synthesis further contributed to the diminished erythrocyte population.These findings underscore the toxic effects of polystyrene nanoparticles on hematopoietic processes,highlighting their potential to compromise organismal health in aquatic environments. 展开更多
关键词 Polystyrene nanoparticles Zebrafish embryos Single-cell RNA sequencing Erythropoiesis
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Modification mechanism of caking property of polystyrene waste using low-temperature pyrolysis and its use in coal-blending coking 认领 引用
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作者 Xiangchun Liu Ying Chen +1 位作者 Huan Song Ping Cui 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2025年第1期93-101,共9页
Polystyrene(PS)waste was depolymerized using a low-temperature pyrolysis treatment(LTPT)to increase its caking index.The mechanism of caking index modification was revealed by using Fourier transform infrared spectros... Polystyrene(PS)waste was depolymerized using a low-temperature pyrolysis treatment(LTPT)to increase its caking index.The mechanism of caking index modification was revealed by using Fourier transform infrared spectroscopy,thermogravimetric(TG)analysis,pyrolysis-gas chromatography with mass spectrometric detection,and solid-state13C nuclear magnetic resonance spectroscopy.The crucible coal-blending coking tests were carried out using an industrial coal mixture and the treated-PS with the highest caking index(PS300)or raw PS.Some properties of the resultant cokes were also analyzed.It was demonstrated that the caking index of PS dramatically increased by LTPT;however,exceeding 300℃ did not yield any benefit.The caking index increased due to the formation of the caking components,whose molecules are medium in size,caused by LTPT.Additionally,the coke reactivity index of the coke obtained from the mixture containing PS300 decreased by 5.1%relative to that of the coke made from the mixture with PS and the coke strength after reaction index of the former increased by 7.3% compared with that of the latter,suggesting that the ratio of depolymerized PS used for coal-blending coking could increase relative to that of PS. 展开更多
关键词 Polystyrene pyrolysis Caking index Coking property
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Optical transmittance and pulse shape discrimination of polystyrene/poly(methyl methacrylate)-based plastic scintillators 认领 引用 被引量：3
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作者 Yi-Yao Liang Ying-Du Liu +2 位作者 Pu-Sen Wang Jie Bao Xiao-Ping Ouyang 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2025年第1期94-102,共9页
Polymethyl methacrylate(PMMA)is an optically transparent thermoplastic with favorable processing conditions.In this study,a series of plastic scintillators are prepared via thermal polymerization,and the impact of PMM... Polymethyl methacrylate(PMMA)is an optically transparent thermoplastic with favorable processing conditions.In this study,a series of plastic scintillators are prepared via thermal polymerization,and the impact of PMMA content on their transparency and pulse shape discrimination(PSD)ability is investigated.The fabricated samples,comprising a polystyrene(PS)-PMMA matrix,30.0 wt%2,5-diphenyloxazole(PPO),and 0.2 wt%9,10-diphenylanthracene(DPA),exhibit high transparency with transmissivity ranging from 70.0 to 90.0%(above 415.0 nm)and demonstrate excellent n/γdiscrimination capability.Transparency increased with increasing PMMA content across the entire visible light spectrum.However,the PSD performance gradually deteriorated when the aromatic matrix was replaced with PMMA.The scintillator containing 20.0 wt%PMMA demonstrated the best stability concerning PSD properties and relative light yields. 展开更多
关键词 Neutron detection Plastic scintillation Pulse shape discrimination Polymethyl-methacrylate Polystyrene
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Polystyrene microplastics affect the early life stages of large yellow croaker Pseudosciaena crocea 认领 引用 被引量：1
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作者 Hailing YANG Fangzhu WU +6 位作者 Fangping CHEN Jiangning ZENG Qikun YANG Lukuo MA Tianqi ZHAI Yu ZHOU Wei HUANG 《Journal of Oceanology and Limnology》 SCIE CAS CSCD 2025年第2期644-655,共12页
Microplastics(MPs)have garnered significant international scrutiny as an emerging environmental pollutant,constituting one of the four principal global environmental threats and posing potential health hazards to huma... Microplastics(MPs)have garnered significant international scrutiny as an emerging environmental pollutant,constituting one of the four principal global environmental threats and posing potential health hazards to humans.However,data on the impact of MPs on the early life of the commercially important fish remain limited.In this study,polystyrene microspheres(PS-MPs)(1 and 5μm)were used to investigate the effects of MPs on the growth,development,and metabolism in early life stages of large yellow croaker Pseudosciaena crocea.Results indicate that MPs were enriched in the gastrointestinal tract and gills of the fish.In addition,PS-MPs(1μm)exhibited no obvious effects on embryo hatching and heart rates,while increased the mortality rate(23.00%vs.control 14.99%)and decreased the body length(4098.61±447.03μm vs.control with 2827.04±254.75μm)of the larvae at the highest exposure concentration(5×104items/L).Metabolomics analysis revealed that PS-MPs(5μm)induced mild perturbations in phospholipid metabolism,specifically alterations in phosphatidylethanolamine(PE)levels.These changes influenced the cell membranes of juvenile fish,and consequently elicited inflammatory responses,disrupted lipid homeostasis,and affected other critical physiological processes.Ultimately,these effects may avoid the growth retardation and potential mortality.Therefore,PS-MPs could affect negatively the fish health in the early life stage,which has implications for aquatic ecosystems. 展开更多
关键词 polystyrene microplastic(PS-MP) early life stage Pseudosciaena crocea large yellow croaker development metabolomic
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One-step Preparation of Brush-type Polystyrene(PS)-SiO2-Poly(2-hydroxyethyl methacrylate)Janus Nanoparticle to Compatibilize PS/Poly(methyl methacrylate)Blends 认领 引用
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作者 Feng-Yuan Tu Ming-Feng Wang +5 位作者 Gang Zhong Hua-Wei Qiao Bo-Tuo Zheng Can-Pei Liu Ming-Feng Chen Hua-Gui Zhang 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2025年第8期1375-1386,共12页
Compatibilization is crucial for the blending of immiscible polymers to develop high-performance composites;however,traditional compatibilization by copolymers(pre-made or in-situ generation)suffers from weak interfac... Compatibilization is crucial for the blending of immiscible polymers to develop high-performance composites;however,traditional compatibilization by copolymers(pre-made or in-situ generation)suffers from weak interface anchoring,and inorganic particles have gained extensive attention recently owing to their large interfacial desorption energy,while their low affinity to bulk components is a drawback.In this study,an interfacial atom transfer radical polymerization(ATRP)technique was employed to grow polystyrene(PS)and poly(2-hydroxyethyl methacrylate)(PHEMA)simultaneously on different hemispheres of Br-functionalized SiO2 nanoparticles to stabilize a Pickering emulsion,whereby a brush-type Janus nanoparticle(SiO2@JNP)was developed.The polymer brushes were well-characterized,and the Janus feature was validated by transmission electron microscope(TEM)observation of the sole hemisphere grafting of SiO2-PS as a control sample.SiO2@JNP was demonstrated to be an efficient compatibilizer for a PS/poly(methyl methacrylate)(PMMA)immiscible blend,and the droplet-matrix morphology was significantly refined.The mechanical strength and toughness of the blend were synchronously enhanced at a low content SiO2@JNP optimized~0.9 wt%,with the tensile strength,elongation at break and impact strength increased by 17.7%,26.6%and 19.6%,respectively.This enhancement may be attributed to the entanglements between the grafted polymer brushes and individual components that improve the particle-bulk phase affinity and enforce interfacial adhesion. 展开更多
关键词 Compatibilization Janus particles Polystyrene Poly(2-hydroxyethyl methacrylate) SiO2 Interface
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Synthesis of amine-functionalized polystyrene resin-based globular adsorbents for efficient and selective removal of As and Sb species 认领 引用
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作者 Xiao Yang Wenjing Liu +9 位作者 Jiarui Kong Xiangcheng Shan Qiupei Lei Zhipeng Yin Runzeng Liu Min Zhang Qingzhe Zhang Yongguang Yin Chuanyong Jing Yong Cai 《Chinese Chemical Letters》 SCIE CAS CSCD 2025年第11期222-230,共9页
The removal of highly toxic arsenic(As)and antimony(Sb)contaminants in water by adsorption presents a great challenge worldwide.Conventional adsorbents exhibit insufficient efficacy for removing pentavalent oxyanions,... The removal of highly toxic arsenic(As)and antimony(Sb)contaminants in water by adsorption presents a great challenge worldwide.Conventional adsorbents exhibit insufficient efficacy for removing pentavalent oxyanions,As(Ⅴ)and Sb(Ⅴ),which are predominant compared with the trivalent species,As(Ⅲ)and Sb(Ⅲ),in surface waters.Here,we synthesized a novel composite adsorbent,amine-functionalized polystyrene resin loaded with nano TiO2(Am PSd-Ti).The mm-scale spheres showed outstanding adsorption capacities for As(Ⅲ),As(Ⅴ),Sb(Ⅲ),and Sb(Ⅴ)at 73.85,153.29,86.80,and 123.71 mg/g,respectively.Am PSd-Ti exhibited selective adsorption for As and Sb in the presence of Cl-,NO3-,SO42-,and F-.As and Sb were adsorbed by the nano-sized TiO2confined in the porous resin via forming innersphere complexes.The protonated amine groups enhanced the adsorption of As(Ⅴ)and Sb(Ⅴ)by electrostatic attraction and hydrogen bonding,which was confirmed by experimental results and molecular dynamics simulations.Fixed-bed column tests showed breakthrough curves with adsorption capacities of1.38 mg/g(6600 BV)and 6.65 mg/g(1260 BV)upon treating real As-contaminated groundwater and Sbcontaminated industrial wastewater.Our study highlights a feasible strategy by incorporating inorganic metal oxides into organic polymers to achieve highly efficient removal of As and Sb in real-world scenarios. 展开更多
关键词 Polystyrene resins Titanium dioxide Arsenic Antimony Adsorption mechanism
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Enhanced removal of polystyrene nanoplastics by air flotation modified by dodecyltrimethylammonium chloride:Performance and mechanism 认领 引用
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作者 Jinhui Xu Yanting Zhang +6 位作者 Kecheng Wen Xinyu Wang Zhiwei Yang Yuan Huang Guozhong Zheng Lupeng Huang Jing Zhang 《Chinese Chemical Letters》 SCIE CAS CSCD 2025年第5期588-594,共7页
Nanoplastics exhibit greater environmental biotoxicity than microplastics and can be ingested by humans through major routes such as tap water,bottled water and other drinking water.Nanoplastics present a challenge fo... Nanoplastics exhibit greater environmental biotoxicity than microplastics and can be ingested by humans through major routes such as tap water,bottled water and other drinking water.Nanoplastics present a challenge for air flotation due to their minute particle size,negative surface potential,and similar density to water.This study employed dodecyltrimethylammonium chloride(DTAC)as a modifier to improve conventional air flotation,which significantly enhanced the removal of polystyrene nanoplastics(PSNPs).Conventional air flotation removed only 3.09%of PSNPs,while air flotation modified by dodecyltrimethylammonium chloride(DTAC-modified air flotation)increased the removal of PSNPs to 98.05%.The analysis of the DTAC-modified air flotation mechanism was conducted using a combination of instruments,including a zeta potential analyzer,contact angle meter,laser particle size meter,high definition camera,scanning electron microscope(SEM),energy dispersive spectrometer(EDS)and Fourier transform infrared spectrometer(FTIR).The results indicated that the incorporation of DTAC reversed the electrostatic repulsion between bubbles and PSNPs to electrostatic attraction,significantly enhancing the hydrophobic force in the system.This,in turn,improved the collision adhesion effect between bubbles and PSNPs.The experimental results indicated that even when the flotation time was reduced to 7min,the DTACmodified air flotation still achieved a high removal rate of 96.26%.Furthermore,changes in aeration,pH,and ionic strength did not significantly affect the performance of the modified air flotation for the removal of PSNPs.The removal rate of PSNPs in all three water bodies exceeded 95%.The DTAC-modified air flotation has excellent resistance to interference from complex conditions and shows great potential for practical application. 展开更多
关键词 Polystyrene nanoplastics Dodecyltrimethylammonium chloride Modified air flotation Mechanism Effectiveness and stability
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The Influence of Visible Light on the Consumption Rate of Expanded Polystyrene by Zophobas morio Larvae 认领 引用
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作者 Tyler J. Ferenz 《Advances in Entomology》 2025年第1期107-119,共13页
The process of disposing of expanded polystyrene (EPS) is by burning it in municipal incinerators. This process gives off EPS microplastics, which can find their way into water, food, blood, and major organ systems. Z... The process of disposing of expanded polystyrene (EPS) is by burning it in municipal incinerators. This process gives off EPS microplastics, which can find their way into water, food, blood, and major organ systems. Zophobas morio larvae are capable of consuming and breaking down EPS within their digestive tracts by minimizing the spread of microplastics. Studies of the consumption of EPS by Z. morio larvae are typically conducted under white or no visible light treatments. This study tested whether the color of visible light influenced the consumption rate of EPS by Z. morio larvae. If Z. morio larvae consume EPS under visible light, then visible light will influence the amount of EPS consumed. If results suggest that the consumption rate is influenced by visible light colors, then Z. morio larvae could be a solution for recycling EPS. This study’s procedure placed Z. morio larvae into 25 jars under one of six visible light treatments of red, yellow, green, blue, white, and no visible light. Each jar contained a pre-weighed block of EPS and six Z. morio larvae. After two weeks, the Z. morio larvae were removed from the jars, and the difference between each pre-weighed EPS block and the weight of the same partially consumed block was recorded in three trials. The data indicates that green and blue visible light treatments resulted in the greatest amount of EPS consumed by Z. morio larvae while the red and yellow had the least amount of EPS consumed by the Z. morio larvae. In conclusion, results indicate that green and blue visible light, compared to the no visible light treatment, could be used to influence the Z. morio larvae to consume more EPS. Green and blue visible light and Z. morio larvae could make the recycling process of EPS more environmentally friendly when used in households or by local environmental organizations. 展开更多
关键词 Zophobas morio Z. morio Superworm Larvae Visible Light Expanded Polystyrene EPS Styrofoam Consumption Rate Pollution Recycling Nanoplastics Microplastics
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HALOMETHYLATION OF POLYSTYRENE AND SUBSEQUENT PYRIDINATION VIA A HOMOLYTIC PATHWAY 认领 引用 被引量：5
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作者 Sad Moulay Nadia Mehdi 《Chinese Journal of Polymer Science》 SCIE EI CAS 2006年第6期627-635,共9页
Chloromethylation of polystyrene （PS） with two different chloromethylating systems methylalhionyl chloride and paraformaldehyderimethylchlorosilane was studied. Soluble chloromethylated polystyrene with a degree of ... Chloromethylation of polystyrene （PS） with two different chloromethylating systems methylalhionyl chloride and paraformaldehyderimethylchlorosilane was studied. Soluble chloromethylated polystyrene with a degree of substitution of 89% was obtained. The Conant-Finkelstein reaction on the chloromethylated PS afforded soluble iodomethylated polystyrene with a degree of substitution as high as 96%. The reaction conditions of Minisci were employed to radically pyridinate PS via its iodomethylated derivative. Polyelectrolytes were formed which could be converted to normal polymers by treatment with a 20% aqueous solution of NaOH. 展开更多
关键词 Chloromethylated polystyrene Conditions of Minisci Iodomethylated polystyrene Pyridinated polystyrene.
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Preparation of luminescent polystyrene microspheres via surface-modified route with rare earth(Eu3+ and Tb3+)complexes linked to 2,2'-bipyridine 认领 引用 被引量：10
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作者 Zhen-Xiong Ma Qi-Tao Zhang +3 位作者 Jun-Liang Liu Chang-Hao Yan Ming Zhang Teruhisa Ohno 《Rare Metals》 SCIE EI CAS CSCD 2015年第8期590-594,共5页
Luminescent polystyrene microspheres were easily fabricated from poly(styrene-co-methacrylic acid)and aqueous RE(III) chloride solution(RE=Eu, Tb) in the presence of 2,20-bipyridine as second ligand. The negative char... Luminescent polystyrene microspheres were easily fabricated from poly(styrene-co-methacrylic acid)and aqueous RE(III) chloride solution(RE=Eu, Tb) in the presence of 2,20-bipyridine as second ligand. The negative charges of carboxyl groups on the surface of microspheres coordinated with rare earth ions at first, such as complexes covalently linked to 2,20-bipyridine, resulting in strong photoluminescence. Various methods, including transmission electron microscope(TEM), scanning electron microscope(SEM), energy dispersive spectroscopy(EDS),Fourier transform infrared spectroscopy(FT-IR), and fluorescence spectrophotometer, were used to characterize the resultant polystyrene composite microspheres. This work highlights the idea that it is facile to synthesis luminescent microspheres by surface-modified method directly. 展开更多
关键词 Luminescent Polystyrene Terbium Europium 2,2’-bipy
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