IF 12.2 1区环境科学与生态学

环境科学与技术 Pub Date : 2026-11-10 Epub Date: 2026-10-23 DOI: 10.1021/acs.est.6c07585

Damian E. Helbling, Detlef R. U. Knappe, Joseph J. Pignatello, J. Conrad Pritchard, Wenqing Xu

{"title":"From Bench-Scale Experiments to Technical Scale-Up: Rethinking Sorption Research for the Removal of Trace Organic Contaminants from Water","authors":"Damian E. Helbling, Detlef R. U. Knappe, Joseph J. Pignatello, J. Conrad Pritchard, Wenqing Xu","doi":"10.1021/acs.est.6c07585","DOIUrl":"10.1021/acs.est.6c07585","url":null,"abstract":"Drinking water, wastewater,and stormwater systems are increasinglychallenged by trace organic contaminants (TrOCs), including PFAS,pharmaceuticals, pesticides, and other persistent and highly mobilecontaminants that occur at ultralow concentrations in complex watermatrices. Sorption-based treatment processes remain central to TrOCremoval because they can concentrate dilute contaminants without generatingpotentially toxic transformation products. However, much of the currentsorption literature remains disconnected from the needs of performanceprediction and technical scale-up. Equilibrium and kinetic parametersare often derived under simplified laboratory conditions, using empiricallyfitted models, elevated contaminant concentrations, and/or nonrepresentativewater matrices, limiting their physical interpretability and transferabilityacross treatment scenarios. This review critically examines threeinterconnected areas governing the engineering relevance of sorptiondata: thermodynamic principles governing sorption equilibria, mechanisticinterpretation of sorption kinetics, and the evaluation and transitionof novel sorbents to scaled treatment systems. By identifying limitationsin prevailing experimental practices and aligning equilibrium characterization,kinetic modeling, and sorbent evaluation with application-relevantconditions, this review provides a framework for generating mechanisticallygrounded sorption data to support material selection and translatelaboratory-derived sorption data into process design parameters forpilot- and full-scale TrOC treatment systems.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"60 44","pages":"31178–31194"},"PeriodicalIF":12.2,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149241639","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

Winter and Summer Differences in Oxylipin Responses to Ambient Particles: Roles of Sizes and Constituents 冬夏两季氧脂素对环境颗粒的响应差异：大小和成分的作用

IF 12.2 1区环境科学与生态学

环境科学与技术 Pub Date : 2026-11-10 Epub Date: 2026-10-23 DOI: 10.1021/acs.est.6c08647

Teng Wang, Yiqun Han, Zhiqin Wang, Wu Chen, Yanwen Wang, Yunfei Fan, Yifan Xu, Yidan Zhang, Haonan Li, Yuanyang Liu, Hanbin Zhang, Li Yan, Lia Chatzidiakou, Jicheng Gong, Benjamin Barratt, Roderic L. Jones, Jing Liu, Yangfeng Wu, Frank J. Kelly, Tong Zhu

{"title":"Winter and Summer Differences in Oxylipin Responses to Ambient Particles: Roles of Sizes and Constituents","authors":"Teng Wang, Yiqun Han, Zhiqin Wang, Wu Chen, Yanwen Wang, Yunfei Fan, Yifan Xu, Yidan Zhang, Haonan Li, Yuanyang Liu, Hanbin Zhang, Li Yan, Lia Chatzidiakou, Jicheng Gong, Benjamin Barratt, Roderic L. Jones, Jing Liu, Yangfeng Wu, Frank J. Kelly, Tong Zhu","doi":"10.1021/acs.est.6c08647","DOIUrl":"10.1021/acs.est.6c08647","url":null,"abstract":"Ambient fine particulate matter (PM2.5) hasbeen associatedwith increased mortality risk, but whether it is more harmful on colderor warmer days is unclear. Here, we investigate seasonal variationsin PM2.5 mass, sizes, constituents, and their associationwith oxylipin changes in humans. In a panel study of 123 adults inBeijing, we measured 27 PM2.5 metrics and five circulatinglipoxygenase-derived oxylipins (i.e., leukotriene B4 [LTB4], 5-, 8-,12-, and 15-hydroxyeicosatetraenoic acid [HETE]) across winter andsummer. PM2.5 exposure was associated with peak oxylipinincreases at lag 0–1 days. Across particle size fractions andconstituents, oxylipin increases ranged from 3.3% to 114.2%, withthe most robust associations for ultrafine particles, accumulationmode particles, organic carbon, and chloride. Furthermore, an exposure-responserelationship between UFP and oxylipins was observed only in summer.An IQR increase in UFP was associated with oxylipin changes of 12.9–97.7%in summer and −7.7 to 18.8% in winter. Conversely, oxylipinincreases associated with accumulation mode particles and organiccarbon were greater in winter. These findings suggest that the sizesand constituents of PM2.5 may partially explain the seasonaldifference in the health effect of PM2.5 exposure, helpingidentify components associated with stronger biomarker responses inspecific seasons.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"60 44","pages":"31344–31355"},"PeriodicalIF":12.2,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149241694","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

Plant Oxidative Stress Mediates the Synergistic Transformation of Benzotriazole Ultraviolet Stabilizers in Rhizosphere Soil: Insights from Dual Exposure Pathways 植物氧化胁迫介导苯并三唑紫外线稳定剂在根际土壤中的协同转化：来自双重暴露途径的见解

IF 12.2 1区环境科学与生态学

环境科学与技术 Pub Date : 2026-11-10 Epub Date: 2026-10-24 DOI: 10.1021/acs.est.6c08784

Zhenpeng Xu, Jingqiu Jiang, Hongxia Zhao, Yiwen Ou, Jiyan Liu, Xintong Li, Jinyang Wang

{"title":"Plant Oxidative Stress Mediates the Synergistic Transformation of Benzotriazole Ultraviolet Stabilizers in Rhizosphere Soil: Insights from Dual Exposure Pathways","authors":"Zhenpeng Xu, Jingqiu Jiang, Hongxia Zhao, Yiwen Ou, Jiyan Liu, Xintong Li, Jinyang Wang","doi":"10.1021/acs.est.6c08784","DOIUrl":"10.1021/acs.est.6c08784","url":null,"abstract":"Benzotriazoleultraviolet stabilizers (BUVs) are widespread emergingcontaminants in soil. However, their transformation in the rhizosphereand the regulatory effects of plant oxidative stress on rhizosphereremediation remain unclear. The objective of this study was to investigatethese effects using molecular simulations and rhizosphere and foliarexposure experiments. The removal efficiency of the four BUVs was15–46% higher in the rhizosphere of Helianthus annuus than under natural soil degradation. The plantrhizosphere promoted BUV desorption from soil and induced hydroxylationas a specific transformation pathway. Direct rhizosphere exposuretriggered oxidative stress and accelerated reactive oxygen species(ROS) accumulation in soil. Rhizosphere ROS contributed approximately31.2%–42.7% to BUV transformation. Foliar exposure experimentssuggested that plant oxidative stress is an important contributorto rhizosphere ROS generation. Under BUV stress, plant oxidative stressregulated the composition of dissolved organic matter (DOM) and theselective enrichment of bacteria, including Acidobacteriota, Actinomycota,and Bacteroidota. Multivariate correlation network analysis suggestedthat foliar exposure resulted in more complex interactions among rhizospheremicroenvironmental characteristics than did direct rhizosphere exposure.This study provides insights into BUV transformation in the rhizosphereand establishes a framework for plant signal-guided rhizosphere remediationstrategies.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"60 44","pages":"32044–32057"},"PeriodicalIF":12.2,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149241698","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

Recombinase Polymerase Amplification Coupled with Graphene Oxide Nanomaterial-Assisted Purification and Target Signal Selection for Highly Sensitive and Rapid Harmful Algae Detection 重组酶聚合酶扩增耦合氧化石墨烯纳米材料辅助纯化和目标信号选择用于高灵敏度和快速有害藻类检测

IF 12.2 1区环境科学与生态学

环境科学与技术 Pub Date : 2026-11-10 Epub Date: 2026-10-27 DOI: 10.1021/acs.est.6c07778

Yunrui Han, Guangpeng Fan, Xuzhong Cheng, Jinyao An, Ningkai Yang, Yifan Zhou, Xiaoshuang Chen, Yujuan Zhao, Mingyuan Sun, Yunhong Zhang, Shuai Wang, Lin Han

{"title":"Recombinase Polymerase Amplification Coupled with Graphene Oxide Nanomaterial-Assisted Purification and Target Signal Selection for Highly Sensitive and Rapid Harmful Algae Detection","authors":"Yunrui Han, Guangpeng Fan, Xuzhong Cheng, Jinyao An, Ningkai Yang, Yifan Zhou, Xiaoshuang Chen, Yujuan Zhao, Mingyuan Sun, Yunhong Zhang, Shuai Wang, Lin Han","doi":"10.1021/acs.est.6c07778","DOIUrl":"10.1021/acs.est.6c07778","url":null,"abstract":"Harmful algal blooms (HABs) pose serious ecological andhealthrisks, creating an urgent need for rapid, sensitive, and accuratedetection of harmful algae. Here, we developed a graphene oxide (GO)-and Mg2+-regulated recombinase polymerase amplificationassay (G-M-RPA) for rapid and ultrasensitive detection of Heterosigma akashiwo, Prorocentrum minimum, and Akashiwo sanguinea. Using conserved internal transcribed spacer sequences, we designedspecies-specific primers labeled with 6-carboxyfluorescein for fluorescencereadout. Innovative one-step purification of RPA products was achievedusing self-synthesized GO-wrapped magnetic nanocomposites insteadof traditional purification kits, reducing purification time from15 to 2 min (∼86.7%). The fluorescence resonance energy transferproperty of the GO nanosheets was applied to quench the fluorescenceof excess single-stranded primers, significantly lowering backgroundlevels. Mg2+ further enhanced primer–GO interactions,likely through electrostatic screening and Mg2+-mediatedinteractions. The entire detection process was completed within ∼30min, achieving a genomic DNA detection limit of 3.3 fg/μL, correspondingto ∼7 cells/mL for H. akashiwo. The assay also showed reliable performance in mixed-DNA and seawatermatrices, with favorable reproducibility and short-term stability.Overall, the proposed G-M-RPA strategy provides a rapid, sensitive,and practical platform for multispecies harmful-algae detection, nearshoreenvironmental monitoring, and early warning of HABs.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"60 44","pages":"32008–32020"},"PeriodicalIF":12.2,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149250891","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

Pesky Metals: Historical Perspective, Advances, and Challenges for Remediation of Problematic Metal Contaminants 有害金属：问题金属污染物修复的历史视角、进展与挑战

IF 12.2 1区环境科学与生态学

环境科学与技术 Pub Date : 2026-11-10 Epub Date: 2026-10-28 DOI: 10.1021/acs.est.6c08900

Peggy A. O’Day, Marc Beutel, Dimitri Vlassopoulos

引用次数: 0

Modeling Decadal Organosulfates in Particulate Matter to Improve Estimations of Aerosol Hygroscopicity in the United States 模拟颗粒物质中的年代际有机硫酸盐以改进美国气溶胶吸湿性的估计

IF 12.2 1区环境科学与生态学

环境科学与技术 Pub Date : 2026-11-10 Epub Date: 2026-11-02 DOI: 10.1021/acs.est.6c08752

Alan R. Gonzalez, Heewon Yim, Kyle P. McCary, Xiangxinyue Meng, Ajith Thenoor Chandran, Yue Zhang, Yuzhou Wang

{"title":"Modeling Decadal Organosulfates in Particulate Matter to Improve Estimations of Aerosol Hygroscopicity in the United States","authors":"Alan R. Gonzalez, Heewon Yim, Kyle P. McCary, Xiangxinyue Meng, Ajith Thenoor Chandran, Yue Zhang, Yuzhou Wang","doi":"10.1021/acs.est.6c08752","DOIUrl":"10.1021/acs.est.6c08752","url":null,"abstract":"Organosulfates (OSs) can comprise a substantial fractionof secondaryorganic aerosol and exhibit significantly different hygroscopicitythan inorganic sulfates, yet their spatiotemporal prevalence and climaticimpacts remain poorly constrained because speciated measurements aresparse and common chemical transport models do not explicitly representOS formation. This study develops a flexible and robust modeling frameworkto quantify isoprene-derived OS (iOS) concentrations and OS impactson aerosol hygroscopicity (κ) across the contiguous United States(U.S.) for summers spanning 2013–2022. Using the CommunityMultiscale Air Quality (CMAQ) model with updated iOS chemistry, simulationsreproduce Interagency Monitoring of Protected Visual Environments(IMPROVE) network-derived organosulfur and inorganic sulfate and agreewith speciated iOS measurements from filter analyses. OS concentrationsare elevated in the eastern U.S., with summertime mean values up to0.51 μg m–3. OS formation produces a net 5.6%decrease in κ (direct OS contribution, +2.8%; indirect, −8.4%via sulfate reduction). We apply an interpretable machine-learningsurrogate to identify predictive features associated with OS variabilityand enable efficient estimation without rerunning CMAQ. These resultsprovide the first observation-validated, high-spatial-coverage OSreconstruction and nationwide quantification of OS-driven κchanges, underscoring the importance of representing OS formationand expanded observations to improve aerosol-cloud radiative effectassessments.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"60 44","pages":"31786–31797"},"PeriodicalIF":12.2,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149304864","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

Technological Substitution in Pesticide Application Reduces Occupational Risk but Fails to Mitigate Dietary Residue Burden: Field Evidence from UAV versus Manual Spraying in Paddy Rice 农药应用的技术替代降低了职业风险，但未能减轻膳食残留负担：来自无人机与人工喷洒水稻的现场证据

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2026-11-10 DOI: 10.1021/acs.est.6c13192

Yixiang Wang,Xulun Zhang,Rui Wang,Zhe Li,Junjie Shao,Yuejin Zhang,Yuanyuan Lu,Quan Zhang

{"title":"Technological Substitution in Pesticide Application Reduces Occupational Risk but Fails to Mitigate Dietary Residue Burden: Field Evidence from UAV versus Manual Spraying in Paddy Rice","authors":"Yixiang Wang,Xulun Zhang,Rui Wang,Zhe Li,Junjie Shao,Yuejin Zhang,Yuanyuan Lu,Quan Zhang","doi":"10.1021/acs.est.6c13192","DOIUrl":"https://doi.org/10.1021/acs.est.6c13192","url":null,"abstract":"UAV spraying has been widely promoted as superior to manual application in Asian rice production, yet its combined implications for food safety and occupational exposure have never been evaluated within a single integrated framework. Here, we report a full-season field trial comparing UAV and manual imidacloprid (IMI) application in paddy rice, simultaneously tracking grain residue dynamics and occupational exposure in 29 applicators through to harvest. Grain IMI concentrations at harvest were comparable between regimes (86−115 μg/kg) and exceeded the EU maximum residue limit (MRL, 10 μg/kg) in both groups. More critically, on an LC-HRMS-derived relative-concentration basis, parent IMI accounted for 30.4% of the detected IMI-related profile in grain, whereas transformation products collectively accounted for 69.6%. Among these, 6-hydroxynicotinic acid was the single highest-abundance compound, surpassing parent IMI itself, yet none of the detected transformation products are included in China’s residue definition for imidacloprid in plant-derived foods. Regarding occupational exposure, urinary IMI rose approximately 9-fold from pre-exposure baseline in UAV operators compared with 17-fold in manual applicators. Manual application also induced markedly greater lipid peroxidation stress, with median baseline-normalized MDA fold changes of approximately 3.8- and 2.6-fold in the manual and UAV groups, respectively (p = 0.001). These findings establish that application technology substitution effectively reduces occupational exposure risk but confers no advantage at the food safety end point. Current parent-compound-centered residue surveillance frameworks systematically underestimate the true IMI-related burden in harvested grain, and expansion of regulatory monitoring beyond the parent compound is warranted.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"10 2 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149374758","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

Abnormal Event Monitoring of Drainage Pipelines Based on Distributed Optical Fiber Vibration Sensing 基于分布式光纤振动传感的排水管道异常事件监测

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2026-11-10 DOI: 10.1021/acs.est.6c06501

Boyuan Xue,Haoyuan Cao,Zhi Wang,Ruihong Chen,Songliu Lu,Xiaohong Zhou

{"title":"Abnormal Event Monitoring of Drainage Pipelines Based on Distributed Optical Fiber Vibration Sensing","authors":"Boyuan Xue,Haoyuan Cao,Zhi Wang,Ruihong Chen,Songliu Lu,Xiaohong Zhou","doi":"10.1021/acs.est.6c06501","DOIUrl":"https://doi.org/10.1021/acs.est.6c06501","url":null,"abstract":"Urban drainage networks are critical infrastructure for modern cities, yet their complex and concealed nature makes real-time monitoring of abnormal events a persistent challenge. To address this, this work proposed a distributed optical fiber vibration sensing system based on phase-sensitive optical time-domain reflectometry (Φ-OTDR) for drainage pipeline monitoring. To accurately capture abnormal events from complex environmental noise, a two-tier intelligent processing architecture comprising localization and classification modules was developed. The localization module employed an enhanced You Only Look Once (YOLO) model integrating anchor-box optimization, a channel-attention module, and an additional small-target feature layer, achieving a mean average precision of 96.8% in laboratory tests. The classification module utilized a hybrid model combining convolutional neural network, bidirectional long short-term memory, and attention classifier, achieving an overall accuracy of 98.1% for five abnormal events. During two-week of continuous field monitoring, the system localized simulated events with errors below 2.60 m and distinguished internal leakage, knocking, and drilling from walking, running, and vehicle interference with precision and recall exceeding 99.6% for the tested classes. Notably, the system successfully detected and accurately localized an actual branch pipe leakage event, demonstrating its practical effectiveness under real-world operating conditions.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"10 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149374759","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

UV-Induced Degradation of Microcystin-LR Mediated by a Ratiometric Fluorescence Probe for the Visual Detection of Microcystin-LR 比例荧光探针介导紫外光降解微囊藻毒素lr的研究

IF 12.2 1区环境科学与生态学

环境科学与技术 Pub Date : 2026-11-10 Epub Date: 2026-07-07 DOI: 10.1021/acs.est.6c07756

Zhaomin Wang, Chen Wang, Huiyan Chuan, Bingyan Li, Yue Zhang, Ping Xie, Zhe Chen, Yong Liu

{"title":"UV-Induced Degradation of Microcystin-LR Mediated by a Ratiometric Fluorescence Probe for the Visual Detection of Microcystin-LR","authors":"Zhaomin Wang, Chen Wang, Huiyan Chuan, Bingyan Li, Yue Zhang, Ping Xie, Zhe Chen, Yong Liu","doi":"10.1021/acs.est.6c07756","DOIUrl":"10.1021/acs.est.6c07756","url":null,"abstract":"Microcystin-LR (MC-LR), a natural toxin produced by cyanobacteria,poses a significant threat to human health and ecological systems.Rapid and accurate quantification of MC-LR plays a critical role inthe early warning systems and environmental risk assessment of eutrophicwater bodies. Herein, we identified a unique UV-induced degradationmechanism of MC-LR mediated by a newly developed ratiometric fluorescenceprobe ASS12. Under UV irradiation, the probe undergoesa specific reaction with MC-LR, during which its fluorescence colorchanges sequentially from yellow to red and ultimately to blue within20 min. This dynamic response enables visual detection of MC-LR bythe naked eye and significantly enhances the ratiometric fluorescencesignal for MC-LR at the I465/I555 ratio by 77-fold. For the first time, we found thatthe long alkyl chain and aldehyde group of the probe serve as keymolecular recognition sites during MC-LR detection. Furthermore, theratiometric fluorescence signal of the probe exhibits a strong correlationwith the concentration of MC-LR across different regions of plateaulakes, effectively reflecting the spatial distribution patterns ofMC-LR within these aquatic environments. Using a multivariate linearparametrization model linking the fluorescence ratio and water qualityparameters, the distribution of MC-LR in lakes can be determined.This study provides a valuable theoretical foundation and technicalapproach for the development of novel MC-LR monitoring tools and thevisual assessment of water eutrophication.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"60 44","pages":"31319–31331"},"PeriodicalIF":12.2,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148400809","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

Unveiling Phase-Dependent Fe–O Bond-Guided Nitrate Reduction at Biocathodes: Balancing Interfacial Reactivity and Iron Bioavailability 揭示相依赖的Fe-O键引导硝酸盐还原在生物阴极：平衡界面反应性和铁的生物利用度

IF 12.2 1区环境科学与生态学

环境科学与技术 Pub Date : 2026-11-10 Epub Date: 2026-10-26 DOI: 10.1021/acs.est.6c08748

Yunxin Xing, Ziang Kong, Han Wang, Shuaishuai Man, Bin Huang, Qun Yan

{"title":"Unveiling Phase-Dependent Fe–O Bond-Guided Nitrate Reduction at Biocathodes: Balancing Interfacial Reactivity and Iron Bioavailability","authors":"Yunxin Xing, Ziang Kong, Han Wang, Shuaishuai Man, Bin Huang, Qun Yan","doi":"10.1021/acs.est.6c08748","DOIUrl":"10.1021/acs.est.6c08748","url":null,"abstract":"Iron oxides are widespread in anoxic water environments,yet howtheir structures regulate microbial nitrate reduction remains unclear.Here, we reveal that phase-dependent Fe–O bond characteristicsguide denitrification in bioelectrochemical system (BES) by balancinglattice-iron bioavailability and interfacial electrochemical reactivityat biocathodes. Density functional theory (DFT) calculations revealedthat surface Fe–O bond covalency was associated with the thermodynamicbarrier to lattice-iron release. α-Fe2O3, with the most negative ICOHP, exhibited the strongest Fe–Obonding and restricted iron release, thereby limiting microbial ironacquisition and downstream Fe–S cluster assembly. In contrast,γ-Fe2O3 and γ-FeOOH exhibited highersurface electroactivity but suffered from structural instability,evidenced by phase transformation, cell encrustation, and elevatedmicrobial mortality. With mixed valence and balanced Fe–O bondingcharacteristics, Fe3O4 achieved the highestdenitrification efficiency (17.8-fold enhancement over its abioticcontrol), which enabled direct Fe(II) uptake via the FeoAB system,bypassing siderophore-dependent acquisition and simultaneously activatingboth TonB-mediated iron acquisition and Fur-flavin-regulated respiratorypathways. This dual-pathway activation supported enhancement in biomassgrowth, intracellular electron transfer, and Fe–S cluster-dependentenzymatic activity. These findings help establish Fe–O bondcharacteristics as a key structural factor for Fe–N couplingand offer a structural perspective for rational design of iron-oxide-basednitrate-removal technologies.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"60 44","pages":"31598–31610"},"PeriodicalIF":12.2,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149248698","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

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