Xinyu Chen, Yeonsoo Park, Zijian Wang, Gloria J. Zhou, Xinyue Mu, Eva Durance, Zhen Jia, Lynna Deng, George F. Wells, Fuzhong Zhang, April Z. Gu, Ludmilla Aristilde
{"title":"Robust multi-resolution analysis of polyhydroxyalkanoate biopolymers synthesized in a wastewater bacterium","authors":"Xinyu Chen, Yeonsoo Park, Zijian Wang, Gloria J. Zhou, Xinyue Mu, Eva Durance, Zhen Jia, Lynna Deng, George F. Wells, Fuzhong Zhang, April Z. Gu, Ludmilla Aristilde","doi":"10.1007/s10311-026-01904-4","DOIUrl":"https://doi.org/10.1007/s10311-026-01904-4","url":null,"abstract":"","PeriodicalId":541,"journal":{"name":"Environmental Chemistry Letters","volume":"12 1","pages":""},"PeriodicalIF":15.7,"publicationDate":"2026-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147617539","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}
Jake E. Barker, Stephen D. P. Fielden, Richard H. Kempton, Calum T. J. Ferguson, Rachel K. O’Reilly, Grant B. Douglas
{"title":"A perfluoro-functionalised fluorescent maleimide probe for imaging of per- and polyfluoroalkyl substances","authors":"Jake E. Barker, Stephen D. P. Fielden, Richard H. Kempton, Calum T. J. Ferguson, Rachel K. O’Reilly, Grant B. Douglas","doi":"10.1007/s10311-026-01898-z","DOIUrl":"10.1007/s10311-026-01898-z","url":null,"abstract":"<div><p>The persistence of per- and polyfluoroalkyl substances in the environment is becoming a major health concern, yet studying their fate and behaviour in complex media is limited due to the lack of suitable analytical methods. Here we proposed that a fluorescent polyfluoroalkyl probe could enable rapid tracing and negate drawbacks associated with current techniques. We synthesised a fluorescent probe containing a maleimide motif grafted to perfluorooctanoic acid. Using a conductivity assay, the critical micelle concentration was determined, and cryogenic transmission electron microscopy was further utilised to verify the presence of multilamellar vesicles. Titration of the fluorescent probe with a base enabled the determination of the acid dissociation constant, an important property of perfluorooctanoic acid. Results show that this fluorescent probe exhibits similar properties to perfluorooctanoic acid, and thus could reasonably act as an environmental proxy, with the benefit of strong, concentration-dependent and environmentally responsive fluorescence. This fluorescence offers a facile entry point for real-time tracing in various media. Further exploration of this tracer through plant, concrete, or soil studies could enable a better understanding of per- and polyfluoroalkyl substance behaviour in range of natural and artificial media.</p></div>","PeriodicalId":541,"journal":{"name":"Environmental Chemistry Letters","volume":"24 3","pages":"407 - 414"},"PeriodicalIF":20.4,"publicationDate":"2026-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10311-026-01898-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146172","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}
Yanting Wang, Siyuan Jing, Ke Wang, Yinjuan Chen, Kashif Hayat, Thomas C. Wanger, Weiping Liu
{"title":"A polymer dissolution-based protocol for monitoring microplastics by pyrolysis gas chromatography-mass spectrometry","authors":"Yanting Wang, Siyuan Jing, Ke Wang, Yinjuan Chen, Kashif Hayat, Thomas C. Wanger, Weiping Liu","doi":"10.1007/s10311-025-01892-x","DOIUrl":"10.1007/s10311-025-01892-x","url":null,"abstract":"<div><p>The ubiquitous occurrence of microplastics in ecosystems and living organisms is an emerging issue of health concern, yet robust risk assessment is limited by the absence of standardized analytical methods. We developed a pyrolysis-gas chromatography-mass spectrometry protocol for the monitoring of polyethylene, polypropylene, polystyrene, polyvinyl chloride, polymethyl methacrylate, and polycarbonate in environmental samples. For calibration, we employed polymer-specific solvent systems, including dichloromethane for polymethyl methacrylate and polycarbonate, tetrahydrofuran for polystyrene and polyvinyl chloride, and toluene for polyethylene and polypropylene. Results on spiked soil matrices showed 78.7–90.1% analytical recovery and polymer quantification limits ranging from 0.014 µg to 0.29 µg.</p></div>","PeriodicalId":541,"journal":{"name":"Environmental Chemistry Letters","volume":"24 2","pages":"281 - 286"},"PeriodicalIF":20.4,"publicationDate":"2026-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146070168","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}
Jose Luis Ayastuy, Dmitry Yu. Murzin, Daniel Gallego-García, Mark E. Martínez-Klimov, Päivi Mäki-Arvela, Johan Wärnå, Unai Iriarte-Velasco, Miguel Angel Gutiérrez-Ortiz
{"title":"Aviation-fuel-grade aromatic–cycloalkane blends via isoeugenol hydrodeoxygenation using nickel aluminate spinel catalyst","authors":"Jose Luis Ayastuy, Dmitry Yu. Murzin, Daniel Gallego-García, Mark E. Martínez-Klimov, Päivi Mäki-Arvela, Johan Wärnå, Unai Iriarte-Velasco, Miguel Angel Gutiérrez-Ortiz","doi":"10.1007/s10311-026-01896-1","DOIUrl":"10.1007/s10311-026-01896-1","url":null,"abstract":"<div><p>Aviation is a major contributor to greenhouse gas emissions, and thus developing renewable alternatives such as lignin-derived biofuels is critical. Current catalytic routes for hydrodeoxygenation of bio-oil model compounds, such as isoeugenol, fail to produce the desired aromatics to cycloalkane ratios required for aviation fuels. We hypothesized that tailoring metal-support interactions in a nickel aluminate spinel catalyst can enable selective formation of hydrocarbon blends meeting fuel specifications. Hydrodeoxygenation of isoeugenol was conducted in a batch reactor using a nickel aluminate spinel catalyst synthesized via a one-pot sol-gel method. Reactions were conducted at 250–300 °C and 20–40 bar hydrogen pressure, and products were analyzed by gas chromatography-mass spectrometry to determine yields of aromatics, cycloalkanes, and intermediates. Catalyst structure and surface properties were characterized using X-ray diffraction, X-ray photoelectron spectroscopy, X-ray absorption spectroscopy, and electron microscopy to establish structure–performance relationships. Under optimized conditions of 275 °C at 20 bar H<sub>2</sub>, aromatic and cycloalkane yields reached 16 wt% and 30 wt%, respectively. Reaction trends showed that elevated temperatures favor cycloalkane formation while hydrogen pressure controls intermediate conversion. The moderate Lewis acidity combined with medium-sized Ni<sup>0</sup> crystallites promote selective hydrogenation and deoxygenation while minimizing over-hydrogenation. This catalytic system produces fuel-grade hydrocarbon mixtures in a single step, exceeding previously reported performance. These findings provide a practical route for lignin valorization and the production of renewable aviation fuels with reduced greenhouse gas emissions.</p></div>","PeriodicalId":541,"journal":{"name":"Environmental Chemistry Letters","volume":"24 3","pages":"415 - 422"},"PeriodicalIF":20.4,"publicationDate":"2026-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10311-026-01896-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146056740","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}
Thomas Schaefer, Jonathan D. Raff, Mallikarjuna N. Nadagouda, Eric Lichtfouse, Dan Meyerstein, Hartmut Herrmann, Virender K. Sharma
{"title":"The carbon dioxide radical anion as a reductant in water treatment and atmospheric chemistry: a review","authors":"Thomas Schaefer, Jonathan D. Raff, Mallikarjuna N. Nadagouda, Eric Lichtfouse, Dan Meyerstein, Hartmut Herrmann, Virender K. Sharma","doi":"10.1007/s10311-025-01894-9","DOIUrl":"10.1007/s10311-025-01894-9","url":null,"abstract":"<div>\u0000 \u0000 <p>The carbon dioxide radical anion, CO<sub>2</sub><sup>●−</sup>, is a highly reactive radical species involved in the reduction of the CO<sub>2</sub> greenhouse gas, organic synthesis, atmospheric aerosol chemistry, and treatment of halogenated compounds. In recent years, CO<sub>2</sub><sup>●−</sup> has emerged as a strong reductant, or single electron donor. Here we present techniques used to generate CO<sub>2</sub><sup>●−</sup> and we discuss applications to degrading pollutants such as halogenated alkanes. The potential occurrence of such reductions in water and aqueous aerosols is discussed, notably for the degradation of perfluoroalkyl substances. In the laboratory, CO<sub>2</sub><sup>●−</sup> is directly generated by either direct electrochemical reduction of CO<sub>2</sub> or hydrogen atom transfer of either formate salts with and without catalysts or ferrioxalate through photochemical or radiolytic processes. The CO<sub>2</sub><sup>●−</sup> has an ultraviolet spectrum, and CO<sub>2</sub><sup>●−</sup> vibration modes are characterized by fast kinetics using infrared and Raman spectroscopy. The second-order rate constants of the reactions of CO<sub>2</sub><sup>●−</sup> with halogenated alkanes, of -1.84 ± 0.22 V, are generally slower than that of the hydrated electron, of -2.87 V, and give a negative linear relationship with energy of lower unoccupied molecular orbital, suggesting single electron transfer mechanism in reducing the halogenated compounds.</p>\u0000 </div>","PeriodicalId":541,"journal":{"name":"Environmental Chemistry Letters","volume":"24 3","pages":"423 - 437"},"PeriodicalIF":20.4,"publicationDate":"2026-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10311-025-01894-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146070167","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}
{"title":"Correction: Dioxins and furans in biochars, hydrochars and torreficates produced by thermochemical conversion of biomass: a review","authors":"Łukasz Sobol, Arkadiusz Dyjakon, Karel Soukup","doi":"10.1007/s10311-026-01895-2","DOIUrl":"10.1007/s10311-026-01895-2","url":null,"abstract":"","PeriodicalId":541,"journal":{"name":"Environmental Chemistry Letters","volume":"24 2","pages":"401 - 402"},"PeriodicalIF":20.4,"publicationDate":"2026-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10311-026-01895-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146048157","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}