Environmental Pollution最新文献_第5页

Screening characteristic VOC species, health hazards, and odor pollutants in the grain and oilseed milling industry of China

IF 7.6 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2025-02-12 DOI: 10.1016/j.envpol.2025.125837

Xia Yang , Ying Liu , Jiale Fan , Gexiang Chen , Ziwei Mo , Xiongbo Chen

Grain and oilseed milling industries are significant sources of VOCs, leading to substantial human health risks and odor pollution. However, the VOC emission remain inadequately characterized, hindering the development of effective pollution mitigation strategies. VOC samples were collected discharged from the rapeseed oil, sesame oil, soybean oil, and wheat flour manufacturing workshops in the Pearl River Delta, China. The VOC concentrations and emission profiles were evaluated, and VOC concentrations in a nearby residential area were simulated using the CALPUFF dispersion model for health risk and odor assessments.

The results revealed substantial variations in both VOC concentrations (0.4–8.3 mg m⁻³) and compositions among the different workshops. N-hexane was the predominant species in the extraction and refining processes at rapeseed oil (91.17%) and soybean oil factories (86.25%). Carbon disulfide (50.24%) and dimethyl sulfide (51.48%) were also important in the rapeseed oil workshop, while propanone (24.66–45.35%) was the major species in the sesame oil factory. In the wheat flour factory, the main VOCs were ethyl acetate (40.04%) and trichloromethane (29.39%). Non-cancer and cancer risks, as indicated by hazard index (HI, 9.74 × 10⁻⁶∼4.75 × 10⁻³) and cancer index (CI, 2.12 × 10⁻⁹∼2.78 × 10⁻⁷), both of which are much lower than the acceptable limits (HI = 1 and CI = 10⁻⁶), suggesting that the factories do not pose a significant health risk to nearby residents. The highest non-cancer risk was found in the extraction workshop of rapeseed oil, while the highest cancer risk was associated with trichloromethane from the fermentation workshop of wheat flour. The rapeseed oil industry posed the highest risk of odor pollution to nearby neighborhoods, with species such as CS₂, dimethyl sulfide, and acrolein contributing most to the odor pollution, resulting in odor indices (OI) ranging from 2 to 31. These findings suggest that the high variability in VOC concentrations and compositions among the workshops is primarily due to production technologies and raw materials.

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引用次数: 0

Atmospheric black carbon (BC) in Hangzhou, China: Temporal variation, source apportionment, and case study of the 19th Asian Games

IF 7.6 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2025-02-12 DOI: 10.1016/j.envpol.2025.125852

Jian Lin , Deming Han , Feng Chen , Xiaorong Zhang , Yang Yang , Lin Yang , Hua Guo , Zechen Yu , Liuyan Cao , Jianbo Shi , Guibin Jiang

Black carbon (BC) is a refractory form of carbonaceous aerosol generated from fossil fuel and biomass incomplete combustion, which has adverse influence on global warming, air pollution, and human health. However, the relative importance of different sources and meteorology on atmospheric BC evolution was not well understood yet, especially during special periods when series of rigorous emission reduction measures were employed. Here, over one–year observation of BC concentration was conducted in urban of Hangzhou, China from Dec. 2022 to Jan. 2024. The annual mean BC concentration was 1.99 ± 1.25 μg/m³, and displayed strong seasonal and diurnal variability. The BC aerosol in winter (−22.7 ± 3.3‰) was 2.3‰ enriched in stable carbon isotope (δ¹³C) compared to BC in summer, this discrepancy indicated enhanced liquid fossil fuel combustion and C₃ plant biomass combustion in cold season. Furthermore, Aethalometer model revealed that BC aerosols in Hangzhou were primarily derived from fossil fuel combustion (73.8 ± 9.1%). Specifically, backward trajectory and potential source contribution factor (PSCF) results suggested that the relative high BC concentrations were mainly originated from local sources direct emission in Yangtze River Delta. The BC concentrations during the 19th Asian Games (1.40 ± 0.87 μg/m³) decreased by 41.9% in comparison with that after Asian Games, which was attributed to the vehicle and industrial emissions reduction, and biomass burning prohibition in Hangzhou. These findings highlight the influence of anthropogenic sources emission on temporal variation of BC in urban agglomeration, which was of benefit to further developing effective emission reduction strategies to mitigate climate change and improve air quality.

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引用次数: 0

Microplastics in municipal solid waste landfill leachate and their removal in treatment units: A perspective of controlled and uncontrolled landfills

IF 7.6 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2025-02-12 DOI: 10.1016/j.envpol.2025.125853

Ayan Lodh , Mozim Shafi , Sudha Goel

Leachate produced from municipal solid waste landfill serves as a potential pathway for microplastics (MPs) release into the environment with a high potential for soil, surface water, and groundwater contamination. These MPs not only persist for longer duration of time in the landfill but also interact with toxic chemical contaminants. These interactions arise from the hydrophobic characteristics and minuscule size of MPs, which absorb a variety of emerging toxic contaminants present in these systems thereby amplifying the risk to surrounding environment. This study was performed to investigate the abundance, characteristics, and pollution risk of MPs in leachate from two contrasting landfill systems in the cities of Chandannagar and Baidyabati, India. A total of 8 leachate samples from an uncontrolled landfill (UCL), i.e., open dump, and 24 samples from different leachate treatment units (LTUs) of a controlled landfill (CL) were evaluated. Particle sizes of 1–5 mm (41.9%) in UCL and 0.025–0.5 mm (46.2%) in CL were predominant. Seven different types of polymers were identified in untreated leachate samples from UCL having concentration 53.4 ± 6.69 p/L (mean ± standard deviation) and in CL 34.7 ± 4.73 p/L. The predominant shapes were films, fragments, and fibers in UCL, whereas fragments and fibers dominated in CL. Polyethylene and polypropylene were the most frequent types of polymers observed in both sites. In CL, collection well, aeration lagoon, and sedimentation pond were used for LTUs, in which overall 83.3% MPs removal was achieved. High removal in LTUs highlights the importance of engineered systems for leachate management. However, optimization of these units is needed for enhanced removal of particles <0.5 mm. For UCL the findings suggest urgent need for implementing basic containment and treatment systems, particularly given their higher pollution risk indices. Varying landfill designs, waste compositions, and weather conditions of specific locations restrict generalisation of the findings to other regions. Therefore, long-term monitoring studies across different geographical and climatic conditions are recommended to develop more comprehensive management strategies.

{"title":"Microplastics in municipal solid waste landfill leachate and their removal in treatment units: A perspective of controlled and uncontrolled landfills","authors":"Ayan Lodh , Mozim Shafi , Sudha Goel","doi":"10.1016/j.envpol.2025.125853","DOIUrl":"10.1016/j.envpol.2025.125853","url":null,"abstract":"<div><div>Leachate produced from municipal solid waste landfill serves as a potential pathway for microplastics (MPs) release into the environment with a high potential for soil, surface water, and groundwater contamination. These MPs not only persist for longer duration of time in the landfill but also interact with toxic chemical contaminants. These interactions arise from the hydrophobic characteristics and minuscule size of MPs, which absorb a variety of emerging toxic contaminants present in these systems thereby amplifying the risk to surrounding environment. This study was performed to investigate the abundance, characteristics, and pollution risk of MPs in leachate from two contrasting landfill systems in the cities of Chandannagar and Baidyabati, India. A total of 8 leachate samples from an uncontrolled landfill (UCL), i.e., open dump, and 24 samples from different leachate treatment units (LTUs) of a controlled landfill (CL) were evaluated. Particle sizes of 1–5 mm (41.9%) in UCL and 0.025–0.5 mm (46.2%) in CL were predominant. Seven different types of polymers were identified in untreated leachate samples from UCL having concentration 53.4 ± 6.69 p/L (mean ± standard deviation) and in CL 34.7 ± 4.73 p/L. The predominant shapes were films, fragments, and fibers in UCL, whereas fragments and fibers dominated in CL. Polyethylene and polypropylene were the most frequent types of polymers observed in both sites. In CL, collection well, aeration lagoon, and sedimentation pond were used for LTUs, in which overall 83.3% MPs removal was achieved. High removal in LTUs highlights the importance of engineered systems for leachate management. However, optimization of these units is needed for enhanced removal of particles <0.5 mm. For UCL the findings suggest urgent need for implementing basic containment and treatment systems, particularly given their higher pollution risk indices. Varying landfill designs, waste compositions, and weather conditions of specific locations restrict generalisation of the findings to other regions. Therefore, long-term monitoring studies across different geographical and climatic conditions are recommended to develop more comprehensive management strategies.</div></div>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"369 ","pages":"Article 125853"},"PeriodicalIF":7.6,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143393963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Chromium accumulation in rice cultivated by distinctive chromium contaminated soils: the effects of geochemical speciation and microbial community

IF 8.9 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2025-02-12 DOI: 10.1016/j.envpol.2025.125847

Huimin Cao, Juan Liu, Pengyuan Deng, Jingzi Beiyuan, Liangzhong Li, Xudong Wei, Zihuang Du, Yuyi Chen, Jiahong Lai, Jin Wang

Chromium (Cr), recognized as a deleterious metal, is ubiquitously present in soil-rice systems, posing a considerable risk to human health through the food chain. However, the controlling factors of Cr transfer from the soil to the paddy system remains largely unknown. This study aimed to examine the transfer patterns of Cr in paddy soil systems during the whole growing periods by comparatively using two series of Cr-contaminated typical agricultural soils. The results showed that the paddy cultivated in lower Cr-contaminated soil exhibited higher bioaccumulation factors (BAFs) due to the greater proportion of bioavailable Cr, in contrast to paddy grown in higher Cr-contaminated soil. Besides, the proportion of residual Cr in the rhizosphere soil notably decreased, and the residual Cr demonstrated a significant negative correlation with the total contents of Fe (p<0.05) and Mn (p<0.05). It suggests that the increase in Fe and Mn content promotes the transformation of Cr into bioavailable forms, thereby intensifying the migration of Cr from the soil to the paddy system. Moreover, it was found that Leptothrix that mediate the formation of manganese oxides and Cellulomonas that reduce Fe(III) may be directly or indirectly involved in the activation of Cr in soil. Microbial species such.as Dechloromonas, Candidatus, Rathayibacter and Vogesella, which showed significant correlations with oxidizable and reducible Cr, may play a pivotal role in modulating the bioavailability of Cr in soil by facilitating oxidation and reduction reactions. All these findings contribute to an enhanced comprehension of the pivotal factors governing the transfer of Cr from paddy soils to rice tissues, shedding light on their roles and functions in this process. They have significant implications for initiating appropriate decisions regarding the management of Cr contamination and the implementation of control strategies in paddy systems.

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引用次数: 0

Green extraction of α-nitroso-β-naphthol from wastewater using hydrophobic deep eutectic solvents: A comprehensive study of efficiency and mechanism

IF 7.6 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2025-02-12 DOI: 10.1016/j.envpol.2025.125855

Jie Qian , Ying-hua Li , Di Luo , Si-nan Liu , Fei Su , Jun-xiang Wang

αNβN is widely used as a typical mineral flotation agent in mining extraction areas, which causes serious environmental risks. In this study, natural hydrophobic deep eutectic solvents (HDES) were innovatively used as extractants to remove αNβN from wastewater. A total of 120 HDES candidates were initially screened via COSMO-RS simulations and validated by batch extraction tests, identifying Dec:Thy (1:3 mol:mol) as the most efficient formulation. Under optimal conditions (pH 7, 25 °C, HDES-to-water ratio 1:50), this HDES achieved over 90% αNβN removal within 1 min of mixing. Characterization (DSC, TGA) confirmed its thermal stability and low viscosity, facilitating rapid phase separation. Reusability experiments further demonstrated that the HDES maintained above 90% extraction efficiency over at least eight consecutive cycles. Molecular dynamics simulations showed that the extraction process was mainly driven by van der Waals forces, with some hydrogen bonding as an aid to enhance the affinity of HDES for αNβN. These findings highlight a green, safe, and effective approach for remediating αNβN-contaminated mining wastewater and underscore the potential of HDES as next-generation extractants for organic pollutants.

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引用次数: 0

Pollution dynamics in the first marine protected area of the Northwestern Arabian Gulf: Environmental assessment and management implications

IF 7.6 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2025-02-12 DOI: 10.1016/j.envpol.2025.125856

Sabeena Farvin Koduvayur Habeebullah, Turki Al Said, Surendraraj Alagarsamy, Nisar Ahamed, Karell Martinez, Abdalla Abusam, Rakhesh Madhusoodhanan, Mustafa Al Shamali, Waleed Al-Zekri, Faiza Al Yamani

Coastal ecosystems, especially in rapidly industrializing regions, are increasingly threatened by pollution, necessitating the establishment of Marine Protected Areas (MPAs) to mitigate such impacts. In the environmentally challenged Northwestern Arabian Gulf (NWAG), the establishment of Sulaibikhat MPA in 2012 represents a critical step toward preserving vulnerable marine habitats. This study provides the first comprehensive evaluation of pollution stress in this MPA, focusing on microbial indicators, total petroleum hydrocarbons (TPH), polycyclic aromatic hydrocarbons (PAHs), organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs), and surfactants in seawater and sediment samples collected from October 2018 to March 2021. Microbial indicators, including total coliforms and Escherichia coli, were within acceptable limits, but sediment contamination with TPH (18.8–1339.7 ppm) far exceeded moderate pollution thresholds. PAH levels were low in seawater but elevated in sediments, revealing both pyrogenic and fresh petroleum contamination. Surfactant concentrations, particularly non-ionic types, exceeded toxicity thresholds for aquatic organisms, signaling significant ecological risk. Trace levels of banned persistent organic pollutants such as Endosulfan II and PCB 74, were detected after June 2019, suggesting ongoing pollution from agricultural and industrial sources. This study highlights the urgent need for targeted pollution control and sustainable management practices to preserve the ecological integrity of the NWAG MPA. The results serve as a baseline for future monitoring and policy formulation, crucial for safeguarding this key marine ecosystem in a region facing escalating environmental challenges.

{"title":"Pollution dynamics in the first marine protected area of the Northwestern Arabian Gulf: Environmental assessment and management implications","authors":"Sabeena Farvin Koduvayur Habeebullah, Turki Al Said, Surendraraj Alagarsamy, Nisar Ahamed, Karell Martinez, Abdalla Abusam, Rakhesh Madhusoodhanan, Mustafa Al Shamali, Waleed Al-Zekri, Faiza Al Yamani","doi":"10.1016/j.envpol.2025.125856","DOIUrl":"10.1016/j.envpol.2025.125856","url":null,"abstract":"<div><div>Coastal ecosystems, especially in rapidly industrializing regions, are increasingly threatened by pollution, necessitating the establishment of Marine Protected Areas (MPAs) to mitigate such impacts. In the environmentally challenged Northwestern Arabian Gulf (NWAG), the establishment of Sulaibikhat MPA in 2012 represents a critical step toward preserving vulnerable marine habitats. This study provides the first comprehensive evaluation of pollution stress in this MPA, focusing on microbial indicators, total petroleum hydrocarbons (TPH), polycyclic aromatic hydrocarbons (PAHs), organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs), and surfactants in seawater and sediment samples collected from October 2018 to March 2021. Microbial indicators, including total coliforms and <em>Escherichia coli</em>, were within acceptable limits, but sediment contamination with TPH (18.8–1339.7 ppm) far exceeded moderate pollution thresholds. PAH levels were low in seawater but elevated in sediments, revealing both pyrogenic and fresh petroleum contamination. Surfactant concentrations, particularly non-ionic types, exceeded toxicity thresholds for aquatic organisms, signaling significant ecological risk. Trace levels of banned persistent organic pollutants such as Endosulfan II and PCB 74, were detected after June 2019, suggesting ongoing pollution from agricultural and industrial sources. This study highlights the urgent need for targeted pollution control and sustainable management practices to preserve the ecological integrity of the NWAG MPA. The results serve as a baseline for future monitoring and policy formulation, crucial for safeguarding this key marine ecosystem in a region facing escalating environmental challenges.</div></div>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"369 ","pages":"Article 125856"},"PeriodicalIF":7.6,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143401669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The common kestrel as an environmental bioindicator of toxic chemicals on Tenerife Island (Canary Islands, Spain)

IF 7.6 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2025-02-12 DOI: 10.1016/j.envpol.2025.125851

Cristian Rial-Berriel , José Carrillo-Hidalgo , Octavio P. Luzardo , Beatriz Martín-Cruz , Manuel Zumbado , Martina Cecchetti , Luis Alberto Henríquez-Hernández

Indirect effects of toxic chemicals, such as persistent organic pollutants (POPs), affect non-target species like apex predators due to bioaccumulation in food webs. The common kestrel (Falco tinnunculus canariensis), an endemic subspecies from the Canary Islands and Madeira, was evaluated as a bioindicator to assess contamination by organic pollutants in Tenerife. A total of 390 liver samples, collected between 2003 and 2021, were analysed for 341 toxic compounds including pesticides, pharmaceuticals, and POPs like PCBs, PBDEs, PAHs and OCPs. Results revealed widespread contamination: 97.7% of kestrels had DDE, and 94.6% had PCB, with congener #180 being the most prevalent. BDE-153 was detected in 32.3% of samples and PAH, predominantly naphthalene, in 36.9%. Additionally, we identified four fungicides, five insecticides, one herbicide, and the acaricide tetradifon, marking the first report of these substances in raptors globally. Generalised Linear Models (GLM) and Linear Models (LM) indicated that adults had significantly higher levels of OCP and PCB, and PBDE exposure. Males exhibited significantly higher levels of PCBs and were more likely to be exposed to PBDEs. A decline in the concentrations and presence of OCPs, PCBs, and PBDEs was observed during the second study period (2003–2009 vs. 2017–2021). For PAHs, the null model was the best fit, indicating that the factors examined (sex, age, human density, cultivated area or period) did not have a significantly influence on exposure. This comprehensive, long-term study, represents a pioneering investigation in the Canary Islands, demonstrating the utility of the common kestrel as a bioindicator of environmental pollution.

{"title":"The common kestrel as an environmental bioindicator of toxic chemicals on Tenerife Island (Canary Islands, Spain)","authors":"Cristian Rial-Berriel , José Carrillo-Hidalgo , Octavio P. Luzardo , Beatriz Martín-Cruz , Manuel Zumbado , Martina Cecchetti , Luis Alberto Henríquez-Hernández","doi":"10.1016/j.envpol.2025.125851","DOIUrl":"10.1016/j.envpol.2025.125851","url":null,"abstract":"<div><div>Indirect effects of toxic chemicals, such as persistent organic pollutants (POPs), affect non-target species like apex predators due to bioaccumulation in food webs. The common kestrel (<em>Falco tinnunculus canariensis</em>), an endemic subspecies from the Canary Islands and Madeira, was evaluated as a bioindicator to assess contamination by organic pollutants in Tenerife. A total of 390 liver samples, collected between 2003 and 2021, were analysed for 341 toxic compounds including pesticides, pharmaceuticals, and POPs like PCBs, PBDEs, PAHs and OCPs. Results revealed widespread contamination: 97.7% of kestrels had DDE, and 94.6% had PCB, with congener #180 being the most prevalent. BDE-153 was detected in 32.3% of samples and PAH, predominantly naphthalene, in 36.9%. Additionally, we identified four fungicides, five insecticides, one herbicide, and the acaricide tetradifon, marking the first report of these substances in raptors globally. Generalised Linear Models (GLM) and Linear Models (LM) indicated that adults had significantly higher levels of OCP and PCB, and PBDE exposure. Males exhibited significantly higher levels of PCBs and were more likely to be exposed to PBDEs. A decline in the concentrations and presence of OCPs, PCBs, and PBDEs was observed during the second study period (2003–2009 vs. 2017–2021). For PAHs, the null model was the best fit, indicating that the factors examined (sex, age, human density, cultivated area or period) did not have a significantly influence on exposure. This comprehensive, long-term study, represents a pioneering investigation in the Canary Islands, demonstrating the utility of the common kestrel as a bioindicator of environmental pollution.</div></div>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"369 ","pages":"Article 125851"},"PeriodicalIF":7.6,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143401668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Embryonic BPF exposure induces neurodevelopmental and neurobehavioral toxicity by affecting neural stem cell proliferation in Drosophila

IF 7.6 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2025-02-11 DOI: 10.1016/j.envpol.2025.125844

Binquan Wang , Ziyi Yang , Ke Zhang , Ling Wang , Yuanyuan Song , Qian Li , Mingkuan Sun

BPF is a ubiquitous environmental chemical that has been shown to affect neurodevelopmental toxicity from animals to humans. Whether BPF exposure affects neural stem cell proliferation and differentiation is unknown. Here, we utilized a method of permeabilization of Drosophila embryos to analyze the effects of exposure to 0.5 mM, 1 mM, and 2 mM BPF on the proliferation and differentiation of neural stem cells. Our results showed that BPF exposure reduced the number of neuroblasts and intermediate neural progenitors during the embryonic stage, which caused the neuron/glial cell ratio to be out of balance, with a decrease in the number of neurons and an increase in the number of glial cells. BPF exposure caused neurotoxicity by reducing the activities of the antioxidant enzymes CAT and SOD, the downregulation of the transcriptional levels of oxidative stress-related genes, which triggered oxidative damage. As a result, embryonic BPF exposure affected the development of the neuromuscular junctions (NMJs) by reducing the number of axon branches and synaptic buttons, decreasing the number of peristaltic contractions, and reducing larval locomotion. In conclusion, our results demonstrate that embryonic BPF exposure disrupts neural stem cell proliferation, causing neurodevelopmental toxicity and abnormal larval behavior.

{"title":"Embryonic BPF exposure induces neurodevelopmental and neurobehavioral toxicity by affecting neural stem cell proliferation in Drosophila","authors":"Binquan Wang , Ziyi Yang , Ke Zhang , Ling Wang , Yuanyuan Song , Qian Li , Mingkuan Sun","doi":"10.1016/j.envpol.2025.125844","DOIUrl":"10.1016/j.envpol.2025.125844","url":null,"abstract":"<div><div>BPF is a ubiquitous environmental chemical that has been shown to affect neurodevelopmental toxicity from animals to humans. Whether BPF exposure affects neural stem cell proliferation and differentiation is unknown. Here, we utilized a method of permeabilization of <em>Drosophila</em> embryos to analyze the effects of exposure to 0.5 mM, 1 mM, and 2 mM BPF on the proliferation and differentiation of neural stem cells. Our results showed that BPF exposure reduced the number of neuroblasts and intermediate neural progenitors during the embryonic stage, which caused the neuron/glial cell ratio to be out of balance, with a decrease in the number of neurons and an increase in the number of glial cells. BPF exposure caused neurotoxicity by reducing the activities of the antioxidant enzymes CAT and SOD, the downregulation of the transcriptional levels of oxidative stress-related genes, which triggered oxidative damage. As a result, embryonic BPF exposure affected the development of the neuromuscular junctions (NMJs) by reducing the number of axon branches and synaptic buttons, decreasing the number of peristaltic contractions, and reducing larval locomotion. In conclusion, our results demonstrate that embryonic BPF exposure disrupts neural stem cell proliferation, causing neurodevelopmental toxicity and abnormal larval behavior.</div></div>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"369 ","pages":"Article 125844"},"PeriodicalIF":7.6,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143393964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Importance of sub-23 nm particles in traffic environments: Particle number emission factors and extrathoracic deposition doses

IF 7.6 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2025-02-11 DOI: 10.1016/j.envpol.2025.125835

Henna Lintusaari , Teemu Lepistö , Sanna Saarikoski , Laura Salo , Ville Silvonen , Luis M.F. Barreira , Minna Aurela , Jussi Hoivala , Lassi Markkula , Jakub Ondracek , Tina Wahle , Michal Vojtisek-Lom , Jan Topinka , Roel P.F. Schins , Pasi Jalava , Hilkka Timonen , Katja M. Kanninen , Topi Rönkkö

New research suggests that exposure to ultrafine particles (UFPs; particle diameter d_p < 100 nm) is particularly harmful to brain health. One pathway into the body is via deposition in the respiratory system, where the smallest UFPs deposit efficiently in human extrathoracic airways. Traffic is a major source of these particles, yet sub-23 nm (d_p < 23 nm) particles are currently unregulated in engine emission testing worldwide, including the stringent requirements of the European Union, nor are there requirements for ambient monitoring. In this study, we report size-resolved particle number emission factors (EFs) for traffic and estimates of extrathoracic dose rates of sub-23 nm particles. The EFs and dose rates are based on measurements conducted in different urban environments, including roads, tunnels, an airport, and a riverside, in two Central European cities (Düsseldorf and Prague) from March to April 2022. A key difference between the cities is that Düsseldorf has a low-emission zone in its central area and a newer vehicle fleet compared to Prague. Overall, traffic-influenced sites had large EFs for sub-23 nm particles. In the highway and tunnel environments, EFs of particles with d_p > 2.5 nm were between 2 and 18 times greater than the EFs of particles with d_p > 23 nm. Near the airport, the EF of particles with d_p > 23 nm was already high, being 2–9 times higher than in other environments. The number concentrations of sub-23 nm particles varied significantly within the studied cities, and dose rates (measured in billions of particles per hour) differed by up to a factor of ten or more depending on the location.

{"title":"Importance of sub-23 nm particles in traffic environments: Particle number emission factors and extrathoracic deposition doses","authors":"Henna Lintusaari , Teemu Lepistö , Sanna Saarikoski , Laura Salo , Ville Silvonen , Luis M.F. Barreira , Minna Aurela , Jussi Hoivala , Lassi Markkula , Jakub Ondracek , Tina Wahle , Michal Vojtisek-Lom , Jan Topinka , Roel P.F. Schins , Pasi Jalava , Hilkka Timonen , Katja M. Kanninen , Topi Rönkkö","doi":"10.1016/j.envpol.2025.125835","DOIUrl":"10.1016/j.envpol.2025.125835","url":null,"abstract":"<div><div>New research suggests that exposure to ultrafine particles (UFPs; particle diameter <em>d</em><sub><em>p</em></sub> < 100 nm) is particularly harmful to brain health. One pathway into the body is via deposition in the respiratory system, where the smallest UFPs deposit efficiently in human extrathoracic airways. Traffic is a major source of these particles, yet sub-23 nm (<em>d</em><sub><em>p</em></sub> < 23 nm) particles are currently unregulated in engine emission testing worldwide, including the stringent requirements of the European Union, nor are there requirements for ambient monitoring. In this study, we report size-resolved particle number emission factors (EFs) for traffic and estimates of extrathoracic dose rates of sub-23 nm particles. The EFs and dose rates are based on measurements conducted in different urban environments, including roads, tunnels, an airport, and a riverside, in two Central European cities (Düsseldorf and Prague) from March to April 2022. A key difference between the cities is that Düsseldorf has a low-emission zone in its central area and a newer vehicle fleet compared to Prague. Overall, traffic-influenced sites had large EFs for sub-23 nm particles. In the highway and tunnel environments, EFs of particles with <em>d</em><sub><em>p</em></sub> > 2.5 nm were between 2 and 18 times greater than the EFs of particles with <em>d</em><sub><em>p</em></sub> > 23 nm. Near the airport, the EF of particles with <em>d</em><sub><em>p</em></sub> > 23 nm was already high, being 2–9 times higher than in other environments. The number concentrations of sub-23 nm particles varied significantly within the studied cities, and dose rates (measured in billions of particles per hour) differed by up to a factor of ten or more depending on the location.</div></div>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"369 ","pages":"Article 125835"},"PeriodicalIF":7.6,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143393710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Screening of estrogen receptor activity of per- and polyfluoroalkyl substances based on deep learning and in vivo assessment

IF 7.6 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2025-02-11 DOI: 10.1016/j.envpol.2025.125843

Xudi Pang, Miao Lu, Ying Yang, Huiming Cao, Yuzhen Sun, Zhen Zhou, Ling Wang, Yong Liang

Over the past decades, exposure to per- and polyfluoroalkyl substances (PFAS), a group of synthetic chemicals notorious for their environmental persistence, has been shown to pose increased health risks. Despite that some PFAS were reported to have endocrine-disrupting toxicity in previous studies, accurate prediction models based on deep learning and the underlying structural characteristics related to the effect of molecular fluorination remain limited. To address these issues, we proposed a stacking deep learning architecture, GXDNet, that integrates molecular descriptors and molecular graphs to predict the estrogen receptor α (ERα) activities of compounds, enhancing the generalization ability compared to previous models. Subsequently, we screened the ERα activity of 10,067 PFAS molecules using the GXDNet model and identified potential ERα binders. The representative PFAS molecules with the top docking scores showed that the introduction of fluorinated alkane chains significantly increased the binding affinities of parent molecules with ERα, suggesting that the combination of phenol structural fragments and fluorinated alkane chains has a synergistic effect in improving the binding capacity of the ligands to ERα. The binding modes, SHapley Additive Explanations analysis, and attention map emphasized the importance of π-π stacking and hydrogen bonding interactions with the phenol group, while the fluorinated alkane chain enhanced the interaction with the hydrophobic amino acids of the active pocket. Experimental validation using zebrafish models further confirmed the ERα activity of the representative PFAS molecules. Overall, the current computational workflow is beneficial for the toxicological screening of emerging PFAS and accelerating the development of eco-friendly PFAS molecules, thereby mitigating the environmental and health risks associated with PFAS exposure.

{"title":"Screening of estrogen receptor activity of per- and polyfluoroalkyl substances based on deep learning and in vivo assessment","authors":"Xudi Pang, Miao Lu, Ying Yang, Huiming Cao, Yuzhen Sun, Zhen Zhou, Ling Wang, Yong Liang","doi":"10.1016/j.envpol.2025.125843","DOIUrl":"10.1016/j.envpol.2025.125843","url":null,"abstract":"<div><div>Over the past decades, exposure to per- and polyfluoroalkyl substances (PFAS), a group of synthetic chemicals notorious for their environmental persistence, has been shown to pose increased health risks. Despite that some PFAS were reported to have endocrine-disrupting toxicity in previous studies, accurate prediction models based on deep learning and the underlying structural characteristics related to the effect of molecular fluorination remain limited. To address these issues, we proposed a stacking deep learning architecture, GXDNet, that integrates molecular descriptors and molecular graphs to predict the estrogen receptor α (ERα) activities of compounds, enhancing the generalization ability compared to previous models. Subsequently, we screened the ERα activity of 10,067 PFAS molecules using the GXDNet model and identified potential ERα binders. The representative PFAS molecules with the top docking scores showed that the introduction of fluorinated alkane chains significantly increased the binding affinities of parent molecules with ERα, suggesting that the combination of phenol structural fragments and fluorinated alkane chains has a synergistic effect in improving the binding capacity of the ligands to ERα. The binding modes, SHapley Additive Explanations analysis, and attention map emphasized the importance of π-π stacking and hydrogen bonding interactions with the phenol group, while the fluorinated alkane chain enhanced the interaction with the hydrophobic amino acids of the active pocket. Experimental validation using zebrafish models further confirmed the ERα activity of the representative PFAS molecules. Overall, the current computational workflow is beneficial for the toxicological screening of emerging PFAS and accelerating the development of eco-friendly PFAS molecules, thereby mitigating the environmental and health risks associated with PFAS exposure.</div></div>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"369 ","pages":"Article 125843"},"PeriodicalIF":7.6,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143385485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0