IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-05-29 DOI: 10.1021/acs.est.5c00953

Yang Yang, Fukun Bi, Jiafeng Wei, Xiao Han, Bin Gao, Rong Qiao, Jingcheng Xu, Ning Liu, Xiaodong Zhang

{"title":"Boosting the Photothermal Oxidation of Multicomponent VOCs in Humid Conditions: Synergistic Mechanism of Mn and K in Different Oxygen Activation Pathways","authors":"Yang Yang, Fukun Bi, Jiafeng Wei, Xiao Han, Bin Gao, Rong Qiao, Jingcheng Xu, Ning Liu, Xiaodong Zhang","doi":"10.1021/acs.est.5c00953","DOIUrl":"https://doi.org/10.1021/acs.est.5c00953","url":null,"abstract":"The complexity of actual industrial emissions has brought significant challenges for volatile organic compounds (VOCs) purification. Herein, Mn and K atoms were incorporated into Co3O4/TiO2 through theoretical study, and its excellent properties were verified in experiments. The different pathways of oxygen activation by Mn and K were revealed by characterization experiments and theoretical calculations. Mn species effectually reduced the dissociation energy barrier of H2O adsorbed on the surface, and the surface hydroxyl group promoted the dissociation of O2 and the formation of •O2– under light and humid conditions. The introduction of K promoted the formation of more oxygen vacancies, which served as adsorption sites for gaseous O2. Meanwhile, the electron transfer accelerated by K contributed to the activation of H2O and the rapid production of •OH under light. The synergistic effect of Mn and K successfully achieved simultaneous improvements in the activity, stability, and water resistance of Co3O4/TiO2. Furthermore, the catalyst was applied to the degradation of multicomponent VOCs, and the reaction path was analyzed through the test of intermediates, along with an investigation of the interaction among different types of VOCs. This study provided a new idea for the theoretical optimization of polymetallic catalysts and the analysis of degradation paths for multicomponent VOCs.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"40 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144165429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Natural Iron Fertilization Moderates Hydrothermal Mercury Inputs from Arc Volcanoes 天然铁肥调节弧火山热液汞输入

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-05-29 DOI: 10.1021/acs.est.5c01767

Natalia Torres-Rodriguez, Jingjing Yuan, Aurélie Dufour, Igor Živković, David Point, Cédric Boulart, Joël Knoery, Milena Horvat, David Amouroux, Sophie Bonnet, Cécile Guieu, Ruoyu Sun, Lars-Eric Heimbürger-Boavida

{"title":"Natural Iron Fertilization Moderates Hydrothermal Mercury Inputs from Arc Volcanoes","authors":"Natalia Torres-Rodriguez, Jingjing Yuan, Aurélie Dufour, Igor Živković, David Point, Cédric Boulart, Joël Knoery, Milena Horvat, David Amouroux, Sophie Bonnet, Cécile Guieu, Ruoyu Sun, Lars-Eric Heimbürger-Boavida","doi":"10.1021/acs.est.5c01767","DOIUrl":"https://doi.org/10.1021/acs.est.5c01767","url":null,"abstract":"Methylmercury is a bioaccumulative neurotoxin that poses severe risks to marine ecosystems and human health worldwide. Hydrothermal systems and submarine volcanoes are natural sources of mercury, yet the magnitude of emissions, their transport, and their impact on marine ecosystems remain poorly understood. Quantifying natural mercury fluxes is essential to understanding anthropogenic perturbations and guiding effective reduction strategies. We investigate hydrothermal mercury inputs at the Tonga volcanic arc and their impact on the local ecosystem. Our results show that hydrothermal and volcanic activity in the Tonga Arc increases mercury concentrations in seawater. Comprehensive surveys identified mercury-rich plumes (up to 22.7 pmol L–1) associated with high mercury fluxes (4763 pmol m–2 day–1) reaching productive surface waters, resulting in an estimated total flux of 4.23 t y–1 for the entire Tonga Arc. Despite these significant inputs, mercury concentrations in phytoplankton remain unexpectedly low. We demonstrate that phytoplankton blooms, stimulated by natural iron fertilization from hydrothermal sources, dilute mercury at the cellular level, reducing the impact of hydrothermal mercury. Additionally, we provide a revised global estimate of hydrothermal mercury inputs with a maximum of 120 t y–1, which is considerably lower than atmospheric and riverine inputs to the ocean.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"16 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144165430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Direct Quantification of Ion Partitioning and Diffusion Resistances in Reverse Osmosis Membranes via Electrochemical Impedance Spectroscopy 利用电化学阻抗谱法直接定量测定反渗透膜中的离子分配和扩散阻力

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-05-28 DOI: 10.1021/acs.est.5c01683

Xueye Wang, Wanting Kong, Xiaohu Zhai, Zhiwei Wang, Razi Epsztein, Xuesong Li

{"title":"Direct Quantification of Ion Partitioning and Diffusion Resistances in Reverse Osmosis Membranes via Electrochemical Impedance Spectroscopy","authors":"Xueye Wang, Wanting Kong, Xiaohu Zhai, Zhiwei Wang, Razi Epsztein, Xuesong Li","doi":"10.1021/acs.est.5c01683","DOIUrl":"https://doi.org/10.1021/acs.est.5c01683","url":null,"abstract":"Polyamide (PA) reverse osmosis (RO) membranes are crucial for water desalination and purification, where salt ion transport is governed by partitioning and diffusion through the PA film. Despite extensive research, decoupling these two steps and quantifying their relative contributions remain challenging due to the lack of reliable characterization methods. Here, we develop a rapid, reproducible electrochemical impedance spectroscopy (EIS) protocol incorporating advanced electrical equivalent circuits to directly quantify partitioning and diffusion resistance. Its validity is verified through membrane filtration experiments and activation energy analysis. Our findings reveal that diffusion dominates ion transport resistance, with values 4.5 to 6.0 times higher than partitioning resistance across diverse monovalent cations. However, we discovered a critical concentration-dependent behavior where partitioning resistance becomes increasingly significant at lower electrolyte concentrations, eventually equaling diffusion resistance near 0.1 mM. We also uncovered that the anomalously low rejection of NH4+ of RO membranes stemmed from significantly reduced diffusion resistance, likely due to moderate hydrogen-bonding interactions with membrane pores or its tetrahedral geometry. This quantitative insight into transport resistance mechanisms establishes new design principles for next-generation RO membranes, enabling tailored strategies for applications ranging from high-salinity desalination to the removal of low-concentration micropollutants.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"82 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Screening and Evaluation of Male Reproductive Effects of Isothiazolinones at Human-Relevant Levels in Mammals: Direct Impairments and Increased Susceptibility to Subsequent Spermatogenic Stress 哺乳动物中与人类相关水平的异噻唑啉酮对雄性生殖影响的筛选和评估：直接损伤和对随后的生精压力的易感性增加

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-05-28 DOI: 10.1021/acs.est.5c00652

Yi-Ming Xiong, Xuan-Yue Chen, Han-Zhang Wang, Xing-Hong Li, Yuan-Yuan Li, Zhan-Fen Qin

{"title":"Screening and Evaluation of Male Reproductive Effects of Isothiazolinones at Human-Relevant Levels in Mammals: Direct Impairments and Increased Susceptibility to Subsequent Spermatogenic Stress","authors":"Yi-Ming Xiong, Xuan-Yue Chen, Han-Zhang Wang, Xing-Hong Li, Yuan-Yuan Li, Zhan-Fen Qin","doi":"10.1021/acs.est.5c00652","DOIUrl":"https://doi.org/10.1021/acs.est.5c00652","url":null,"abstract":"Although isothiazolinones (ITs) are widely used as antimicrobials in various products, the understanding of their hazards remains incomplete. This study aimed to evaluate the adverse effects of ITs at human-relevant levels on the male mammal reproductive system. First, we employed testicular cells to determine all test ITs exerting relatively high toxicity, with 2-octyl-4-isothiazolin-3-one (OIT) exhibiting toxicity higher than that of other ITs. Then, the OIT was administered to mice through drinking water at nominal doses of 50 and 5000 μg/kg/day from gestational day 10. Consequently, we found that the two doses of the OIT caused retarded testis development in suckling pups, accompanied by male reproductive impairments in adulthood, including decreased sperm count and increased malformations. When receiving subsequent spermatogenic stress induced by an injection of busulfan, OIT-exposed mice exhibited more pronounced testicular abnormalities and sperm defects, indicating increased susceptibility to stress. In addition, our in vitro results of germ cell line and mouse sperm, combined with sperm defects in animals, suggest the possibility that OIT-caused testicular impairments are partly due to its binding to thiol-containing molecules. Altogether, our study for the first time shows that exposure to OIT at human-relevant levels not only impairs the male reproductive system but also induces it to be more susceptible to subsequent spermatogenic stress, which highlights reproductive health risks of OIT.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"54 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144165512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fungi as a Critical Component of Lake Microbiota in Response to Cyanobacterial Harmful Algal Blooms 真菌是响应蓝藻有害藻华的湖泊微生物群的关键组成部分

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-05-28 DOI: 10.1021/acs.est.4c09164

Ze Zhao, Han Gao, Yuyi Yang, Ye Deng, Feng Ju

{"title":"Fungi as a Critical Component of Lake Microbiota in Response to Cyanobacterial Harmful Algal Blooms","authors":"Ze Zhao, Han Gao, Yuyi Yang, Ye Deng, Feng Ju","doi":"10.1021/acs.est.4c09164","DOIUrl":"https://doi.org/10.1021/acs.est.4c09164","url":null,"abstract":"Cyanobacterial Harmful Algal Blooms (CyanoHABs) pose a growing threat to lake ecosystems. While microbial communities constitute the resilient power of lake ecosystems to CyanoHAB disturbances, the role of fungi remains underexplored. Here, the dynamics of size-fractionated fungal and associated bacterial communities were tracked across the peak and decline stages of a CyanoHAB event in shallow subtropical Lake Taihu. The results revealed that the composition of fungal and bacterial communities in separated size fractions varied between bloom stages, with enrichment patterns likely influenced by their reliance on algal-derived nutrients. Null model-based analysis revealed a shift in fungal community assembly, from dominance by dispersal limitation (44%) and drift (30%) at the peak stage to increased homogeneous selection (44%) at the early decline stage, whereas bacterial communities remained predominantly shaped by stochastic processes, highlighting their distinct responses to cyanobacterial biomass decomposition. Comparative topological analysis of microbial co-occurrence networks showed strengthened cross-kingdom fungi-bacteria interactions as the bloom declined, especially within decomposing cyanobacterial colonies, facilitating nutrient cycling and accelerating cyanobacterial biomass removal. These findings led to a conceptual model proposing fungi as critical members of the freshwater microbiome in eutrophic lakes, driving biogeochemical cycling and potentially contributing to the resilience of the lake ecosystem against CyanoHABs.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"58 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hydrolytic Dehalogenation of Toxic Haloacetic Acids via Carbon Metabolism Regulation during Microbial Denitrification 微生物反硝化过程中碳代谢调节对有毒卤乙酸水解脱卤的影响

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-05-28 DOI: 10.1021/acs.est.5c04881

Yuting Wang, Jing Zhao, Jiyong Bian, Rui Li, Siqi Xu, Ruiping Liu, Yu-You Li, Huijuan Liu, Jiuhui Qu

{"title":"Hydrolytic Dehalogenation of Toxic Haloacetic Acids via Carbon Metabolism Regulation during Microbial Denitrification","authors":"Yuting Wang, Jing Zhao, Jiyong Bian, Rui Li, Siqi Xu, Ruiping Liu, Yu-You Li, Huijuan Liu, Jiuhui Qu","doi":"10.1021/acs.est.5c04881","DOIUrl":"https://doi.org/10.1021/acs.est.5c04881","url":null,"abstract":"Microbial denitrification is essential in the nitrogen cycle to enhance the quality of the reclaimed water. In addition to nitrogen removal, it has the potential to control trace pollutants. However, the fates of toxic disinfection byproducts (DBPs) on denitrification remain unelucidated. The current study focused on Paracoccus denitrificans (P. denitrificans) to investigate the response mechanisms of denitrifying microorganisms to HAAs, one of the main categories of DBPs. Upon exposure to 20 μM monoiodoacetic acid (MIAA), the number of extracellular reactive oxygen species in P. denitrificans increased to 2.7 times at 16 h. Concurrently, the specific nitrate reduction rate dropped by 9.3% and the specific growth rate declined by 26.7%, leading to the slowdown of the denitrification process. Nevertheless, P. denitrificans increased the activity of the tricarboxylic acid cycle and electron transport for sustainable denitrification under MIAA stress. Microbial hydrolytic dehalogenation contributed to over 70.0% MIAA removal, and it led to the release of iodine ions. MIAA was detoxified and concerted into low-molecular-weight organic acids, which then participated in carbon metabolism. The removal efficiency of different toxic HAAs was also compared to evaluate the adaptiveness of the DBP control. This research highlighted the interactions between denitrifying microorganisms and DBPs, providing new insights into the ecological safety protection of high-quality reclaimed water.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"3 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Control of Effluent Organic Matter, Cytotoxicity, and Disinfection Byproducts in Wastewater with Biological Anion Exchange Resins: Enhanced Performance through Skeleton Design 生物阴离子交换树脂控制废水中有机物、细胞毒性和消毒副产物：通过骨架设计增强性能

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-05-28 DOI: 10.1021/acs.est.4c13232

Xingqi Zhu, Lu Jiang, Ye-chao Tian, Yang Pan, Wen-tao Li, Chendong Shuang, Rong Ji, Aimin Li

{"title":"Control of Effluent Organic Matter, Cytotoxicity, and Disinfection Byproducts in Wastewater with Biological Anion Exchange Resins: Enhanced Performance through Skeleton Design","authors":"Xingqi Zhu, Lu Jiang, Ye-chao Tian, Yang Pan, Wen-tao Li, Chendong Shuang, Rong Ji, Aimin Li","doi":"10.1021/acs.est.4c13232","DOIUrl":"https://doi.org/10.1021/acs.est.4c13232","url":null,"abstract":"Effluent organic matter (EfOM) in wastewater threatens ecosystems and drinking water safety via the urban water cycle. Biofiltration using adsorbents with dual adsorption–biodegradation functions, such as biological anion exchange resins (BAERs), offers a promising solution. Compared to biological activated carbon (BAC), BAERs’ adjustable skeletons enable targeted EfOM removal. This study designed two BAERs with polystyrene (PS-AER) and magnetic polyacrylic (MPA-AER) skeletons and compared them with conventional polyacrylic BAER (PA-AER) and BACs. During 12 000-bed-volume field applications, BAERs demonstrated 1.7–2.6 and 1.6–2.6 times higher dissolved organic carbon (DOC) and UV254 removal rates than BACs. This efficacy stemmed from the high concentration of negatively charged components, which BAERs effectively attract. Furthermore, skeleton modifications improved DOC removal by 15.3–17.2% and UV254 removal by 7.3–18.2% for PS-AER and MPA-AER, compared to PA-AER. The MPA-AER’s open pore structure enhanced diffusion of high molecular weight components, while PS-AER’s enhanced hydrophobicity improved aromatic component removal. These structural changes also influenced the biological effects of BAERs. Notably, the enhanced performance of PS-AER and MPA-AER reduced wastewater cytotoxicity and controlled the production of disinfection byproducts. Overall, this study confirms the potential of BAERs in wastewater treatment and highlights strategies for performance enhancement through skeleton modification.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"1 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144165432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Key Contribution and Risk of Airborne Antibiotic Resistance: Total Suspended Particles or Settled Dust? 空气中抗生素耐药性的关键贡献和风险：总悬浮颗粒还是沉降尘埃？

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-05-28 DOI: 10.1021/acs.est.4c11038

Zi-Yin Chen, Fang-Zhou Gao, Hong Bai, Min Zhang, Liang-Ying He, You-Sheng Liu, Guang-Guo Ying

{"title":"Key Contribution and Risk of Airborne Antibiotic Resistance: Total Suspended Particles or Settled Dust?","authors":"Zi-Yin Chen, Fang-Zhou Gao, Hong Bai, Min Zhang, Liang-Ying He, You-Sheng Liu, Guang-Guo Ying","doi":"10.1021/acs.est.4c11038","DOIUrl":"https://doi.org/10.1021/acs.est.4c11038","url":null,"abstract":"The atmosphere is an important environmental medium in spreading antimicrobial resistance (AMR) in animal farming systems, yet the exposure risks associated with airborne pathways remain underexplored. This study employed metagenomic sequencing to investigate the airborne transmission of AMR in chicken farms (i.e., chicken feces, total suspended particles (TSP), and dust) and its exposure risks on the gut and nasal cavities of workers, office staff, and nearby villagers. Results revealed that TSP exhibited greater abundance, diversity, and transfer potential of antibiotic resistance genes (ARGs) compared to dust. The abundance of airborne resistome decreased with distance from the chicken house, and ARGs were estimated to spread up to 9.48 km within 1 h. While the gut resistome of workers and villagers showed limited differences, emerging tet(X) variants and high-risk dfrA remain future concerns. More nasal resistome was attributable to TSP compared to dust. Workers faced significantly higher inhalable exposures to antibiotic-resistant bacteria (ARB) and human pathogenic antibiotic-resistant bacteria (HPARB), exceeding those of office staff and villagers by an order of magnitude. We also compiled lists of high-risk and potential-risk airborne ARGs to inform monitoring. These findings highlight the need for regular air disinfection in animal farms and better protective measures for workers.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"34 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Machine Learning Reveals Key Adsorption Mechanisms for Oxyanions Based on Combination of Experimental and Published Literature Data 结合实验和发表的文献数据，机器学习揭示了氧离子的关键吸附机制

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-05-28 DOI: 10.1021/acs.est.5c03992

Ling Yuan, Han Zhang, Hang Yu, Rongming Xu, Weiming Zhang, Yanyang Zhang, Ming Hua, Lu Lv, Bingcai Pan

{"title":"Machine Learning Reveals Key Adsorption Mechanisms for Oxyanions Based on Combination of Experimental and Published Literature Data","authors":"Ling Yuan, Han Zhang, Hang Yu, Rongming Xu, Weiming Zhang, Yanyang Zhang, Ming Hua, Lu Lv, Bingcai Pan","doi":"10.1021/acs.est.5c03992","DOIUrl":"https://doi.org/10.1021/acs.est.5c03992","url":null,"abstract":"The development of new adsorbents for water treatment often involves complex adsorption mechanisms, whose individual contributions are unclear, thereby limiting the understanding of adsorption driving forces, making it difficult to achieve precise design of adsorbents. Machine learning (ML) has been used to uncover the impacts of these mechanisms through feature engineering, but progress is limited by the data quality for training. Herein, we developed a universal ML strategy for precisely predicting the adsorption capacity of polymers for oxyanions and identifying the adsorption driving force based on the combination of experimental and published literature data. The adsorption mechanism was explored through classification of RDkit descriptors with different SHAP importance values, and electrostatic interaction was found to be the driving force in the oxyanion adsorption process, which was further verified by theoretical calculations, adsorption experiments, and effective targeted adsorbent design. In comparison, analysis relying on a separate literature data source led to decreased model performance, some biased conclusions, and invalid targeted adsorbent design. Overall, this study proposed a strategy for data set optimization as well as dominant mechanism identification, which could shed light on better treatment of oxyanions in wastewater.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"10 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Long-Term Changes in Summertime Nitrate Chemistry in the Top Boundary Layer of North China 华北夏季上层边界层硝酸盐化学的长期变化

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-05-28 DOI: 10.1021/acs.est.5c03079

Liang Wen, Jian Gao, Likun Xue, Yang Li, Rui Gao, Wei Tang, Jiaqi Wang, Xiaohui Du, Yujie Zhang, Xinfeng Wang, Yujiao Zhu, Fahe Chai, Jingnan Hu, Guigang Tang, Jianmin Chen, Tao Wang, Aijun Ding, Hartmut Herrmann, Abdelwahid Mellouki, Can Dong, Haisheng Li, Zhaoxin Guo, Yong Zhao

{"title":"Long-Term Changes in Summertime Nitrate Chemistry in the Top Boundary Layer of North China","authors":"Liang Wen, Jian Gao, Likun Xue, Yang Li, Rui Gao, Wei Tang, Jiaqi Wang, Xiaohui Du, Yujie Zhang, Xinfeng Wang, Yujiao Zhu, Fahe Chai, Jingnan Hu, Guigang Tang, Jianmin Chen, Tao Wang, Aijun Ding, Hartmut Herrmann, Abdelwahid Mellouki, Can Dong, Haisheng Li, Zhaoxin Guo, Yong Zhao","doi":"10.1021/acs.est.5c03079","DOIUrl":"https://doi.org/10.1021/acs.est.5c03079","url":null,"abstract":"Reducing fine particulate nitrate (pNO3–) is critical for further mitigating PM2.5 pollution in China. However, previous NOx emission reductions have failed to achieve the expected pNO3– decreases. The present study reports that pNO3– concentration in summer increased by 55.8% and 5.6% at North China Peak (1534 m a.s.l.) from 2007 to 2014 and 2014 to 2021, respectively. pNO3– formation enhancement was caused mainly by decreased aerosol acidity due to notable SO42– reduction. pNO3– formation changed from a process limited by NH4+ to one colimited by NO2 and NH4+, suggesting an increased effect of NOx reduction on decreasing pNO3– production. Vertical transport represents a significant source of pNO3– near the surface, illustrating a percentage as high as 98% recorded during daytime hours and a proportion of 34% in the dark over North China in the simulation scenario during summer 2020. The scheme to reduce NOx emissions by 10% from 2020 to 2025 is predicted to slowly decrease aloft pNO3– over North China, which may facilitate further reductions in pNO3– concentrations near the surface via vertical transport. The inflection of nitrate chemistry in the top boundary layer suggests an opportunity to accelerate PM2.5 reduction under projected further emission reductions.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"10 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

环境科学与技术最新文献