Environmental Science & Technology Letters Environ.最新文献_第4页

New Methodology for Characterizing Ion Permeability and Selectivity of Ion-Exchange Membranes 表征离子交换膜离子渗透性和选择性的新方法

IF 8.8 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-07-18 DOI: 10.1021/acs.estlett.5c00597

Junwei Zhang, Amit N. Shocron, Victoria Meola, Camille Violet, Zhongren Jiao, Paloma I. Lenz, Yanghua Duan, Ruoyu Wang, Arpita Iddya and Menachem Elimelech*,

{"title":"New Methodology for Characterizing Ion Permeability and Selectivity of Ion-Exchange Membranes","authors":"Junwei Zhang, Amit N. Shocron, Victoria Meola, Camille Violet, Zhongren Jiao, Paloma I. Lenz, Yanghua Duan, Ruoyu Wang, Arpita Iddya and Menachem Elimelech*, ","doi":"10.1021/acs.estlett.5c00597","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00597","url":null,"abstract":"Ion-exchange membranes (IEMs) are critical to electrochemical ion-separation technologies for environmental and energy applications. Although advancements in separation performance have been frequently reported, significant challenges in evaluating mixed-salt IEM performance under electro-driven conditions remain largely overlooked. Here, we present a new method for the rapid and standardized characterization of ion transport properties for IEMs in mixed-salt systems. Using a modified Goldman-Hodgkin-Katz equation, we demonstrate that individual ion permeability can be obtained from IEM conductance measurements with mixed-salt linear sweep voltammetry experiments. Under low-current conditions, the ion permeability ratio can be converted into different metrics for quantification of ion–ion selectivity including current-based and flux-based selectivity. Our findings also reveal substantial differences between ion transport properties of IEMs under single-salt and mixed-salt conditions, highlighting the critical role of competing ions in transport experiments. Overall, this new approach provides an efficient framework to evaluate IEM performance in environmentally relevant conditions, facilitating cross-membrane performance comparison and establishing the foundation to elucidate the structure-property-performance relationships for IEMs in mixed-salt systems.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 8","pages":"1082–1088"},"PeriodicalIF":8.8,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144813422","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

Retrospective Analysis of Drinking Water Microcosm Microbiomes Reveals an Apparent Antagonistic Relationship between Neochlamydia and Legionella 饮用水微生物群落的回顾性分析揭示了新衣原体和军团菌之间明显的拮抗关系

IF 8.8 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-07-17 DOI: 10.1021/acs.estlett.5c00590

Fernando A. Roman Jr., Thomas Byrne, Rebekah L. Martin, Didier Mena-Aguilar, Rania E. Smeltz, Rachel Finkelstein, Amy Pruden and Marc A. Edwards*,

{"title":"Retrospective Analysis of Drinking Water Microcosm Microbiomes Reveals an Apparent Antagonistic Relationship between Neochlamydia and Legionella","authors":"Fernando A. Roman Jr., Thomas Byrne, Rebekah L. Martin, Didier Mena-Aguilar, Rania E. Smeltz, Rachel Finkelstein, Amy Pruden and Marc A. Edwards*, ","doi":"10.1021/acs.estlett.5c00590","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00590","url":null,"abstract":"Legionella pneumophila (Lp) can sometimes establish in drinking water microbial communities and infect individuals inhaling contaminated aerosols. The premise plumbing portion of the drinking water distribution system is often especially vulnerable to Lp growth. Innovative approaches to intentionally manipulate the microbial ecology to control Lp have been proposed but remain elusive. Here, we retrospectively analyzed 16S rRNA gene amplicon sequences and droplet digital PCR data in samples derived from prior drinking water studies, wherein some inexplicable stochastic variations in the Lp occurrence were observed in replicate microcosms. We discovered an apparent antagonistic relationship between Legionella and Neochlamydia. This relationship was noted across three water sources (Flint, Detroit, and Blacksburg) and was at least partially mediated by the presence of copper, through either copper pipes or a dosed range of 0–2000 μg/L total copper. The observations of this study, which was conducted under realistic drinking water conditions harboring mixed microbial communities, are consistent with recent pure culture studies reporting that Legionella amoebic uptake may be inhibited when Neochlamydia are established as amoebal endosymbionts. The findings may help explain the apparent stochastic behavior of Lp in field and research settings and may open a door to new engineered ecological control strategies for Lp.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 8","pages":"990–996"},"PeriodicalIF":8.8,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acs.estlett.5c00590","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144813652","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

Enhancing the Detectable Chemical Space in an Effluent-Dominated Stream: Non-Target Analysis Reveals Potential Rapid In Situ Product Formation 在以流出物为主的流中增强可检测的化学空间：非目标分析揭示了潜在的快速原位产物形成

IF 8.8 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-07-17 DOI: 10.1021/acs.estlett.5c00509

Alyssa L. Mianecki, and , Gregory H. LeFevre*,

{"title":"Enhancing the Detectable Chemical Space in an Effluent-Dominated Stream: Non-Target Analysis Reveals Potential Rapid In Situ Product Formation","authors":"Alyssa L. Mianecki,  and , Gregory H. LeFevre*, ","doi":"10.1021/acs.estlett.5c00509","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00509","url":null,"abstract":"Effluent-dominated streams are increasingly common in temperate regions and have potential for adverse ecological and human health effects. Nontarget analysis (NTA) using high resolution mass spectrometry (HRMS) is an emerging approach to examine complex chemical mixtures in the environment. Here, we leveraged archived samples previously analyzed for 154 target contaminants in a well-studied temperate region effluent-dominated stream and compared target results with suspected compounds from NTA. NTA enhanced the detectable chemical space by 20 times compared to target analysis alone. Target analysis was biased toward larger mass contaminants compared to the compounds detected with NTA, indicating that target analysis was not fully representative of the compound distribution for the effluent-impacted waters. Hierarchical cluster analysis exposed clusters of compounds significantly upregulated at the effluent/stream mixing zone, revealing evidence of a novel phenomenon wherein transformation product and/or metabolite formation appears to occur rapidly in situ. Additionally, an exposure-driven NTA retrospective analysis uncovered upregulation of 7endocrine-disrupting compounds that may explain prior bioassay results. These findings have urgent implications for ecosystems and downstream communities experiencing de facto wastewater reuse conditions. NTA offers enhanced characterization of complex mixtures in effluent-dominated streams and can reveal novel mixture dynamics otherwise masked when employing target analysis alone.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 8","pages":"1038–1045"},"PeriodicalIF":8.8,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acs.estlett.5c00509","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144813658","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

Microplastics Can Inhibit the Mucus Production and Regenerative Capability of the Marine Polychaete Neanthes acuminata 微塑料对海洋多毛藻粘液生成和再生能力的抑制作用

IF 8.8 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-07-16 DOI: 10.1021/acs.estlett.5c00549

Md. Khorshed Alam*, Mana Ito, Shin-ichi Kuroda and Katsutoshi Ito*,

{"title":"Microplastics Can Inhibit the Mucus Production and Regenerative Capability of the Marine Polychaete Neanthes acuminata","authors":"Md. Khorshed Alam*, Mana Ito, Shin-ichi Kuroda and Katsutoshi Ito*, ","doi":"10.1021/acs.estlett.5c00549","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00549","url":null,"abstract":"Marine sediments have been considered as bulk deposits of terrestrial and freshwater-originating plastics that support diverse invertebrate communities with crucial ecosystem functions. Despite ubiquitous distribution and essential function in the food web, knowledge of polychaetes’ physiological responses and functions under microplastic pollution scenarios is largely limited. Sediment-dwelling polychaete species Neanthes acuminata (i.e., Na) is crucial to the structure and function of marine ecosystems, particularly in bioturbation and organic decomposition. The present study investigated the impact of artificially aged and fragmented polyethylene microplastics (i.e., afPE-MPs) on growth, mucus production, and regenerative capability of Na. Our study demonstrates that afPE-MP does not directly affect the growth and survival of Na juveniles over 10 days. Instead, afPE-MP treatments could inhibit the growth pattern to a level that hinders mucus production. This study developed a regeneration assay for Na and reports for the first time that the presence of afPE-MP could adversely affect posterior regenerative capability at an environmentally relevant concentration of 0.1 g/L. The impact of afPE-MPs on physiological processes, including regeneration, could provide crucial information that would aid future researchers and policymakers in formulating aquatic conservation plans by prioritizing critically important habitats for the sustainability of ecosystem services.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 8","pages":"1046–1053"},"PeriodicalIF":8.8,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144813396","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

Nationwide Occurrence of Multiple Classes of Emerging Vulcanization Accelerators in Municipal Sludge from 30 Provincial-Level Regions across China 全国30个省级地区城市污泥中出现多类新型硫化促进剂的情况

IF 8.8 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-07-16 DOI: 10.1021/acs.estlett.5c00569

Li Liu, Bibai Du, Jiali Ge, Xiangyu Hou, Benyu He, Huan Yi and Lixi Zeng*,

{"title":"Nationwide Occurrence of Multiple Classes of Emerging Vulcanization Accelerators in Municipal Sludge from 30 Provincial-Level Regions across China","authors":"Li Liu, Bibai Du, Jiali Ge, Xiangyu Hou, Benyu He, Huan Yi and Lixi Zeng*, ","doi":"10.1021/acs.estlett.5c00569","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00569","url":null,"abstract":"Vulcanization accelerators (VAs) are additive chemicals used in synthetic rubber, yet knowledge of their occurrence in municipal sludge on a large geographical scale remains lacking. Here, we implemented the first nationwide survey of eight classes of VAs in municipal sludge from 30 provincial-level regions across China. All eight classes of VAs were detected, with thiazoles, guanidines, and xanthates identified as the predominant groups, followed by thiurams, dithiocarbamates, thioureas, sulfenamides, and others. A total of 42 out of 44 target VAs were detected, with 32 being newly identified and 20 exhibiting a detection frequency exceeding 60%. The total concentrations of all detectable VAs (∑VAs) in the nationwide sludge samples ranged from 333 to 8040 ng/g, with a median value at 799 ng/g. A clear geographical distribution trend was observed, with significantly higher levels of ∑VAs in East China than Central and West China (p < 0.05). The national annual emission flux of ∑VAs into sludge in China is estimated at 21.7 tons/year, with 3.47 tons/year being directly released into sludge-amended farmland soils. Our study comprehensively revealed nationwide occurrence and prevalence of multiple classes of VAs in Chinese municipal sludge, highlighting the emerging concern on these new pollutants.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 8","pages":"1054–1061"},"PeriodicalIF":8.8,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144813458","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

Air Quality Impacts of the January 2025 Los Angeles Wildfires: Insights from Public Data Sources 2025年1月洛杉矶野火对空气质量的影响：来自公共数据来源的见解

IF 8.8 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-07-14 DOI: 10.1021/acs.estlett.5c00486

Claire Schollaert*, Rachel Connolly, Lara Cushing, Michael Jerrett, Tianjia Liu and Miriam Marlier,

{"title":"Air Quality Impacts of the January 2025 Los Angeles Wildfires: Insights from Public Data Sources","authors":"Claire Schollaert*, Rachel Connolly, Lara Cushing, Michael Jerrett, Tianjia Liu and Miriam Marlier, ","doi":"10.1021/acs.estlett.5c00486","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00486","url":null,"abstract":"Smoke from the Los Angeles (LA) wildfires that started on January 7, 2025 caused severe air quality impacts across the region. Government agencies released guidance on assessing personal risk, pointing to publicly available data platforms that present information from monitoring networks and smoke plume outlines. Additional satellite-based products provide supporting information during dynamic wildfire smoke events. We evaluate the regional air quality impacts of the fires through publicly available fine particulate matter (PM2.5) and nitrogen dioxide (NO2) observations from regulatory monitoring stations, PurpleAir low-cost sensors, the TEMPO and TROPOMI satellite sensors, and Hazard Mapping System (HMS) Smoke Plumes during this multifire event. The most extreme air quality impacts were observed on January 8–9, particularly in the southern half of LA county, where daily average PM2.5 concentrations at the downtown LA regulatory monitor reached 101.7 μg/m3 and 52.3 μg/m3 in Compton. On January 8th, 12 PurpleAir sensors located closer to burn areas exceeded daily PM2.5 concentrations of 225 μg/m3. While smoke impacts were largely consistent across all data sources, differences in the spatiotemporal, including vertical, resolution of each product may affect interpretability for end users. This study underscores the importance of integrating multiple air quality data sources and improving accessibility to enhance public health messaging during wildfire events.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 8","pages":"911–917"},"PeriodicalIF":8.8,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acs.estlett.5c00486","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144813604","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

Carbon Capture and Storage for Small-to-Medium Biorefineries: Promising Carbon Removal Solution with Economic Challenges 中小型生物精炼厂的碳捕获和储存：有前途的碳去除解决方案与经济挑战

IF 8.8 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-07-14 DOI: 10.1021/acs.estlett.5c00312

Mengyao Yuan, and , Wenqin Li*,

{"title":"Carbon Capture and Storage for Small-to-Medium Biorefineries: Promising Carbon Removal Solution with Economic Challenges","authors":"Mengyao Yuan,  and , Wenqin Li*, ","doi":"10.1021/acs.estlett.5c00312","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00312","url":null,"abstract":"Carbon capture and storage (CCS) integrated with biomass-based fuel production can provide cost-effective biomass carbon removal and storage (BiCRS) and produce high-value bioproducts, such as sustainable aviation fuels. To accelerate BiCRS deployment, it is crucial to quantify the costs of CCS integration, particularly for small- and medium-scale biorefineries that are representative of early-stage deployment. Existing studies tend to focus on plant sizes that are orders-of-magnitude larger than early-stage installations, possibly underestimating CCS costs for small-to-medium biorefineries. We show that the capture, transport, and storage costs to maximize CO2 removal from a 526 dry tonne per day (tpd) biomass gasification plant (largest existing size) could be 13–47% higher than costs for a typical modeled plant size (2000 dry tpd). The higher cost estimates are driven by less favorable economies of scale and realistic assumptions about the availability of affordable CO2 transport infrastructure with both drivers broadly applicable to other BiCRS technologies. Compliance and voluntary carbon markets could incentivize biorefinery CCS, but both carry a high degree of uncertainty. These findings highlight that sufficient and reliable financial mechanisms would be essential to unlocking the full CO2 removal potential of biorefineries and facilitating BiCRS scale-up.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 8","pages":"945–950"},"PeriodicalIF":8.8,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144813535","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

Near-Real-Time Emission Characterization for Major Industrial Sectors Using Multisatellite and Base-Year Emission Inventories 基于多卫星和基准年排放清单的主要工业部门近实时排放表征

IF 8.8 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-07-14 DOI: 10.1021/acs.estlett.5c00462

Jiashu Ye, Huilin Liu, Tong Wu, Weiwen Chen, Zhijiong Huang, Manni Zhu, Yuanqian Xu, Zhuangmin Zhong, Duohong Chen and Junyu Zheng*,

{"title":"Near-Real-Time Emission Characterization for Major Industrial Sectors Using Multisatellite and Base-Year Emission Inventories","authors":"Jiashu Ye, Huilin Liu, Tong Wu, Weiwen Chen, Zhijiong Huang, Manni Zhu, Yuanqian Xu, Zhuangmin Zhong, Duohong Chen and Junyu Zheng*, ","doi":"10.1021/acs.estlett.5c00462","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00462","url":null,"abstract":"Near-real-time (NRT) characterization of industrial emissions is crucial for tracking dynamic emission patterns and informing timely regulatory responses. However, existing methods rely heavily on continuous emission monitoring systems (CEMS), which are often limited in data availability, coverage and data quality. This study introduces a novel approach that integrates multisatellite fire radiative power (FRP) observations with a base-year emission inventory (BY-EI) to improve source identification and emission estimation. Compared to previous methods, our multisatellite strategy increased the number of identified industrial point sources by 38%. Fire radiative energy (FRE)-emission response models were developed by linking satellite-derived FRE with emission data from identified sources. These models enabled daily emission estimates with strong performance, especially for SO2 (R2 = 0.895) and NOx (R2 = 0.855). For sources without direct FRP detection, sectoral FRE-based temporal profiles captured emission variability effectively (Pearson’s r > 0.6, mean square errors (MSE) at 10–5 level). This approach successfully identified high-emission industrial sectors, including cement, ceramics, and steel industries, expanding the scope of detectable sources while reducing reliance on CEMS data. The findings provide a new framework for NRT industrial emission characterization, supporting the timely updating of industrial emissions and refined pollution control strategies and decision-making.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 8","pages":"982–989"},"PeriodicalIF":8.8,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144813537","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

Long-Term Observations Reveal Enhanced Nighttime Formation of Nitrated PAHs Following Primary Emission Reduction 长期观测显示，在初次排放减少后，夜间硝化多环芳烃的形成增强

IF 8.8 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-07-11 DOI: 10.1021/acs.estlett.5c00530

Xiaodi Shi, Xinghua Qiu*, Ailin Li, Peiwen Zhong, Jinming Liu, Shiyi Chen, Min Hu, Yan Zheng, Qi Chen and Tong Zhu,

{"title":"Long-Term Observations Reveal Enhanced Nighttime Formation of Nitrated PAHs Following Primary Emission Reduction","authors":"Xiaodi Shi, Xinghua Qiu*, Ailin Li, Peiwen Zhong, Jinming Liu, Shiyi Chen, Min Hu, Yan Zheng, Qi Chen and Tong Zhu, ","doi":"10.1021/acs.estlett.5c00530","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00530","url":null,"abstract":"Nitrated polycyclic aromatic hydrocarbons (NPAHs) are some of the most mutagenic and carcinogenic substances in ambient fine particulate matter (PM2.5). Due to their origin from both combustion processes and complex atmospheric nitrations of PAHs, it remains unknown how regulations, mainly on controlling primary emissions, impact NPAH levels and sources. Here, we analyzed long-term trends of 12 NPAHs in 415 PM2.5 samples collected in Beijing from 2014 to 2021 during Chinese clean air actions. ∑12NPAHs decreased by 89.2% (2350 pg m–3 to 254 pg m–3), a slower decline than that of ∑16PAHs determined using the same samples. The stable 2-nitropyrene/pyrene (2-NPYR/PYR) ratio suggests unchanged daytime gas-phase nitration, while the increasing 2-nitrofluoranthene (2-NFLT) contribution (26.1% to 46.2%) and rising 2-NFLT/FLT ratio indicate enhanced nighttime nitration. Based on estimations using the isomeric 2-NPYR/2-NFLT ratio, the nighttime reaction increased from 40.3% during the Air Pollution Prevention and Control Action Plan to 47.5% in 2021. Especially, nighttime reactions are negligible during cold seasons from 2014 to 2016 but contributed 10.3% in 2021. This evidence suggests that reducing primary emissions may intensify nighttime nitration, requiring targeted strategies to mitigate NPAHs. This study provides pivotal data for exposure assessment and informs air pollution control policies by addressing the secondary formation of key toxic pollutants.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 8","pages":"1003–1008"},"PeriodicalIF":8.8,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144813648","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

Microplastics Alter Predator Preferences of Prey through Associative Learning 微塑料通过联想学习改变捕食者的猎物偏好

IF 8.8 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-07-10 DOI: 10.1021/acs.estlett.5c00492

Amber Huizi Yang, Yeping Ma, Ruilin Huang and Song Lin Chua*,

{"title":"Microplastics Alter Predator Preferences of Prey through Associative Learning","authors":"Amber Huizi Yang, Yeping Ma, Ruilin Huang and Song Lin Chua*, ","doi":"10.1021/acs.estlett.5c00492","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00492","url":null,"abstract":"Microplastics (MPs) are pervasive environmental pollutants that pose significant threats to wildlife health and ecological interactions. While the toxicological impacts of MPs are increasingly recognized, their influence on animal behavior─particularly feeding preferences─remains underexplored. In this study, we investigated whether animals can discriminate between MP-contaminated (“dirty”) and uncontaminated (“clean”) food sources and whether such preferences can be shaped by experience. Using the model nematode Caenorhabditis elegans, we found that individuals preferentially consumed clean bacterial prey over MP-contaminated prey via olfactory cues mediated by the odr-10 gene. Strikingly, prolonged multigenerational exposure to MP-contaminated prey led to a reversal of this preference: the progeny of exposed worms developed a learned attraction to dirty food, a phenomenon absent in associative learning-deficient mutants (lrn-1). Soil microcosm experiments confirmed that MP contamination influenced predator foraging behavior with nematodes migrating toward cleaner prey patches. Our findings reveal that microplastic pollution can reprogram predator feeding preferences through associative learning and transgenerational inheritance, with broad implications for trophic dynamics and the ecological impact of plastic contamination.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 8","pages":"1032–1037"},"PeriodicalIF":8.8,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144813647","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