Environmental Science & Technology Letters Environ.最新文献

{"title":"Stable Carbon and Sulfur Isotopic Compositions of Per- and Polyfluoroalkyl Substances","authors":"Allison Dombrowski,&nbsp;Paul K. Wojtal,&nbsp;Hai Pan,&nbsp;Chad S. Lane and Ralph N. Mead*,&nbsp;","doi":"10.1021/acs.estlett.5c0002110.1021/acs.estlett.5c00021","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00021https://doi.org/10.1021/acs.estlett.5c00021","url":null,"abstract":"<p >Prolific use, mobility, and chemical stability make assessing the fate and transport of per- and polyfluoroalkyl substances (PFAS) particularly complex. New analytical techniques will be required to distinguish between PFAS of different origins and to trace their transport through natural systems. This study assesses the stable carbon (δ¹³C) and sulfur (δ³⁴S) isotopic signatures of PFAS from different sources. Bulk elemental analyzer-isotope ratio mass spectrometry and compound-specific gas chromatograph-isotope ratio mass spectrometry (GC-IRMS) analytical methods were used to measure the δ¹³C and δ³⁴S values of multiple PFAS compounds from various vendors and production lot numbers. PFAS originating from different vendors with different lot numbers and different PFAS species showed distinct δ¹³C isotopic values over a wide range of δ¹³C values (−52.8‰ to −26.9‰). Results indicate that GC-IRMS techniques could be utilized to determine the δ¹³C composition of PFAS present at concentrations typical of environmental samples. Coupling stable isotopic data with co-contaminant or isomer data could help to further differentiate PFAS sources. The development of new environmental forensics tools such as these will be necessary to elucidate the PFAS source and transport in natural systems and may inform remediation and pollution prevention protocols for PFAS.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 2","pages":"216–221 216–221"},"PeriodicalIF":8.9,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143376146","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":"Controllable Regulation of Emissive Excimers with Alkyl Chains for Highly Sensitive Perchlorate Analysis","authors":"Yuan-Jun Tong,&nbsp;Shiyu Peng,&nbsp;Qiang-Sheng Zhang,&nbsp;Qian Liu,&nbsp;Kexuan Li,&nbsp;Lu-Dan Yu,&nbsp;Xinying Gong,&nbsp;Dongmei Wang and Zhengjun Gong*,&nbsp;","doi":"10.1021/acs.estlett.4c0102410.1021/acs.estlett.4c01024","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c01024https://doi.org/10.1021/acs.estlett.4c01024","url":null,"abstract":"<p >Performing fast and accurate analysis of perchlorate in the environment is crucial for environmental and public safety. In this work, a novel strategy for modifying 4,4′-(3′,4′,5′,6′-tetrakis(4-(pyridin-4-yl)phenyl)-[1,1′:2′,1″-terpheny]-4,4″-diyl)dipyridine (TPD) with varied alkyl chains to realize bright monomer and excimer emissions simultaneously and fine-tune their emission properties was proposed. The excimer emission was thoroughly characterized via regulating the concentration of the luminophore and the length of the alkyl chain. It was found that the monomer emission and excimer emission could be optionally designed via regulating alkyl chains. Benefiting from the excellent dual-mode emission characteristics, the hypersensitive and ultraselective analysis of perchlorate (ClO₄^–) in real water samples was performed due to the strong electrostatic interaction between ClO₄^– and luminophore triggered excimer emission. The limit of detection was down to 21 ng·g^–1, which was a magnitude below the limit in drinking water set by the United States Environmental Protection Agency (60 ng·g^–1). Practical application showed the concentrations of ClO₄^– in construction wastewater samples were four-folds higher than the local river water. As a result, it is necessary to take control measures for ClO₄^– in construction wastewater. This study presents a reliable and convenient method for creating fluorescent probes toward target applications.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 4","pages":"371–376 371–376"},"PeriodicalIF":8.9,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143790338","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":"Exploring Variations in Properties of Lead Pipe Scales from Different Drinking Water Systems","authors":"Yao Ma,&nbsp;Zehua Wang and Daniel E. Giammar*,&nbsp;","doi":"10.1021/acs.estlett.4c0095110.1021/acs.estlett.4c00951","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00951https://doi.org/10.1021/acs.estlett.4c00951","url":null,"abstract":"<p >The corrosion products formed in lead water pipes exert strong control over lead concentrations in tap water. Compositions of pipe scales from different drinking water distribution systems vary in appearance, crystalline phases present, and elemental concentrations. This study is based on 76 harvested pipes from 17 different systems across the United States together with data from previously published research. Factors impacting lead pipe scale composition are identified. The characterization data are compared with chemical equilibrium predictions. The specific crystalline lead carbonate solid present depends on the pH and dissolved inorganic carbon (DIC) concentration. Systems with only hydrocerussite [Pb₃(CO₃)₂(OH)₂] tend to have a higher pH (8.5 ± 0.8) and a lower DIC (1.3 ± 0.6 mM) compared to those of systems with only cerussite (PbCO₃) (pH 7.5 ± 0.2 and DIC of 5.5 ± 1.3). While lead(IV) oxide solids are predicted in all free chlorine systems, they were observed in only 43% of them. Lead phosphate solids are more commonly found in systems using orthophosphate at the highest concentrations. Amorphous materials are present as components of many pipe scales, and these amorphous materials are often rich in aluminum. Equilibrium predictions for lead carbonate, lead(IV) oxide solids, and lead phosphate correspond to the observed presence of these solids with accuracies of 95%, 43%, and 73%, respectively.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 2","pages":"196–202 196–202"},"PeriodicalIF":8.9,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143376124","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":"Magnesite-Assisted Electrochemical System for Enhanced Nutrient Recovery: Comparative Evaluation in a Wastewater Co-Treatment Scheme","authors":"Zhengshuo Zhan,&nbsp;Jiayu Luo,&nbsp;Jun-qi Wang,&nbsp;Chongxuan Liu and Yang Lei*,&nbsp;","doi":"10.1021/acs.estlett.4c0080810.1021/acs.estlett.4c00808","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00808https://doi.org/10.1021/acs.estlett.4c00808","url":null,"abstract":"<p >Recovering nitrogen (N) and phosphorus (P) from wastewater is crucial for environmental protection and resource sustainability. Chemical precipitation and Mg electrocoagulation, although often studied and applied for N and P recovery as struvite, suffer from inherent drawbacks. The former generates poorly settling sludge and re-releases natural organic matter, while the latter encounters issues such as active anode passivation and complex struvite deposition. We propose and validate a new magnesite-assisted electrochemical system that achieved 100.0% NH₄⁺ and 66.9% PO₄^3– removal in easily recoverable struvite without suffering from anode passivation. The system’s core lies in the <i>in situ</i> utilization of the local low-pH environment established via water electrolysis by the anode-packed magnesite minerals, providing an affordable, passivation-free, and tunable Mg source. Meanwhile, the cathode emerges in a local high-pH atmosphere, serving as the sole site for high-purity and condensed struvite precipitation and collection. On top of technological development, we validate a co-treatment concept for the recovery of struvite from mixed wastewater, demonstrating potential cost savings of 76.9% and a 22.4% reduction in CO₂ emissions. Our work offers a new design for enhanced struvite recovery and outlines a green route for co-managing different waste streams and producing valuable products.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 2","pages":"222–229 222–229"},"PeriodicalIF":8.9,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143376119","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":"PubChemLite Plus Collision Cross Section (CCS) Values for Enhanced Interpretation of Nontarget Environmental Data","authors":"Anjana Elapavalore,&nbsp;Dylan H. Ross,&nbsp;Valentin Grouès,&nbsp;Dagny Aurich,&nbsp;Allison M. Krinsky,&nbsp;Sunghwan Kim,&nbsp;Paul A. Thiessen,&nbsp;Jian Zhang,&nbsp;James N. Dodds,&nbsp;Erin S. Baker,&nbsp;Evan E. Bolton*,&nbsp;Libin Xu* and Emma L. Schymanski*,&nbsp;","doi":"10.1021/acs.estlett.4c0100310.1021/acs.estlett.4c01003","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c01003https://doi.org/10.1021/acs.estlett.4c01003","url":null,"abstract":"<p >Finding relevant chemicals in the vast (known) chemical space is a major challenge for environmental and exposomics studies leveraging nontarget high resolution mass spectrometry (NT-HRMS) methods. Chemical databases now contain hundreds of millions of chemicals, yet many are not relevant. This article details an extensive collaborative, open science effort to provide a dynamic collection of chemicals for environmental, metabolomics, and exposomics research, along with supporting information about their relevance to assist researchers in the interpretation of candidate hits. The PubChemLite for Exposomics collection is compiled from ten annotation categories within PubChem, enhanced with patent, literature and annotation counts, predicted partition coefficient (logP) values, as well as predicted collision cross section (CCS) values using CCSbase. Monthly versions are archived on Zenodo under a CC-BY license, supporting reproducible research, and a new interface has been developed, including historical trends of patent and literature data, for researchers to browse the collection. This article details how PubChemLite can support researchers in environmental and exposomics studies, describes efforts to increase the availability of experimental CCS values, and explores known limitations and potential for future developments. The data and code behind these efforts are openly available. PubChemLite can be browsed at https://pubchemlite.lcsb.uni.lu.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 2","pages":"166–174 166–174"},"PeriodicalIF":8.9,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.estlett.4c01003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143375973","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":"PubChemLite Plus Collision Cross Section (CCS) Values for Enhanced Interpretation of Nontarget Environmental Data.","authors":"Anjana Elapavalore, Dylan H Ross, Valentin Grouès, Dagny Aurich, Allison M Krinsky, Sunghwan Kim, Paul A Thiessen, Jian Zhang, James N Dodds, Erin S Baker, Evan E Bolton, Libin Xu, Emma L Schymanski","doi":"10.1021/acs.estlett.4c01003","DOIUrl":"10.1021/acs.estlett.4c01003","url":null,"abstract":"<p><p>Finding relevant chemicals in the vast (known) chemical space is a major challenge for environmental and exposomics studies leveraging nontarget high resolution mass spectrometry (NT-HRMS) methods. Chemical databases now contain hundreds of millions of chemicals, yet many are not relevant. This article details an extensive collaborative, open science effort to provide a dynamic collection of chemicals for environmental, metabolomics, and exposomics research, along with supporting information about their relevance to assist researchers in the interpretation of candidate hits. The PubChemLite for Exposomics collection is compiled from ten annotation categories within PubChem, enhanced with patent, literature and annotation counts, predicted partition coefficient (logP) values, as well as predicted collision cross section (CCS) values using CCSbase. Monthly versions are archived on Zenodo under a CC-BY license, supporting reproducible research, and a new interface has been developed, including historical trends of patent and literature data, for researchers to browse the collection. This article details how PubChemLite can support researchers in environmental and exposomics studies, describes efforts to increase the availability of experimental CCS values, and explores known limitations and potential for future developments. The data and code behind these efforts are openly available. PubChemLite can be browsed at https://pubchemlite.lcsb.uni.lu.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 2","pages":"166-174"},"PeriodicalIF":8.9,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11823450/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431957","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":"Filling the Gaps in PFAS Detection: Integrating GC-MS Non-Targeted Analysis for Comprehensive Environmental Monitoring and Exposure Assessment","authors":"Seth R. Newton*,&nbsp;John A. Bowden,&nbsp;Nathaniel Charest,&nbsp;Stephen R. Jackson,&nbsp;Jeremy P. Koelmel,&nbsp;Hannah K. Liberatore,&nbsp;Ashley M. Lin,&nbsp;Charles N. Lowe,&nbsp;Sofia Nieto,&nbsp;Krystal J. Godri Pollitt,&nbsp;Anna R. Robuck,&nbsp;Pawel Rostkowski,&nbsp;Timothy G. Townsend,&nbsp;M. Ariel Geer Wallace and Antony John Williams,&nbsp;","doi":"10.1021/acs.estlett.4c0093010.1021/acs.estlett.4c00930","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00930https://doi.org/10.1021/acs.estlett.4c00930","url":null,"abstract":"<p >Per- and polyfluoroalkyl substances (PFAS) have garnered increasing attention in recent years, and non-targeted analysis (NTA) has become essential for elucidating novel PFAS structures. NTA and PFAS research have been dominated by liquid chromatography–mass spectrometry (LC-MS) with gas chromatography–mass spectrometry (GC-MS) used less often as evidenced by bibliometrics. However, the performance of GC-MS in NTA studies (GC-NTA) rivals that of LC-ESI-MS, and GC-MS is shown to cover a complementary chemical space. An LC-ESI-MS amenability model applied to a list of approximately 12,000 PFAS revealed that less than 10% of known PFAS chemistry is predicted to be amenable to typical LC-MS analysis. Therefore, there is strong potential for applying GC-MS methods to more fully assess the PFAS environmental contamination landscape, uniquely shedding light on both known and novel PFAS, especially within the chemical space realm of volatile and semivolatile PFAS. Waste streams from fluorochemical manufacturing facilities have been heavily studied using LC-MS and targeted GC-MS; however, GC-NTA is needed to discover novel PFAS that are not amenable to LC-MS emitted from facilities. Studies on the incineration of PFAS-containing materials, such as aqueous film forming foam, have focused on the destruction of parent compounds, and little is known about the transformation products formed during such processes. GC-NTA holds the potential to elucidate transformation products formed when PFAS are incinerated. Wastewater treatment plants and landfills are known sources of PFAS to the environment, yet GC-NTA is needed to understand air emissions of PFAS and PFAS transformation products from these sources. Consumer products are known to lead to indoor exposures to PFAS via emissions to air and dust, but research in this area has either used LC-MS or targeted GC-MS. Despite the challenges with advancing GC-NTA, we call on NTA researchers, grantors, managers, and other stakeholders to recognize the potential and necessity of GC-NTA in PFAS research so that we may face these challenges together.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 2","pages":"104–112 104–112"},"PeriodicalIF":8.9,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143376355","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":"Methylene Blue Is a Widely Used Antifungal Agent That Confounds Behavioral Toxicity Assays in Larval Zebrafish","authors":"Niepukolie Nipu,&nbsp;Lai Wei,&nbsp;Jith Thomas and Jan A. Mennigen*,&nbsp;","doi":"10.1021/acs.estlett.4c0095510.1021/acs.estlett.4c00955","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00955https://doi.org/10.1021/acs.estlett.4c00955","url":null,"abstract":"<p >Zebrafish are widely used as model organisms in biological research with embryos typically reared in media supplemented with methylene blue (MB) as an antifungal agent. Many animal care guidelines recommend the use of MB during early development stages. However, this practice overlooks MB’s known effects as a monoamine oxidase inhibitor and antidepressant. This study demonstrates that at recommended husbandry concentrations, MB significantly reduces zebrafish locomotion in a 24 h behavior assay, a finding consistent across strains and laboratories. Gene expression profiling and pharmacological experiments using the MAO-inhibitor deprenyl suggest that MB induces hypolocomotion by increasing the serotonergic tone. Importantly, MB use in standard embryo medium masks known hypolocomotor responses to fluoxetine, a common aquatic contaminant and selective serotonin-reuptake inhibitor. These findings have significant implications for the increasing use of larval zebrafish in high-throughput neurotoxicity assessments and highlight the need to reconsider the use of MB in zebrafish research. The study emphasizes the importance of eliminating potential confounds in husbandry practices and improving experimental protocol reporting to enhance reproducibility in zebrafish-based (eco)toxicity testing.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 2","pages":"130–136 130–136"},"PeriodicalIF":8.9,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143376291","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":"Quality of Wastewater from Lithium-Brine Mining","authors":"Gordon D. Z. Williams,&nbsp; and ,&nbsp;Avner Vengosh*,&nbsp;","doi":"10.1021/acs.estlett.4c0112410.1021/acs.estlett.4c01124","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c01124https://doi.org/10.1021/acs.estlett.4c01124","url":null,"abstract":"<p >The sustainability of lithium mining is one of the critical factors for a successful transition to renewable energy. A potential practice to alleviate brine level decline and loss of adjacent fresh groundwater from brine pumping in the salt pans (salars) is through injection of spent brines into the subsurface. The quality and possible impacts of injecting spent brines have not been fully investigated. Here we present data for major and trace elements in natural brines, brines and salts from evaporation ponds, and wastewaters from a lithium processing plant at the Salar de Uyuni in Bolivia, the largest known global lithium deposit. The investigation reveals that evaporation of natural brines results in highly saline brines (TDS ≈ 360 g/kg) with low pH (3.2) and elevated concentrations of lithium, boron, and arsenic (up to ∼50 mg/kg) that could modify the chemical composition and mineral saturation upon release to the environment. The extremely high arsenic concenrations and low pH also have potential environmental impacts. In contrast, the processing plant generates saline and low-saline wastewater streams with high pH (∼10) and lower solute concentrations that could dilute the natural lithium reservoir, while the high pH limits their disposal options.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 2","pages":"151–157 151–157"},"PeriodicalIF":8.9,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143376268","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":"Bacterial Production Modulates the Persistence of Organophosphate Ester Flame Retardants and Plasticizers in the Ocean","authors":"Jon Iriarte,&nbsp;Núria Trilla-Prieto,&nbsp;Naiara Berrojalbiz,&nbsp;Maria Vila-Costa* and Jordi Dachs,&nbsp;","doi":"10.1021/acs.estlett.4c0112810.1021/acs.estlett.4c01128","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c01128https://doi.org/10.1021/acs.estlett.4c01128","url":null,"abstract":"<p >Understanding the biodegradation of organic pollutants is crucial for assessing the persistence and fate of these contaminants and improve their risk assessment, eventually drawing policy. The occurrence of organophosphate ester (OPE) flame retardants and plasticizers has been widely reported in the marine environment. However, few studies have assessed the potential of marine microorganisms to degrade them, particularly under oceanic conditions. Here, we report the results of six degradation experiments where in situ bacterial communities were challenged with environmentally relevant concentrations of OPEs in the Atlantic and Southern Oceans. Hydrophobic aryl-OPEs significantly decreased by 60% and 25% in the Atlantic and Southern Oceans, respectively. In Atlantic waters, up to 40% of OPE depletion was due to sorption to cells and close to 20% to biodegradation. The cold temperatures of the Southern Ocean resulted in a slower, nondetectable biodegradation, further confirmed by bacterial production results. Bacterial composition exposed to OPEs also showed a larger degree of changes in the Atlantic than in the Southern Ocean. Significant negative correlations were found between the fold changes in bacterial production and the decreases in OPE concentrations, suggesting that bacterial carbon demand is directly related to OPE biodegradation in the oceans.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 2","pages":"158–165 158–165"},"PeriodicalIF":8.9,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143376177","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}