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

Emergence of More Potent PPD-Qs beyond 6PPD-Q in Human Blood and Cerebrospinal Fluid 人类血液和脑脊液中出现超过6PPD-Q的更强效ppd - q

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-04-08 DOI: 10.1021/acs.estlett.5c0024310.1021/acs.estlett.5c00243

Mingming Han, Kaihui Xia, Yuan Xue, Fange Yue, Juan Li, Fang Kang, Bingqing Zhu, Ligang Hu, Qifan Liu, Zhouqing Xie* and Guibin Jiang*,

{"title":"Emergence of More Potent PPD-Qs beyond 6PPD-Q in Human Blood and Cerebrospinal Fluid","authors":"Mingming Han, Kaihui Xia, Yuan Xue, Fange Yue, Juan Li, Fang Kang, Bingqing Zhu, Ligang Hu, Qifan Liu, Zhouqing Xie* and Guibin Jiang*, ","doi":"10.1021/acs.estlett.5c0024310.1021/acs.estlett.5c00243","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00243https://doi.org/10.1021/acs.estlett.5c00243","url":null,"abstract":"N-(1,3-Dimethylbutyl)-N′-phenyl-p-phenylenediamine-quinone (6PPD-Q) has been detected in human body fluids, with uncertainty about the occurrence of other p-phenylenediamine quinones (PPD-Qs) and their potential toxicities. In this study, following detection of PPD-Qs in human blood and cerebrospinal fluid (CSF), we investigated their toxicities to the blood–brain barrier (BBB). After ethical approval and signed informed consent, 27 participants were enrolled, and 20 blood and 20 CSF samples were collected. High-performance liquid chromatography coupled with triple quadrupole mass spectrometry (HPLC-3Q-MS) was used to detect the PPD-Qs in the samples. Cell biology and molecular biology technologies were applied to investigate the toxicological effects and the mechanisms of PPD-Qs on the BBB model by using human cerebral microvascular endothelial cell line (hCMEC-D3). PPD-Qs were frequently detected in both extracts of serum and CSF samples, with 6PPD-Q, N-isopropyl-N′-phenyl-1,4-phenylenediamine-quinone (IPPD-Q), and N,N′-bis(1,4-dimethylpentyl)-p-phenylenediamine-quinone (77PD-Q) being the most abundant. 77PD-Q and IPPD-Q exhibited greater toxicity compared with 6PPD-Q. 6PPD-Q, IPPD-Q, and 77PD-Q led to endothelial-to-mesenchymal transition (EndMT) of cerebral microvascular endothelial cells by upregulating PAI-1, resulting in BBB dysfunction. However, atorvastatin reversed this process and reduced their toxicities.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 5","pages":"496–502 496–502"},"PeriodicalIF":8.9,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143934296","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

Ignoring Environment and Health Threats Does Not Make Sense 忽视环境和健康威胁是没有道理的

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-04-08 DOI: 10.1021/acs.estlett.5c0027310.1021/acs.estlett.5c00273

Bryan W. Brooks*,

引用次数: 0

In Situ Observation of pH and Phosphorus Distribution at Apatite–Solution Interface 磷灰石-溶液界面pH和磷分布的原位观察

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-04-07 DOI: 10.1021/acs.estlett.5c0017510.1021/acs.estlett.5c00175

Xi-Yuan Li, Dong-Xing Guan*, Pei Chang, Ming-Hao Tang, Xiangyu Zhu, Jianchao Zhang, Yue-Bo Wang and Hui Henry Teng,

{"title":"In Situ Observation of pH and Phosphorus Distribution at Apatite–Solution Interface","authors":"Xi-Yuan Li, Dong-Xing Guan*, Pei Chang, Ming-Hao Tang, Xiangyu Zhu, Jianchao Zhang, Yue-Bo Wang and Hui Henry Teng, ","doi":"10.1021/acs.estlett.5c0017510.1021/acs.estlett.5c00175","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00175https://doi.org/10.1021/acs.estlett.5c00175","url":null,"abstract":"Phosphorus (P) availability in soils is a critical environmental challenge affecting agricultural productivity and ecosystem health. Apatite minerals serve as a key P reservoir, yet their dissolution mechanisms at the microscale remain poorly understood due to technical limitations in directly observing mineral–solution interfaces. Here, we demonstrate an innovative dual-imaging approach that combines fluorescence-based pH monitoring with diffusive gradients in thin-films (DGT) to visualize apatite dissolution dynamics at a submillimeter resolution. Using the pH-sensitive fluorescent probe HPTS, we revealed distinct spatial patterns of pH increase at the apatite–solution interface after 2.5 h exposure in acidic solution (pH 6.0), with the highest pH observed within a 70 μm interfacial layer. Concurrent DGT measurements showed P release peaked at 0.15 ng cm–2 s–1 at the interface, with radial diffusion patterns indicating reaction hotspots. This methodology provides unprecedented insights into the coupled dynamics of proton consumption and P release during mineral weathering. Our findings suggest that manipulating interfacial pH could enhance P mobilization from mineral sources, offering new strategies for optimizing nutrient availability in agricultural systems and understanding P cycling in natural environments.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 5","pages":"544–549 544–549"},"PeriodicalIF":8.9,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143934421","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

Tracing Hydrophobic Pollutants in the Deep Sea: A Case Study on Sowerby’s Beaked Whales 深海中疏水污染物的追踪：以索尔比喙鲸为例

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-04-06 DOI: 10.1021/acs.estlett.5c0011510.1021/acs.estlett.5c00115

Bo Yuan*, Cynthia A. de Wit, Aleksija Neimanis and Anna Maria Roos,

{"title":"Tracing Hydrophobic Pollutants in the Deep Sea: A Case Study on Sowerby’s Beaked Whales","authors":"Bo Yuan*, Cynthia A. de Wit, Aleksija Neimanis and Anna Maria Roos, ","doi":"10.1021/acs.estlett.5c0011510.1021/acs.estlett.5c00115","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00115https://doi.org/10.1021/acs.estlett.5c00115","url":null,"abstract":"Near-total darkness and water depths below 200 m define the deep sea, Earth’s largest yet most poorly studied ecosystem. Sowerby’s beaked whales (Mesoplodon bidens), elusive deep-sea foragers, offer a unique opportunity to assess the impacts of anthropogenic pollutants in this remote environment. This study examined a range of legacy and emerging hydrophobic pollutants, including organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), hexabromocyclododecane (HBCD), and polychlorinated alkanes (PCAs), across tissues from five stranded whales foraging in Swedish waters. Despite global efforts to reduce pollution, significant pollutant levels in these whales underscore the persistence of legacy contaminants and the widespread use of PCAs. Most pollutants were concentrated in lipid-rich blubber, while PCAs exhibited particularly high levels in whole blood (941–13100 ng/g lipid), indicating tissue-specific accumulation. Blubber pollutant levels were similar to those of harbor porpoises from the same waters, with p,p′-DDE (1020–2280 ng/g lipid) and PCBs (1230–1930 ng/g lipid) exceeding or nearing effect thresholds. Blood concentrations of legacy pollutants were approximately an order of magnitude higher than those in humans from the region, while PCA levels were comparable to those of humans. These findings highlight the urgent need to investigate deep-sea exposure pathways and develop effective management strategies.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 5","pages":"632–639 632–639"},"PeriodicalIF":8.9,"publicationDate":"2025-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.estlett.5c00115","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143934413","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

Reassessing Seasonal Variations of Gaseous Oxidized Mercury in Urban Beijing 北京市区气态氧化汞季节变化的再评价

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-04-05 DOI: 10.1021/acs.estlett.5c0008010.1021/acs.estlett.5c00080

Yan Wang, Zhenya Duan, Yi Tang, Shuxiao Wang, Zhijian Li, Yuying Cui, Feihu Peng, Haodong Zhang, Yanjun Jia, Pei Fang and Qingru Wu*,

{"title":"Reassessing Seasonal Variations of Gaseous Oxidized Mercury in Urban Beijing","authors":"Yan Wang, Zhenya Duan, Yi Tang, Shuxiao Wang, Zhijian Li, Yuying Cui, Feihu Peng, Haodong Zhang, Yanjun Jia, Pei Fang and Qingru Wu*, ","doi":"10.1021/acs.estlett.5c0008010.1021/acs.estlett.5c00080","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00080https://doi.org/10.1021/acs.estlett.5c00080","url":null,"abstract":"Understanding mercury behaviors in the atmosphere is essential for recognizing global mercury cycling. However, gaseous oxidized mercury (GOM) characteristics remain debated due to limitations in the commonly used KCl-coated denuder method. Here, we reassess GOM characteristics by simultaneously employing both the denuder method and a more reliable dual-channel method with a cation exchange membrane in an integrated system (CSAMS). Based on year-long observations in urban Beijing, we found significantly distinct seasonal patterns of GOM concentrations when using different methods: the denuder method showed GOM peaks in spring and troughs in summer, while the dual-channel method recorded the highest in summer and the lowest in winter. These results indicated significant seasonal variability in method consistency (the ratio of denuder GOM to dual-channel GOM), with values ranging from 7.3% in summer to 18.7% in spring (p-value < 0.05). Using a generalized additive model, we quantified the impacts of different environmental variables on method consistency. GOM, particulate-bound mercury, relative humidity, ozone, and nitric acid were identified as the main factors. Our study suggests temporal and potential spatial biases in GOM measurement introduced by the denuder method. We recommend reassessing the existing understanding of GOM characteristics and atmospheric mercury chemistry in future studies.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 5","pages":"593–598 593–598"},"PeriodicalIF":8.9,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143934410","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

Unraveling Hidden Infrared Spectral Signatures in PFAS Thermal Degradation with Two-Dimensional Correlation Spectroscopy 二维相关光谱揭示PFAS热降解过程中隐藏的红外光谱特征

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-04-04 DOI: 10.1021/acs.estlett.5c0019210.1021/acs.estlett.5c00192

Nicholas Stavinski, Runze Sun, Alireza Arhami Dolatabad, Mohamed Ateia*, Feng Xiao* and Luis Velarde*,

{"title":"Unraveling Hidden Infrared Spectral Signatures in PFAS Thermal Degradation with Two-Dimensional Correlation Spectroscopy","authors":"Nicholas Stavinski, Runze Sun, Alireza Arhami Dolatabad, Mohamed Ateia*, Feng Xiao* and Luis Velarde*, ","doi":"10.1021/acs.estlett.5c0019210.1021/acs.estlett.5c00192","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00192https://doi.org/10.1021/acs.estlett.5c00192","url":null,"abstract":"Per- and polyfluoroalkyl substances (PFAS) are difficult to degrade into more innocuous chemical species, which makes investigating their molecular characteristics at increased temperatures crucial for effective thermal PFAS remediation strategies. This Letter reports on the first development and implementation of infrared (IR) two-dimensional correlation spectroscopy (2D-COS) to elucidate hidden vibrational modes of gas-phase perfluorooctanoic acid (PFOA, C8F15O2H) and the potassium salt of perfluorooctanesulfonic acid (K-PFOS, C8F17SO3HK) undergoing thermal degradation (22–700 °C) in both N2 and air environments. Carbon–fluorine moieties unnoticed in conventional one-dimensional (1D) IR spectra were revealed via 2D-COS. Their spectral features were cross-correlated with other observed PFAS vibrations to distinguish peaks originating from the initial parent molecule and those of the degradation byproducts. Rotational–vibrational (rovibrational) spectra were observed for K-PFOS in air, a result that may be leveraged to extract fundamental structural properties of gas-phase PFAS. Overall, we observed distinct carbon–fluorine vibrational modes in PFOA and K-PFOS, providing unique mechanistic insights, such as bond scission at different carbon locants. The methodology and findings reported herein are critical to illustrating how different molecular configurations affect degradation pathways, offering a deeper understanding of PFAS behavior under thermal conditions.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 5","pages":"668–676 668–676"},"PeriodicalIF":8.9,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143934409","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

First Evidence of Environmental Formation of Sulfonated PCBs 磺化多氯联苯环境形成的第一个证据

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-04-03 DOI: 10.1021/acs.estlett.5c0013910.1021/acs.estlett.5c00139

Jessica Palladini, Elisa Terzaghi, Elisabetta Zanardini, Giovanni Palmisano, Renzo Bagnati, Alice Passoni and Antonio Di Guardo*,

{"title":"First Evidence of Environmental Formation of Sulfonated PCBs","authors":"Jessica Palladini, Elisa Terzaghi, Elisabetta Zanardini, Giovanni Palmisano, Renzo Bagnati, Alice Passoni and Antonio Di Guardo*, ","doi":"10.1021/acs.estlett.5c0013910.1021/acs.estlett.5c00139","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00139https://doi.org/10.1021/acs.estlett.5c00139","url":null,"abstract":"Several types of metabolites can be produced from the environmental degradation of PCBs such as OH-PCBs, sulfated PCBs, methoxylated PCBs, and others. However, while sulfonated and OH-sulfonated PCBs were recently found in soil, little information is available on their formation and their environmental path. In this study, the environmental formation of OH-sulfonated and sulfonated PCBs was shown for the first time in treatments using eight PCB congeners as a carbon source in a flask experiment. Here, 10 environmental inocula from different sources were tested to evaluate, in a semiquantitative way, the formation of OH-sulfonated and sulfonated PCBs. OH-PCBs were also monitored, as they represent one of the first degradation steps of PCBs. All inocula could generate these metabolites, although the number of congeners varied greatly. In general, OH-PCBs and OH-sulfonated PCBs were produced at the highest concentrations. For sulfonated PCBs, the highest number of congeners was produced from an inoculum derived from plant leaves and from a PCB-contaminated site. The results show that OH-sulfonated and sulfonated PCBs can be environmentally formed by microbial inocula, even by the generalist ones, not specifically selected in PCB rich environments.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 5","pages":"640–647 640–647"},"PeriodicalIF":8.9,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.estlett.5c00139","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143934334","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

•OH Dominates the Dark Oxidation of Elemental Mercury at the Liquid–Ice Interface during Environmentally Relevant Freeze–Thaw Cycles •在与环境相关的冻融循环中，OH主导了液冰界面元素汞的暗氧化

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-04-03 DOI: 10.1021/acs.estlett.5c0029610.1021/acs.estlett.5c00296

Yingying Fang, Qingyuan Song, Qingqing Yang, Yu Xia, Bolei Chen*, Zhang Lin*, Yong Liang, Yongguang Yin*, Yong Cai and Guibin Jiang,

{"title":"•OH Dominates the Dark Oxidation of Elemental Mercury at the Liquid–Ice Interface during Environmentally Relevant Freeze–Thaw Cycles","authors":"Yingying Fang, Qingyuan Song, Qingqing Yang, Yu Xia, Bolei Chen*, Zhang Lin*, Yong Liang, Yongguang Yin*, Yong Cai and Guibin Jiang, ","doi":"10.1021/acs.estlett.5c0029610.1021/acs.estlett.5c00296","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00296https://doi.org/10.1021/acs.estlett.5c00296","url":null,"abstract":"Oxidation of elemental mercury (Hg(0)) is critical in Hg long-range transport and deposition. Freeze–thaw cycles commonly occur in the atmosphere, surface water, and soil in cold regions; however, their effects on Hg(0) oxidation, particularly during environmentally relevant freeze–thaw processes, remain unknown. Here, we investigated the freeze-induced dark oxidation of Hg(0) by potential reactive oxygen species under controlled freeze–thaw conditions. Freeze–thaw cycles (25 to −20 to 25 °C and 10 to −10 to 10 °C) accelerated the oxidation of Hg(0) compared with constant 25/10 °C, especially in acidic solutions (pH 4.0). Subsequent characterization and radical quenching experiments confirmed that the spontaneously produced hydroxyl radical (•OH) was the predominant oxidant responsible for Hg(0) oxidation. Notably, hydrogen peroxide (H2O2) loading at environmental levels did not accelerate Hg(0) oxidation, suggesting that the observed oxidation is distinct from the mechanism of the freeze-concentration effect (Hg(0) and H2O2 enrichment increase the oxidation rate) as previously documented. This work demonstrated a novel pathway for Hg(0) oxidation driven by the spontaneous production of •OH at the liquid–ice interface, independent of H2O2. This research highlights that the interfacial •OH production can affect the environmental behavior of Hg(0) with important implications for understanding its fate, particularly in the atmosphere.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 5","pages":"613–618 613–618"},"PeriodicalIF":8.9,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143934335","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

High Spatiotemporal Resolution Inventory Finely Depicts the Rebound Characteristics of Greenhouse Gas Emissions from Vehicles in Beijing after the COVID-19 Epidemic 高时空分辨率调查精细刻画新冠肺炎疫情后北京市机动车温室气体排放反弹特征

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-03-28 DOI: 10.1021/acs.estlett.5c0006510.1021/acs.estlett.5c00065

Yangmingkai Li, Qianru Zhang, Maodian Liu*, Mengqi Yang, Xingrui Cai, Jingsong Ye, Wenzhe Guo, Hehao Qin, Qirui Zhong, Bin Wang, Guofeng Shen, Junfeng Liu, Shu Tao and Xuejun Wang*,

{"title":"High Spatiotemporal Resolution Inventory Finely Depicts the Rebound Characteristics of Greenhouse Gas Emissions from Vehicles in Beijing after the COVID-19 Epidemic","authors":"Yangmingkai Li, Qianru Zhang, Maodian Liu*, Mengqi Yang, Xingrui Cai, Jingsong Ye, Wenzhe Guo, Hehao Qin, Qirui Zhong, Bin Wang, Guofeng Shen, Junfeng Liu, Shu Tao and Xuejun Wang*, ","doi":"10.1021/acs.estlett.5c0006510.1021/acs.estlett.5c00065","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00065https://doi.org/10.1021/acs.estlett.5c00065","url":null,"abstract":"Urban transportation systems are one of the major contributors to greenhouse gas (GHG) emissions. China’s COVID-19 lockdown greatly suppressed these emissions, yet the spatiotemporal patterns of emissions may have shifted as restrictions eased. Here, we developed hourly link-level inventories of GHG (CO2, CH4, and N2O) emissions from on-road vehicles in Beijing for 2022 and 2023, leveraging extensive observational traffic data and machine learning models. Our analysis revealed that vehicle activity in Beijing greatly increased in 2023 following the relaxation of pandemic control measures, particularly on expressways and during weekends. This resulted in 21%, 22%, and 24% increases in CO2, CH4, and N2O emissions, respectively, compared to 2022. The rebound was concentrated in two short periods of the strict 2022 lockdowns, accounting for over two-thirds of the total increase in 2023, underscoring the impact of human activity. Furthermore, we found that vehicle fleet updates in 2023 helped slightly mitigate the rebound in CO2, CH4, and N2O emissions, reducing their total emissions by 8.4%, 6.8%, and 5.1%, respectively. This study precisely quantifies the postpandemic rebound effects, identifies the underlying causes, and provides a framework that can be applied to analyze the emission reduction effects of various local policies.","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 4","pages":"405–412 405–412"},"PeriodicalIF":8.9,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143790724","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

High Production of Nitrous Oxide (N2O) via Acidic Denitrification 通过酸性反硝化高产一氧化二氮（N2O）

IF 8.9 2区环境科学与生态学

Environmental Science & Technology Letters Environ. Pub Date : 2025-03-27 DOI: 10.1021/acs.estlett.5c0025510.1021/acs.estlett.5c00255

Zhiqiang Zuo, Tianyi Zhang, Xiaotong Cen, Xi Lu, Tao Liu and Min Zheng*,

引用次数: 0