Environmental Science & Technology Letters Environ.最新文献

{"title":"Call for Expanding Environmental Surveillance of H5N1: The Role of Microbial Source Tracking","authors":"Wenjing Ren,  and , Joan B. Rose*, ","doi":"10.1021/acs.estlett.5c00756","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00756","url":null,"abstract":"","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 9","pages":"1110–1112"},"PeriodicalIF":8.8,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145009589","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}

{"title":"Biocalcification Induces the Preferential Settling of Small Buoyant Microplastics in Freshwater","authors":"Yang Li,&nbsp;Dongyu Xu,&nbsp;Ke Sun*,&nbsp;Baoshan Xing and Bo Gao*,&nbsp;","doi":"10.1021/acs.estlett.5c00630","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00630","url":null,"abstract":"<p >The vertical transport of microplastics (MPs) in freshwater is poorly understood. In this study, the effects of biocalcification on the settling behavior of buoyant MPs in the presence of <i>Microcystis aeruginosa</i> and Ca²⁺ were investigated via incubation experiments. Here, we show that the formation of biogenic calcite on the surface of MPs resulted in an increase in density and, subsequently, the settling of MPs, with its effect varying significantly with the size and aging of MPs. Specifically, biogenic calcite preferentially facilitated the sinking of smaller MPs compared to larger ones, mainly due to their different adsorption affinities for extracellular polymeric substances (EPS), which provide nucleation sites for calcite. Notably, aging further enhanced this size-dependent settling of MPs, which was primarily attributable to differences in the selective binding of macromolecules in EPS. Compared to the pristine MPs, the aged ones tend to acquire more polar macromolecules from EPS, which resulted in greater complexation interactions between the MPs and Ca²⁺ and consequently increased biogenic calcite precipitation and enhanced settling of MPs. The findings of this study highlight the importance of biogenic calcite-mediated settling of MPs in freshwater environments.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 9","pages":"1225–1231"},"PeriodicalIF":8.8,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145009576","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}

{"title":"A Novel Combinatorial Approach of Volatile Organic Compound Tracers, Low-Cost Sensors, and Source-Receptor Modeling for Spatial Identification and Quantification of Natural and Anthropogenic Sources of Criteria Air Pollutants: Case Study from the Indo-Gangetic Plain","authors":"Raj Singh,&nbsp;Baerbel Sinha* and Vinayak Sinha*,&nbsp;","doi":"10.1021/acs.estlett.5c00473","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00473","url":null,"abstract":"<p >Attribution of air pollution is important to plan evidence-based mitigation. In this case study from Mohali, India, we show that a unique combination of volatile organic compound (VOC)-based source apportionment in combination with a dense network of monitoring grade air pollutant observations and a few low-cost sensors can collectively identify and locate the sources of criteria air pollutants impacting a receptor site. The study uses ambient chemical composition measurements from the COVID-19 pandemic-induced lockdown in 2020. The key drivers of pollutant reductions were the 74 ± 4% reduction in transport activity between prelockdown and postlockdown, accompanied by a 63 ± 5% drop in traffic VOC emission and a 96 (80–100)% drop in NO emissions. Reductions in industrial activity and power demand caused a 53 ± 3% drop in industrial VOC emissions and 67 ± 5% drop in SO₂ emissions, as well as a 59 ± 3% reduction in open waste burning during lockdown, which resulted in 43 ± 2% and 39 ± 1% reductions in PM_2.5 and PM₁₀ emissions, respectively. Our key finding that the strongest PM and SO₂ sources are located at the urban periphery and in the hinterland indicates that Indian clean air action plans need to shift their focus from urban noncompliance areas to a holistic air-shed approach.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 9","pages":"1177–1183"},"PeriodicalIF":8.8,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145009813","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}

{"title":"Toward Eco-Friendly CMP Process: Emerging Trends and Strategies for Reducing Environmental Footprint","authors":"Ravitej Venkataswamy,&nbsp;Murali Ramu and Jihoon Seo*,&nbsp;","doi":"10.1021/acs.estlett.5c00635","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00635","url":null,"abstract":"<p >As the industry shifts toward AI and smart mobility technologies, the escalating demand for advanced semiconductors has led to significant environmental concerns. With a typical semiconductor fabrication plant (fab) consuming over 10,000 m³ of ultrapure water (UPW) daily, the environmental footprint is substantial. Chemical mechanical planarization (CMP) is the primary driver of this impact, accounting for approximately 30–40% of the total wastewater volume and consuming one-third of the UPW used by the fab. This process relies heavily on consumables such as slurries, pads, conditioners, and cleaning solutions, resulting in substantial wastewater generation, energy, and resource consumption. CMP is extremely demanding of resources, consuming large amounts of ultrapure water, and it also generates substantial wastewater and greenhouse gas emissions. In this review, we explore both established strategies and emerging trends for mitigating the environmental impacts of CMP through sustainable practices. It discusses the development of biodegradable slurries, recyclable abrasives, specialized pads, and advanced water treatment technologies. Emphasizing the role of green chemistry principles, life cycle assessment frameworks, and process optimization, this study highlights efforts to minimize the environmental footprint of semiconductor manufacturing. Despite recent progress, gaps remain, particularly in the development of sustainable CMP pads, biodegradability of slurry components, and effective wastewater management. This review suggests future research directions aimed at developing comprehensive strategies to reduce wastewater production, improve resource recovery, and enhance the overall sustainability of CMP processes. These efforts contribute to aligning technological advances in the semiconductor industry with global environmental objectives.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 9","pages":"1139–1153"},"PeriodicalIF":8.8,"publicationDate":"2025-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acs.estlett.5c00635","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145009812","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":"CO2-Based Leaching of Sulfidic Peridotite Drives Critical Mineral Mobilization and Carbonate Precipitation","authors":"Madeline A. Murchland*,&nbsp;Quin R. S. Miller*,&nbsp;Alexandra B. Nagurney,&nbsp;C. Heath Stanfield,&nbsp;Nabajit Lahiri,&nbsp;Joshua A. Silverstein,&nbsp;Yuntian Teng,&nbsp;Emily T. Nienhuis,&nbsp;Mark H. Engelhard,&nbsp;Connor Mulcahy and H. Todd Schaef,&nbsp;","doi":"10.1021/acs.estlett.5c00603","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00603","url":null,"abstract":"<p >The transition toward green energy requires both carbon dioxide removal and consistent supplies of energy-critical minerals. Injection and mineralization of supercritical CO₂ at active mafic- and ultramafic-hosted mines provide a potential avenue to achieve both, through the stable geologic storage of carbon and subsequent mobilization of critical metals. A sample from the Eagle occurrence, an ultramafic-hosted sulfide deposit in Michigan, United States, that is the only active Ni mine in the United States, was characterized both before and after reaction with supercritical CO₂ at elevated pressure and temperature. We present the changes in mineralogy, feature relocation, and potential for carbon mineralization and critical mineral recovery based on the comparison of pre- and postreaction data sets. Herein, we present evidence of dissolution–precipitation reactions leading to carbon mineralization and critical and strategic mineral mobilization (Ni, Mn, and Cu) driven by water-saturated supercritical CO₂ fluids, including the formation of aragonite and dissolution–reprecipitation of Ni-bearing phases. Collectively, these results will improve fate and transport models for carbon storage in ultramafic rocks, increase understanding of new unconventional sources for critical minerals, and provide a foundation for future studies on CO₂ enhanced mineral recovery (CO₂-EMR).</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 9","pages":"1252–1263"},"PeriodicalIF":8.8,"publicationDate":"2025-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145009803","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}

{"title":"Revisiting Ferrate(VI) Activation: Why Enhanced Reactivity Undermines Disinfection","authors":"Zepei Tang,&nbsp; and ,&nbsp;Yang Deng*,&nbsp;","doi":"10.1021/acs.estlett.5c00716","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00716","url":null,"abstract":"<p >Activated ferrate(VI) can enhance the degradation of contaminants of emerging concern (CECs) due to the <i>in situ</i> formation of more reactive intermediates, primarily Fe(V)/Fe(IV) and possibly free radicals. However, disinfection under ferrate(VI) activation conditions remains underexplored. This study investigated the role of sulfite (SO₃^2–) in SO₃^2–-activated ferrate(VI) for bacterial inactivation. Laboratory-scale experiments were conducted to degrade sulfamethoxazole (SMX) and remove bacterial indicators using ferrate(VI) alone and with sulfite at varying [Fe(VI)]:[SO₃^2–]. Bacterial adsorption onto ferrate(VI)-derived iron oxide particles was experimentally ruled out, validating the dominance of chemical oxidation in bacterial removal. In lake water, activation was observed at [Fe(VI)]:[ SO₃^2–] = 1:2, achieving 60% SMX degradation, compared to 42% by ferrate(VI) alone ([SMX] = 0.8 μM, [Fe(VI)] = 25 μM). However, log removals of total coliform and <i>E. coli</i> declined from 2.86 and 3.28 (ferrate(VI) alone) to 1.17–2.76 and 2.11–3.11, respectively, within [Fe(VI)]:[SO₃^2–] = 4:1–1:4. Similar trends were also observed in the secondary wastewater effluent. Furthermore, log removals exhibited two-phase linear relationships with ferrate(VI) exposure, regardless of activation state, underscoring the importance of time-integrated ferrate(VI) concentration. This study demonstrates the limitations of CT values in assessing ferrate(VI) activation-based disinfection and highlights the need to re-evaluate implementation strategies for ferrate(VI) activation in water treatment.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 8","pages":"1095–1101"},"PeriodicalIF":8.8,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acs.estlett.5c00716","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144813704","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":"Uncovering Spatially Resolved 6PPDQ Metabolism in Rainbow Trout Fry with Nano-DESI Mass Spectrometry Imaging","authors":"Nicholas Woytowich,&nbsp;Catherine Roberts,&nbsp;Phillip Ankley,&nbsp;Markus Brinkmann,&nbsp;Erik T. Krogh and Kyle D. Duncan*,&nbsp;","doi":"10.1021/acs.estlett.5c00669","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00669","url":null,"abstract":"<p ><i>N</i>-(1,3-dimethylbutyl)-<i>N</i><i>′</i>-phenyl-<i>p</i>-phenylenediamine quinone (6PPDQ) is an emerging tire-derived contaminant that poses a critical environmental risk to select salmonids. However, the mechanisms of 6PPDQ toxicity are currently unresolved. While species-specific metabolomic effects of 6PPDQ exposure have been explored, to our knowledge no studies have investigated the <i>in situ</i> spatial distribution of 6PPDQ and 6PPDQ biotransformation products in salmonids. Herein, we employ nanospray desorption electrospray ionization (nano-DESI) mass spectrometry imaging (MSI) to visualize 6PPDQ metabolism in 6-week posthatch rainbow trout fry exposed to 0.61 μg/L of 6PPDQ for 96 h. These data provide the first spatial mapping of 6PPDQ metabolism in fishes. 6PPDQ was not observed in any fish tissues; however, primary 6PPDQ biotransformation products, hydroxylated 6PPDQ and dihydroxylated 6PPDQ, were found to localize in the liver and gut of exposed fry. Additionally, interrogation of nontargeted nano-DESI spatial metabolomics revealed an accumulation of free fatty acids in the central nervous system of exposed fry. Overall, this study uncovers the spatially resolved 6PPDQ metabolism in exposed fishes and explores the disparate localization of endogenous metabolites disrupted by 6PPDQ exposure.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 8","pages":"937–944"},"PeriodicalIF":8.8,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144813444","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}

{"title":"Powering the Future: Policies to Advance Equitable Clean Cooking Access for Health, Well-Being, and Climate","authors":"Annelise Gill-Wiehl,&nbsp;Ajay Pillarisetti,&nbsp;Laura H Kwong,&nbsp;Misbath Daouda,&nbsp;Daniel M Kammen and Thomas Clasen*,&nbsp;","doi":"10.1021/acs.estlett.5c00567","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00567","url":null,"abstract":"<p >The use of liquefied petroleum gas (LPG), a World Health Organization-designated “clean” fuel, dominates household fuel expansion in low- and middle-income countries and is the most widely studied clean fuel in terms of health, climate, gender, equity, and preference considerations. We review the current state of evidence on all clean fuels and argue that knowledge gaps create uncertainty that impedes action on cooking energy alternatives and encourages reliance on markets rather than policy-driven transitions. There is currently not enough evidence that any single fuel is a silver bullet for protecting health and environment. Further research into electric cooking could support a comprehensive household and community energy transition beyond cooking. We propose a set of policies that multilateral agencies, governments, funders, researchers, and nongovernmental organizations can pursue to assess how renewable energy should complement LPG in expanding energy access. This agenda is intended to help ensure a clean, healthful, equitable, and sustainable energy future for all.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 8","pages":"893–900"},"PeriodicalIF":8.8,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acs.estlett.5c00567","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144813780","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":"A Novel, Metal-Based Approach to Identify Residences with Lead Service Lines","authors":"Danielle Land*,&nbsp;Grant D. Brown,&nbsp;David M. Cwiertny,&nbsp;Marc A. Edwards,&nbsp;Mona Hanna,&nbsp;Drew E. Latta and Michelle M. Scherer,&nbsp;","doi":"10.1021/acs.estlett.5c00552","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00552","url":null,"abstract":"<p >There is an urgent need for rapid, cost-effective approaches to identify residences with lead service lines (LSLs). We evaluated whether analyzing water for corrosion-related metals could accurately identify residences with LSLs without relying on potentially inaccurate property records. We applied principal component analysis logistic regression (PCA-LR) and classification tree models using 28 analytes per bottle (including Pb, Cu, Zn, Fe, Al, and others) measured in 216 water samples collected in Flint, Michigan, in August 2015. The PCA-LR model achieved 87% accuracy (AUROC = 0.93) with 81% sensitivity and 90% specificity, while the classification tree model achieved 80% accuracy (AUROC = 0.77) with 74% sensitivity and 84% specificity. The classification tree provided interpretable decision rules identifying key predictive metals, primarily relying on 1 min flush Pb concentrations with Zn and Al as secondary predictors. It also revealed distinct metal co-occurrence patterns between LSLs and premise plumbing, offering insights into Pb source identification. The tree’s interpretable structure makes it particularly valuable for practical implementation by utilities. Although additional work is needed to extend these models to other water systems, our results suggest that metal analysis provides an accurate, cost-effective, and minimally invasive tool that complements existing approaches for predicting the presence of an LSL.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 8","pages":"918–923"},"PeriodicalIF":8.8,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acs.estlett.5c00552","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144813470","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":"Turning the Corner on Hazardous Tire Compounds: A Management Framework for Tire Additive Pollution","authors":"Timothy F. M. Rodgers*,&nbsp;Simon Drew,&nbsp;Tanya Brown,&nbsp;Kyoshiro Hiki,&nbsp;Yamamoto Hiroshi,&nbsp;Mason King,&nbsp;Edward P. Kolodziej,&nbsp;Erik T. Krogh,&nbsp;Jenifer K. McIntyre,&nbsp;Kyle Miller,&nbsp;Hui Peng,&nbsp;Haley Tomlin,&nbsp;Yan Wang and Rachel C. Scholes,&nbsp;","doi":"10.1021/acs.estlett.5c00453","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00453","url":null,"abstract":"<p >Vehicle tires are complex chemical formulations that abrade during use, releasing tire particles everywhere roadways exist. The recent discovery that the tire additive transformation product 6PPD-quinone (N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine-quinone) was primarily responsible for mortality in sentinel fish species has prompted regulatory and scientific scrutiny of tire additives as contaminants subject to widespread human and ecological exposure. Tire additives pose a global pollution challenge to human and ecosystem health due to their high emissions via tire wear particles combined with loss from in-use and waste tire materials. Such releases often occur in close proximity to humans, and mobilized material or chemicals are easily transported to habitats where adverse effects are possible. This issue demands a commensurate policy response that remains unaddressed by existing pollution management policies. We here propose five principles for managing tire additives: mandating nonhazardous alternatives and their transformation products, acknowledging impacts throughout tire life cycles, transparency in tire compositions, characterizing effects, and international harmonization. Following these principles, we outline a <i>Management Framework for Tire Additive Pollution</i> (MF-TAP) that recommends a phased regulatory approach, data transparency, independent expert panels, and internationally coordinated governance to drive the development and use of alternative, nonhazardous tire additive compounds. Managing tire additives according to the MF-TAP will allow us to better address the pollution potential of hazardous tire additives and reduce their impacts on human health and ecosystems.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 8","pages":"869–880"},"PeriodicalIF":8.8,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acs.estlett.5c00453","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144813768","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}